Xen in Linux 3.x (or PVOPS)
•
2 likes•2,000 views
This talk explores what has gone in so far in the Linux kernel (version 3.0 and 3.1) and which Linux distributions are deliverinbg Xen again. The otalk explores outstanding challenges and the pieces that are missing and what we can do, and what we cannot do working with Linux.
Report
Share
Report
Share
Download to read offline
Recommended
PV-Drivers for SeaBIOS using Upstream Qemu
As part of the Google Summer of Code, we tried to add support for SeaBIOS in order to allow guest OSes to be booted directly from PV disk devices rather than from the emulated disk device. SeaBIOS is the BIOS implementation that upstream qemu uses. When the virtual machine is created, SeaBIOS upon initialization uses a generic Xenstore client to communicate with the back end and initialize the front-end block device that will connect to the back end. After the connection is established I/O requests are made via the BIOS int 0x13 interface, guest OSes use the int 0x13 without needing to be aware that PV drivers were used.
XPDS14: Removing the Xen Linux Upstream Delta of Various Linux Distros - Luis...
XPDS14: Removing the Xen Linux Upstream Delta of Various Linux Distros - Luis...The Linux Foundation
Xen is being used in production by many folks, but are they really using the upstream code? If not what are they using? At least SUSE's supported delta for the Linux kernel consists of 116 patches totaling 353,770 lines of code. Debian has 43 patches for a delta of about 1693 lines of code. What is this delta and how do we shrink it? I will give an overview of the supported Linux kernel delta for Xen at SUSE and Debian with upstream but also layout a proposed roadmap of addressing the delta in collaboration with different teams in the Xen community.Xenalyze: Finding meaning in the chaos
The Xen has a tracing infrastructure that can collect a large amount of very detailed data about what's happening at the hypervisor layer. But making sense out of that data isn't an easy thing to do. In this talk I give an overview of xenalyze, a powerful tool I've developed for finding meaning in the vast amounts of data generated by xentrace, enabling both debugging and performance analysis.
Kvm performance optimization for ubuntu
This document discusses various techniques for optimizing KVM performance on Linux systems. It covers CPU and memory optimization through techniques like vCPU pinning, NUMA affinity, transparent huge pages, KSM, and virtio_balloon. For networking, it discusses vhost-net, interrupt handling using MSI/MSI-X, and NAPI. It also covers block device optimization through I/O scheduling, cache mode, and asynchronous I/O. The goal is to provide guidance on configuring these techniques for workloads running in KVM virtual machines.
QEMU Disk IO Which performs Better: Native or threads?
Pradeep Kumar Surisetty from Red Hat presented a comparison of native and threaded I/O performance in QEMU disk I/O. He outlined KVM I/O architecture, storage transport options in KVM including virtio-blk configurations, and benchmark tools used. Performance testing was done with various disk types, file systems, images and configurations. Native generally outperformed threads for random I/O workloads, while threads sometimes showed better performance for sequential reads, especially with multiple VMs.
XPDS14: Xen 4.5 Roadmap - Konrad Wilk, Oracle
Konrad Wilk is a Software Development Manager at Oracle. His group’s mission is to make Linux and Xen Project virtualization better and faster. As part of this work, Konrad has been the maintainer of the Xen Project subsystem in Linux, Xen Project maintainer and now also Release Manager for the 4.5 release of the Xen Project Hypervisor. Konrad has been active in the Linux and Xen Project communities for more than 6 years and was instrumental in adding Xen Project support to the Linux Kernel.
XPDS14 - Intel(r) Virtualization Technology for Directed I/O (VT-d) Posted In...
XPDS14 - Intel(r) Virtualization Technology for Directed I/O (VT-d) Posted In...The Linux Foundation
With the development of virtualization, there are more device assignment requirements. Based on VT-d interrupt remapping, Intel introduces VT-d interrupt posting as a more enhanced method to handle interrupts in the virtualization environment. The Posted Interrupts (PI) on CPU side has been already supported in Intel CPUs, with VT-d Posted Interrupt we can get some additional advantages, it can directly deliver external interrupts to running vCPUs without hypervisor involvement, decease the interrupt migration complexity, differentiate between urgent and non-urgent external interrupt, and avoid consuming host-vector for each interrupt to vCPU. In this presentation, Feng will talk about the mechanism of VT-d PI and its advantages, as well as some performance data of I/O intensive workload in Xen, which will show the performance gain after using VT-d PI.XPDS14 - Xen as High-Performance NFV Platform - Jun Nakajima, Intel
We are building a high-performance NFV (Network Functions Virtualization) platform using Xen. Unlike the conventional use cases of Xen-based systems, such as data center or public cloud, NFV platforms require low-latency and high-bandwidth I/O for virtual middleboxes to handle small packets efficiently. It is challenging to meet such requirements in virtualization environments because of additional virtualization overhead.
We'll discuss a couple of solutions for high-performance packet forwarding, including SR-IOV VF (Virtual Function), shared-memory channels for VM-to-VM communication, resolving the major bottlenecks and latency/realtime issues, taking advantage of the Xen's architecture. We also discuss how the modern hardware-based virtualization features, such as Posted Interrupts, are helpful. Finally we share the best practices when achieving such high-performance systems.
"We are building a high-performance NFV (Network Functions Virtualization) platform using Xen. Unlike the conventional use cases of Xen-based systems, such as data center or public cloud, NFV platforms require low-latency and high-bandwidth I/O for virtual middleboxes to handle small packets efficiently. It is challenging to meet such requirements in virtualization environments because of additional virtualization overhead.
We'll discuss a couple of solutions for high-performance packet forwarding, including SR-IOV VF (Virtual Function), shared-memory channels for VM-to-VM communication, resolving the major bottlenecks and latency/realtime issues, taking advantage of the Xen's architecture. We also discuss how the modern hardware-based virtualization features, such as Posted Interrupts, are helpful. Finally we share the best practices when achieving such high-performance systems.
Recommended
PV-Drivers for SeaBIOS using Upstream Qemu
As part of the Google Summer of Code, we tried to add support for SeaBIOS in order to allow guest OSes to be booted directly from PV disk devices rather than from the emulated disk device. SeaBIOS is the BIOS implementation that upstream qemu uses. When the virtual machine is created, SeaBIOS upon initialization uses a generic Xenstore client to communicate with the back end and initialize the front-end block device that will connect to the back end. After the connection is established I/O requests are made via the BIOS int 0x13 interface, guest OSes use the int 0x13 without needing to be aware that PV drivers were used.
XPDS14: Removing the Xen Linux Upstream Delta of Various Linux Distros - Luis...
XPDS14: Removing the Xen Linux Upstream Delta of Various Linux Distros - Luis...The Linux Foundation
Xen is being used in production by many folks, but are they really using the upstream code? If not what are they using? At least SUSE's supported delta for the Linux kernel consists of 116 patches totaling 353,770 lines of code. Debian has 43 patches for a delta of about 1693 lines of code. What is this delta and how do we shrink it? I will give an overview of the supported Linux kernel delta for Xen at SUSE and Debian with upstream but also layout a proposed roadmap of addressing the delta in collaboration with different teams in the Xen community.Xenalyze: Finding meaning in the chaos
The Xen has a tracing infrastructure that can collect a large amount of very detailed data about what's happening at the hypervisor layer. But making sense out of that data isn't an easy thing to do. In this talk I give an overview of xenalyze, a powerful tool I've developed for finding meaning in the vast amounts of data generated by xentrace, enabling both debugging and performance analysis.
Kvm performance optimization for ubuntu
This document discusses various techniques for optimizing KVM performance on Linux systems. It covers CPU and memory optimization through techniques like vCPU pinning, NUMA affinity, transparent huge pages, KSM, and virtio_balloon. For networking, it discusses vhost-net, interrupt handling using MSI/MSI-X, and NAPI. It also covers block device optimization through I/O scheduling, cache mode, and asynchronous I/O. The goal is to provide guidance on configuring these techniques for workloads running in KVM virtual machines.
QEMU Disk IO Which performs Better: Native or threads?
Pradeep Kumar Surisetty from Red Hat presented a comparison of native and threaded I/O performance in QEMU disk I/O. He outlined KVM I/O architecture, storage transport options in KVM including virtio-blk configurations, and benchmark tools used. Performance testing was done with various disk types, file systems, images and configurations. Native generally outperformed threads for random I/O workloads, while threads sometimes showed better performance for sequential reads, especially with multiple VMs.
XPDS14: Xen 4.5 Roadmap - Konrad Wilk, Oracle
Konrad Wilk is a Software Development Manager at Oracle. His group’s mission is to make Linux and Xen Project virtualization better and faster. As part of this work, Konrad has been the maintainer of the Xen Project subsystem in Linux, Xen Project maintainer and now also Release Manager for the 4.5 release of the Xen Project Hypervisor. Konrad has been active in the Linux and Xen Project communities for more than 6 years and was instrumental in adding Xen Project support to the Linux Kernel.
XPDS14 - Intel(r) Virtualization Technology for Directed I/O (VT-d) Posted In...
XPDS14 - Intel(r) Virtualization Technology for Directed I/O (VT-d) Posted In...The Linux Foundation
With the development of virtualization, there are more device assignment requirements. Based on VT-d interrupt remapping, Intel introduces VT-d interrupt posting as a more enhanced method to handle interrupts in the virtualization environment. The Posted Interrupts (PI) on CPU side has been already supported in Intel CPUs, with VT-d Posted Interrupt we can get some additional advantages, it can directly deliver external interrupts to running vCPUs without hypervisor involvement, decease the interrupt migration complexity, differentiate between urgent and non-urgent external interrupt, and avoid consuming host-vector for each interrupt to vCPU. In this presentation, Feng will talk about the mechanism of VT-d PI and its advantages, as well as some performance data of I/O intensive workload in Xen, which will show the performance gain after using VT-d PI.XPDS14 - Xen as High-Performance NFV Platform - Jun Nakajima, Intel
We are building a high-performance NFV (Network Functions Virtualization) platform using Xen. Unlike the conventional use cases of Xen-based systems, such as data center or public cloud, NFV platforms require low-latency and high-bandwidth I/O for virtual middleboxes to handle small packets efficiently. It is challenging to meet such requirements in virtualization environments because of additional virtualization overhead.
We'll discuss a couple of solutions for high-performance packet forwarding, including SR-IOV VF (Virtual Function), shared-memory channels for VM-to-VM communication, resolving the major bottlenecks and latency/realtime issues, taking advantage of the Xen's architecture. We also discuss how the modern hardware-based virtualization features, such as Posted Interrupts, are helpful. Finally we share the best practices when achieving such high-performance systems.
"We are building a high-performance NFV (Network Functions Virtualization) platform using Xen. Unlike the conventional use cases of Xen-based systems, such as data center or public cloud, NFV platforms require low-latency and high-bandwidth I/O for virtual middleboxes to handle small packets efficiently. It is challenging to meet such requirements in virtualization environments because of additional virtualization overhead.
We'll discuss a couple of solutions for high-performance packet forwarding, including SR-IOV VF (Virtual Function), shared-memory channels for VM-to-VM communication, resolving the major bottlenecks and latency/realtime issues, taking advantage of the Xen's architecture. We also discuss how the modern hardware-based virtualization features, such as Posted Interrupts, are helpful. Finally we share the best practices when achieving such high-performance systems.
XPDDS17: Keynote: Xen 4.8 at Gandi - Vincent Legout, Gandi
Vincent Legout presented on Gandi's experience upgrading from Xen 4.1 to Xen 4.8. Gandi virtualizes approximately 10,000 VMs using Xen and upgraded to take advantage of new features in 4.8 like live patching. The upgrade process involved building new tools to convert VM formats and live migrate VMs between hypervisors. While some issues occurred with disk corruptions and crashes, overall Gandi has been satisfied with Xen 4.8, especially its security support and new live migration capabilities.
PVH : PV Guest in HVM container
PVH allows a paravirtualized Linux guest to run in ring 0 by using a hardware-assisted virtualization technique called PVH. PVH combines aspects of para-virtualization (PV) and hardware virtualization (HVM) by using a PV entry point to boot the guest faster while still allowing the guest kernel to run in ring 0. Performance benchmarks show that PVH provides significant performance improvements over traditional PV guests, bringing performance closer to HVM while still maintaining the security model of PV. However, some optimizations remain to be done to match the performance of pure PV or HVM guests.
The sexy world of Linux kernel pvops project
The document discusses paravirtualized operations (pv-ops) in the Linux kernel which allows it to detect if it is running under virtualization like Xen or KVM and use optimized operations. Pv-ops was successful and mainly involved bug fixes recently. Most Xen kernel development is in subsystems and amounts to over 50,000 lines of code added per release. Future work includes optimizations to blkback and netback drivers to improve I/O performance, as well as adding perf support and developing a hybrid PV/HVM domain 0 capability. The presenter takes questions at the end.
kdump: usage and_internals
Kdump is a long existing method for acquiring dump of crashed kernel, however very few literatures are available to understand it's usage and internals. We receive a lot of queries on kexec mailing list about different issues related to the kexec/kdump environment.
In this presentation, we talk about basics of kdump usage and some internals about kdump/kexec kernel implementation. It includes end to end flow from kdump kernel configuration to crash analysis. We discuss some of the problem which is frequently faced by kdump users. It also includes related information about ELF structure, so that one can debug if vmcore itself gets corrupted because of any architecture related issue.
LF Collaboration Summit: Xen Project 4 4 Features and Futures
Xen Project 4.4 Release Information.
Delivered by Russell Pavlicek at Linux Foundation Collaborative Summit on March 27, 2014.
Updated for LinuxCon/CloudOpen North America in August 2014.
XPDS13: HVM Dom0 - Any unmodified OS as Dom0 - Will Auld, Intel
This document discusses using an unmodified operating system as a domain 0 (dom0) in a hypervisor-virtualized (HVM) environment rather than the traditional para-virtualized (PV) dom0. It outlines the limitations of PV dom0 and how new CPU virtualization technologies enable using HVM dom0 to support any unmodified guest OS, improve performance, and reduce maintenance efforts. The document calls for porting Xen userland tools to Windows and enabling PV drivers to support Windows as an HVM dom0. This would expand Xen's usage models to include new client and trusted execution scenarios.
XPDS16: Xen Development Update
The talk is a status report for the latest release and development projects. It will cover the new features and important bug fixes (if any) in 4.7. It will also provide insight on what’s in the queue for the next major release. Retrospective on the release process will also be part of talk.
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...The Linux Foundation
Recent years have seen an increasing demand for supporting real-time systems in virtualized environments. To combine real-time and virtualization, a real-time scheduler at the hypervisor level is needed to provide timing guarantees to the guest virtual machines. RT-Xen provides a suite of multi-core real-time schedulers to deliver real-time performance to domains running on the Xen hypervisor. Work is underway to incorporate RT-Xen in the Xen distribution to replace the legacy SEDF scheduler. We have implemented and empirically compared a diverse set of multicore real-time scheduling policies within the RT-Xen scheduling framework. Based on extensive experiments of different scheduling policies, we plan to submit a patch on global EDF scheduler to the xen-devel as the first step to incorporate multicore real-time scheduling support within the Xen hypervisor.XPDS16: libvirt and Tools: What's New and What's Next - James Fehlig, SUSE
A year has passed since the last Xen Developer Summit and it is time to announce the quiet progress made on the libvirt libxl driver and related tooling. New features include memory, cpu, block device, and network interface statistics reporting, support for pvUSB, support for migration stream V2, peer-to-peer migration, UEFI for HVM guests via OVMF, and domain capabilities reporting to name a few. There are also many noteworthy improvements such as better conversion of xl.cfg to/from libvirt domXML, allowing users to easily switch between the xl+libxl and libvirt+libxl toolstacks.
The summit also provides an opportunity to discuss new proposals such as better control of domain placement on NUMA systems, exposing Xen's cpu pool feature in libvirt, supporting non-volatile memory for UEFI variables, and improved capabilities reporting.
Much of libvirt's value for Xen is in the tools built upon it: virt-manager, virt-viewer, virt-install, virt-builder, kimchi, OpenStack nova, etc. These tools also deserve a quick status update as they relate to Xen.
The audience is encouraged to participate, e.g. by requesting a sorely missing feature, warning of an upcoming Xen change that may affect libvirt, or simply suggesting a change that makes virtualization management life a bit easier.
From printk to QEMU: Xen/Linux Kernel debugging
The document discusses various debugging techniques for the Linux kernel including printk, gdb, kgdb, QEMU, and kdump. It provides an overview of how to use each technique including setting up a serial console with printk, remotely debugging with gdb and kgdb, adding debugging modules to QEMU, and using kdump to collect crash dumps. The document emphasizes that printk is simple but limited while gdb and QEMU provide more advanced debugging capabilities and recommends selecting a technique based on the specific debugging needs.
Aplura virtualization slides
The document discusses open source virtualization and provides an overview of key concepts like hypervisors, virtual machine environments, and different virtualization techniques. It also shares a real world case study of how Aplura implemented Xen virtualization to consolidate servers and gain flexibility. Tips are provided around hardware requirements, disk imaging, and common troubleshooting issues.
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...The Linux Foundation
Since its inception, the Xen Orchestra project which uses AGPLv3, always had a philosophy to listen and engage the community. User feedback shaped our initial concept, which first targeted system administrators. Eventually, our users drove us to support cloud-scale deployments supporting up to 2000 VM's. Retaining simplicity in usage and installation, while evolving Xen Orchestra to cloud scale posed many challenges. This led us to build many new features such ACLs, self-service, live charts, config drive management, and more, forced us to constantly evolve our architecture. First we will show how user needs changed our architecture, and how we implemented challenging problems such as user permissions, ACLs, Containers in a virtualized infrastructure and self service. We will conclude with a short demo, what is next and a lessons learned.LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...
LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...The Linux Foundation
For many years, the Xen community has been delivering a solid virtualization platform for the enterprise. In support of the Xen community innovation effort, Oracle has been translating our enterprise experience with mission-critical workloads and large-scale infrastructure deployments into upstream contributions for the Linux and Xen efforts. In this session, you'll hear from a key Oracle expert, and community member, about Oracle contributions that focus on large-scale Xen deployments, networking, PV drivers, new PVH architecture, performance enhancements, dynamic memory usage with ‘tmem', and much more. This is your chance to get an under the hood view and see why the Xen architecture is the ideal choice for the enterprise.OWF: Xen - Open Source Hypervisor Designed for Clouds
It is no accident that Xen software powers some of the largest Clouds in existence. From its outset, the Xen Project was intended to enable what we now call Cloud Computing. This session will explore how the Xen Architecture addresses the needs of the Cloud in ways which facilitate security, throughput, and agility. It will also cover some of the hot new developments of the Xen Project.
Linaro connect : Introduction to Xen on ARM
- Xen can now run on ARM hardware thanks to its rearchitecting to exploit ARM hardware virtualization extensions and remove unnecessary code like QEMU and shadow pagetables.
- It supports booting Linux as the dom0 and domUs. PV interfaces are used for I/O and there is no need for multiple guest types.
- Current status supports booting on ARMv7 hardware and some features on ARMv8 64-bit. Future work includes more platform support, ACPI, and enabling full ARMv8 virtualization.
Improving the Performance of the qcow2 Format (KVM Forum 2017)
By Alberto García.
qcow2 is QEMU's native file format for storing disk images. One of its features is that it grows dynamically, so disk space is only allocated when the virtual machine needs to store data. This makes the format efficient in terms of space requirements, but has an impact on its I/O performance. This presentation will describe some of those performance problems and will discuss possible ways to address them. Some of them can be solved by simply adjusting configuration parameters, others require improving the qcow2 driver in QEMU, and others need extending the file format itself.
(c) KVM Forum 2017
October 25 - 27, 2017
Hilton Prague, Prague, Czech Republic
http://events.linuxfoundation.org/events/archive/2017/kvm-forum
Xen Community Update 2011
The document provides an update on the Xen community. It discusses welcoming a new community manager, development activity levels being high, the Xen 4.1 release featuring new capabilities, interactions with other communities like Linux and OpenStack, and secure isolation remaining a top priority through techniques like driver domains. It also proposes a reference architecture to help products better take advantage of Xen's security and reliability benefits through features like restartable driver domains.
BACD July 2012 : The Xen Cloud Platform
Updates on XCP, XCP 1.5 and 1.6 release schedule. New XCP features such as Storage Motaion and Disaggregation
Windsor: Domain 0 Disaggregation for XenServer and XCP
The document discusses the evolution of XenServer architecture to address scalability limitations. The current architecture works well now but will hit bottlenecks on larger servers. The new "Windsor" architecture uses domain 0 disaggregation to move virtualization functions out of domain 0 and into separate domains for improved performance, scalability, and isolation. Key benefits include better VM density, use of hardware resources, stability, availability, and extensibility. It provides a flexible platform that can scale-out across servers.
Skylark: Easy Cloud Computing
Skylark aims to provide a generic platform which enables cloud applications to be easily deployed and accessed.
In the front-end, Skylark ports Spice to Xen and customizes Spice for application window delivery and display. Skylark users can start any application subscribed from Skylark application store and does not need to know whether it runs in Linux or Windows.
In the back-end, by providing Xen Image File System (Xen-IFS), multiple VMs are allowed to start up simultaneously from the same snapshot or the same disk image. Xen-IFS will automatically keep and isolate the private data produced by each VM.
Skylark makes it possible for Multiple User Single Installation (MUSI) among VMs, and also makes it easy for application delivery through remote VM access.
Engaging the Xen Developer Comminity
This document discusses ways for hardware and software vendors to engage with the Xen developer community by contributing testing, reporting bugs, suggesting features, and submitting code patches. It outlines the benefits of contributing as well as practical guidelines for submitting high-quality bug reports, questions, and patches that are more likely to be accepted into the Xen codebase. The goal is to enable greater involvement from external organizations to help drive further development of the Xen hypervisor.
More Related Content
What's hot
XPDDS17: Keynote: Xen 4.8 at Gandi - Vincent Legout, Gandi
Vincent Legout presented on Gandi's experience upgrading from Xen 4.1 to Xen 4.8. Gandi virtualizes approximately 10,000 VMs using Xen and upgraded to take advantage of new features in 4.8 like live patching. The upgrade process involved building new tools to convert VM formats and live migrate VMs between hypervisors. While some issues occurred with disk corruptions and crashes, overall Gandi has been satisfied with Xen 4.8, especially its security support and new live migration capabilities.
PVH : PV Guest in HVM container
PVH allows a paravirtualized Linux guest to run in ring 0 by using a hardware-assisted virtualization technique called PVH. PVH combines aspects of para-virtualization (PV) and hardware virtualization (HVM) by using a PV entry point to boot the guest faster while still allowing the guest kernel to run in ring 0. Performance benchmarks show that PVH provides significant performance improvements over traditional PV guests, bringing performance closer to HVM while still maintaining the security model of PV. However, some optimizations remain to be done to match the performance of pure PV or HVM guests.
The sexy world of Linux kernel pvops project
The document discusses paravirtualized operations (pv-ops) in the Linux kernel which allows it to detect if it is running under virtualization like Xen or KVM and use optimized operations. Pv-ops was successful and mainly involved bug fixes recently. Most Xen kernel development is in subsystems and amounts to over 50,000 lines of code added per release. Future work includes optimizations to blkback and netback drivers to improve I/O performance, as well as adding perf support and developing a hybrid PV/HVM domain 0 capability. The presenter takes questions at the end.
kdump: usage and_internals
Kdump is a long existing method for acquiring dump of crashed kernel, however very few literatures are available to understand it's usage and internals. We receive a lot of queries on kexec mailing list about different issues related to the kexec/kdump environment.
In this presentation, we talk about basics of kdump usage and some internals about kdump/kexec kernel implementation. It includes end to end flow from kdump kernel configuration to crash analysis. We discuss some of the problem which is frequently faced by kdump users. It also includes related information about ELF structure, so that one can debug if vmcore itself gets corrupted because of any architecture related issue.
LF Collaboration Summit: Xen Project 4 4 Features and Futures
Xen Project 4.4 Release Information.
Delivered by Russell Pavlicek at Linux Foundation Collaborative Summit on March 27, 2014.
Updated for LinuxCon/CloudOpen North America in August 2014.
XPDS13: HVM Dom0 - Any unmodified OS as Dom0 - Will Auld, Intel
This document discusses using an unmodified operating system as a domain 0 (dom0) in a hypervisor-virtualized (HVM) environment rather than the traditional para-virtualized (PV) dom0. It outlines the limitations of PV dom0 and how new CPU virtualization technologies enable using HVM dom0 to support any unmodified guest OS, improve performance, and reduce maintenance efforts. The document calls for porting Xen userland tools to Windows and enabling PV drivers to support Windows as an HVM dom0. This would expand Xen's usage models to include new client and trusted execution scenarios.
XPDS16: Xen Development Update
The talk is a status report for the latest release and development projects. It will cover the new features and important bug fixes (if any) in 4.7. It will also provide insight on what’s in the queue for the next major release. Retrospective on the release process will also be part of talk.
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...The Linux Foundation
Recent years have seen an increasing demand for supporting real-time systems in virtualized environments. To combine real-time and virtualization, a real-time scheduler at the hypervisor level is needed to provide timing guarantees to the guest virtual machines. RT-Xen provides a suite of multi-core real-time schedulers to deliver real-time performance to domains running on the Xen hypervisor. Work is underway to incorporate RT-Xen in the Xen distribution to replace the legacy SEDF scheduler. We have implemented and empirically compared a diverse set of multicore real-time scheduling policies within the RT-Xen scheduling framework. Based on extensive experiments of different scheduling policies, we plan to submit a patch on global EDF scheduler to the xen-devel as the first step to incorporate multicore real-time scheduling support within the Xen hypervisor.XPDS16: libvirt and Tools: What's New and What's Next - James Fehlig, SUSE
A year has passed since the last Xen Developer Summit and it is time to announce the quiet progress made on the libvirt libxl driver and related tooling. New features include memory, cpu, block device, and network interface statistics reporting, support for pvUSB, support for migration stream V2, peer-to-peer migration, UEFI for HVM guests via OVMF, and domain capabilities reporting to name a few. There are also many noteworthy improvements such as better conversion of xl.cfg to/from libvirt domXML, allowing users to easily switch between the xl+libxl and libvirt+libxl toolstacks.
The summit also provides an opportunity to discuss new proposals such as better control of domain placement on NUMA systems, exposing Xen's cpu pool feature in libvirt, supporting non-volatile memory for UEFI variables, and improved capabilities reporting.
Much of libvirt's value for Xen is in the tools built upon it: virt-manager, virt-viewer, virt-install, virt-builder, kimchi, OpenStack nova, etc. These tools also deserve a quick status update as they relate to Xen.
The audience is encouraged to participate, e.g. by requesting a sorely missing feature, warning of an upcoming Xen change that may affect libvirt, or simply suggesting a change that makes virtualization management life a bit easier.
From printk to QEMU: Xen/Linux Kernel debugging
The document discusses various debugging techniques for the Linux kernel including printk, gdb, kgdb, QEMU, and kdump. It provides an overview of how to use each technique including setting up a serial console with printk, remotely debugging with gdb and kgdb, adding debugging modules to QEMU, and using kdump to collect crash dumps. The document emphasizes that printk is simple but limited while gdb and QEMU provide more advanced debugging capabilities and recommends selecting a technique based on the specific debugging needs.
Aplura virtualization slides
The document discusses open source virtualization and provides an overview of key concepts like hypervisors, virtual machine environments, and different virtualization techniques. It also shares a real world case study of how Aplura implemented Xen virtualization to consolidate servers and gain flexibility. Tips are provided around hardware requirements, disk imaging, and common troubleshooting issues.
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...The Linux Foundation
Since its inception, the Xen Orchestra project which uses AGPLv3, always had a philosophy to listen and engage the community. User feedback shaped our initial concept, which first targeted system administrators. Eventually, our users drove us to support cloud-scale deployments supporting up to 2000 VM's. Retaining simplicity in usage and installation, while evolving Xen Orchestra to cloud scale posed many challenges. This led us to build many new features such ACLs, self-service, live charts, config drive management, and more, forced us to constantly evolve our architecture. First we will show how user needs changed our architecture, and how we implemented challenging problems such as user permissions, ACLs, Containers in a virtualized infrastructure and self service. We will conclude with a short demo, what is next and a lessons learned.LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...
LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...The Linux Foundation
For many years, the Xen community has been delivering a solid virtualization platform for the enterprise. In support of the Xen community innovation effort, Oracle has been translating our enterprise experience with mission-critical workloads and large-scale infrastructure deployments into upstream contributions for the Linux and Xen efforts. In this session, you'll hear from a key Oracle expert, and community member, about Oracle contributions that focus on large-scale Xen deployments, networking, PV drivers, new PVH architecture, performance enhancements, dynamic memory usage with ‘tmem', and much more. This is your chance to get an under the hood view and see why the Xen architecture is the ideal choice for the enterprise.OWF: Xen - Open Source Hypervisor Designed for Clouds
It is no accident that Xen software powers some of the largest Clouds in existence. From its outset, the Xen Project was intended to enable what we now call Cloud Computing. This session will explore how the Xen Architecture addresses the needs of the Cloud in ways which facilitate security, throughput, and agility. It will also cover some of the hot new developments of the Xen Project.
Linaro connect : Introduction to Xen on ARM
- Xen can now run on ARM hardware thanks to its rearchitecting to exploit ARM hardware virtualization extensions and remove unnecessary code like QEMU and shadow pagetables.
- It supports booting Linux as the dom0 and domUs. PV interfaces are used for I/O and there is no need for multiple guest types.
- Current status supports booting on ARMv7 hardware and some features on ARMv8 64-bit. Future work includes more platform support, ACPI, and enabling full ARMv8 virtualization.
Improving the Performance of the qcow2 Format (KVM Forum 2017)
By Alberto García.
qcow2 is QEMU's native file format for storing disk images. One of its features is that it grows dynamically, so disk space is only allocated when the virtual machine needs to store data. This makes the format efficient in terms of space requirements, but has an impact on its I/O performance. This presentation will describe some of those performance problems and will discuss possible ways to address them. Some of them can be solved by simply adjusting configuration parameters, others require improving the qcow2 driver in QEMU, and others need extending the file format itself.
(c) KVM Forum 2017
October 25 - 27, 2017
Hilton Prague, Prague, Czech Republic
http://events.linuxfoundation.org/events/archive/2017/kvm-forum
Xen Community Update 2011
The document provides an update on the Xen community. It discusses welcoming a new community manager, development activity levels being high, the Xen 4.1 release featuring new capabilities, interactions with other communities like Linux and OpenStack, and secure isolation remaining a top priority through techniques like driver domains. It also proposes a reference architecture to help products better take advantage of Xen's security and reliability benefits through features like restartable driver domains.
BACD July 2012 : The Xen Cloud Platform
Updates on XCP, XCP 1.5 and 1.6 release schedule. New XCP features such as Storage Motaion and Disaggregation
Windsor: Domain 0 Disaggregation for XenServer and XCP
The document discusses the evolution of XenServer architecture to address scalability limitations. The current architecture works well now but will hit bottlenecks on larger servers. The new "Windsor" architecture uses domain 0 disaggregation to move virtualization functions out of domain 0 and into separate domains for improved performance, scalability, and isolation. Key benefits include better VM density, use of hardware resources, stability, availability, and extensibility. It provides a flexible platform that can scale-out across servers.
What's hot (20)
XPDDS17: Keynote: Xen 4.8 at Gandi - Vincent Legout, Gandi
XPDDS17: Keynote: Xen 4.8 at Gandi - Vincent Legout, Gandi
LF Collaboration Summit: Xen Project 4 4 Features and Futures
LF Collaboration Summit: Xen Project 4 4 Features and Futures
XPDS13: HVM Dom0 - Any unmodified OS as Dom0 - Will Auld, Intel
XPDS13: HVM Dom0 - Any unmodified OS as Dom0 - Will Auld, Intel
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...
XPDS14 - RT-Xen: Real-Time Virtualization in Xen - Sisu Xi, Washington Univer...
XPDS16: libvirt and Tools: What's New and What's Next - James Fehlig, SUSE
XPDS16: libvirt and Tools: What's New and What's Next - James Fehlig, SUSE
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...
XPDS16: Xen Orchestra: building a Cloud on top of Xen - Olivier Lambert & Jul...
LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...
LCNA14: Why Use Xen for Large Scale Enterprise Deployments? - Konrad Rzeszute...
OWF: Xen - Open Source Hypervisor Designed for Clouds
OWF: Xen - Open Source Hypervisor Designed for Clouds
Improving the Performance of the qcow2 Format (KVM Forum 2017)
Improving the Performance of the qcow2 Format (KVM Forum 2017)
Windsor: Domain 0 Disaggregation for XenServer and XCP
Windsor: Domain 0 Disaggregation for XenServer and XCP
Viewers also liked
Skylark: Easy Cloud Computing
Skylark aims to provide a generic platform which enables cloud applications to be easily deployed and accessed.
In the front-end, Skylark ports Spice to Xen and customizes Spice for application window delivery and display. Skylark users can start any application subscribed from Skylark application store and does not need to know whether it runs in Linux or Windows.
In the back-end, by providing Xen Image File System (Xen-IFS), multiple VMs are allowed to start up simultaneously from the same snapshot or the same disk image. Xen-IFS will automatically keep and isolate the private data produced by each VM.
Skylark makes it possible for Multiple User Single Installation (MUSI) among VMs, and also makes it easy for application delivery through remote VM access.
Engaging the Xen Developer Comminity
This document discusses ways for hardware and software vendors to engage with the Xen developer community by contributing testing, reporting bugs, suggesting features, and submitting code patches. It outlines the benefits of contributing as well as practical guidelines for submitting high-quality bug reports, questions, and patches that are more likely to be accepted into the Xen codebase. The goal is to enable greater involvement from external organizations to help drive further development of the Xen hypervisor.
I/O Scalability in Xen
Excessive interrupts can hurt I/O scalability in Xen. The proposals discuss software interrupt throttling and interrupt-less NAPI to reduce interrupt overhead. They also discuss exposing NUMA information to Xen to improve host I/O NUMA awareness and enabling guest I/O NUMA awareness by constructing _PXM methods and extending device assignment policies.
XCP Project Update
Lars will give an update on the latest development from the XCP project, standing in for Mike McClurg. He will also talk about the latest developments in project Kronos, which is changing the delivery model for XCP from an appliance to distribution of all XCP components via Linux distributions, and explain what this means for you. He will share 2012 plans for the XCP projecft and explain how you can engage and influence the future direction of XCP.
Hardware accelerated Virtualization in the ARM Cortex™ Processors
The document discusses hardware accelerated virtualization capabilities in ARM Cortex processors including the Cortex-A15. It describes new features like large physical addressing, virtualization extensions, and a virtual interrupt controller that allow multiple operating system instances and work environments to run simultaneously in isolation on ARM devices.
Xen @ Google, 2011
Google uses virtualization for internal corporate infrastructure. As part of this, we have developed a number of tools, some open source, for managing the Xen deployment. The talk will describe the technical infrastructure used, the internal workflows and machine management processes, and the specific use-cases for virtualization.
Deep Dive into OpenStack
OpenStack is a leading open-source project to build public/private clouds. In this talk, a brief introduction of Openstack will be presented, following by a detail technical description of internal structure of main openstack software, including openstack compute, storage, and glance. This talk will also introduce a Dell's crowbar solution to automatically deploy and configure openstack software to build a large scale cloud infrastructure. Finally, Information about some of on-going development effort in the community will be shared with audience.
Xen.org: The past, the present and exciting Future
In this talk, John will explore the technology and architecture introduced in the ARM Cortex-A15 processor in support of virtualization. This is the first of multiple processors from ARM that will support true virtualization, and the ability to host existing operating systems binaries without modification. The hardware extensions were defined following careful analysis to address the key virtualization performance limitations of today's solutions while bringing new technologies to the device to better support a virtualized system.
Linux PV on HVM
Traditionally Linux has always run on Xen either as a pure PV guest or as a virtualization unaware guest in an HVM domain. Recently, under the name of "PV on HVM", a series of works has been done to make Linux aware that is running on Xen and enable as many PV interfaces as possible even when running in an HVM container. After enabling the basic PV network and disk drivers, some other more interesting optimizations were implemented: in particular remapping legacy interrupts and MSIs onto event channels. This talk will explain the idea behind the feature, the reason why avoiding interactions with the lapic is a good, and some implementation details.
Keynote Speech: Xen ARM Virtualization
Sang-bum Suh will give a talk on the current status and the future direction of Xen ARM. Xen ARM is the first ARM virtualization S/W based on Xen Architecture.
Mobile Virtualization using the Xen Technologies
Xen has been very successful on servers, and yet there are substantial areas where Xen can evolve further. In this talk Jun will discuss a compelling area where the Xen technologies can be applied to -- Mobile virtualization. Using Android as an example, the talk will explore two types of usage models, 1) Android as a guest, 2) Android as the host, showing the benefits of using the Xen technologies.
Three Reasons for using Custom Kronos Training
Presentation for White Paper at www.improvizations.com "Arguments for Custom Kronos WFC Training"
Want to save time and money with a proven training methodology? Of course not! You want to save time and money and have more effective training the really gets your team using the product to it's fullest in the shortest time possible.
What you need is training customized that is:
Efficient
Effective
Empowering
"By providing the relevant information to learners with the smallest amount of time and effort, a level of efficiency is achieved that cannot be matched by standardized training programs..."
Link Virtualization based on Xen
This document proposes a method for link virtualization on the Xen virtualization platform using Single Root I/O Virtualization (SR-IOV). It discusses using SR-IOV to minimize overhead by performing encapsulation/decapsulation and packet filtering in hardware. It also describes using MAC-in-UDP tunneling with a virtual network ID to isolate networks and a vARP protocol to map between virtual and physical MAC addresses. The document evaluates the proposed method's ability to guarantee bandwidth isolation and provides performance results for both weight-based and bandwidth-based bandwidth control approaches.
Realtime scheduling for virtual machines in SKT
The needs for immediate responsiveness of VMs in the virtualized environments have been on the rise. Several services in SKT also require soft realtime support for virtual machines to substitute the physical machines to achieve high utilization and adaptability. However, consolidated multiple OSes and irregular external events might render the hypervisor infringe on a VM's promptitude. As a solution of this problem, we are improving Xen's credit scheduler by introducing the RT_PRIORITY that guarantees a VM's running at any given point in time as long as credits remains to be burn. It would increase the quality of service and make a VM's behavior predictable on the consolidated environment. In addition, we extend our suggestion to the multi-core environment and even a large number of physical machines by using live migrations.
Viewers also liked (14)
Hardware accelerated Virtualization in the ARM Cortex™ Processors
Hardware accelerated Virtualization in the ARM Cortex™ Processors
Xen.org: The past, the present and exciting Future
Xen.org: The past, the present and exciting Future
Similar to Xen in Linux 3.x (or PVOPS)
Xen in Linux (aka PVOPS update)
This document discusses the current state and roadmap for Xen virtualization support in the Linux kernel. It notes that initial domain (dom0) support is complete in Linux 3.0 and that future work will focus on enhancing existing functionality, fixing bugs, improving 3D graphics and ACPI support, and providing enterprise features like data integrity extensions. It encourages testing Xen with Linux 3.0 and reporting any issues found.
.ppt
The document provides an overview of User Mode Linux (UML), including what it is, how it works, alternatives, and how to use it. UML allows running the Linux kernel as a userspace process, enabling uses like kernel debugging, security testing, and hosting virtual servers. It works by modifying the host kernel to create separate address spaces for guest kernels and processes using hardware virtualization. Key components discussed include filesystems, networking using TUN/TAP devices, management scripts, backups using LVM snapshots and blocksync, and network monitoring tools like MRTG and iftop.
Parallel Graphics in Frostbite - Current & Future (Siggraph 2009)
1. The document discusses parallel graphics techniques used in the Frostbite game engine, both currently and potentially in the future. It describes using job-based parallelism to utilize multiple CPU cores and the PS3 SPUs.
2. One technique is parallel command buffer recording to dispatch draw calls to multiple command buffers and scale linearly with core count. Another is software occlusion culling using the SPUs/CPU to rasterize a coarse z-buffer.
3. Potential future techniques discussed include deferred shading using compute shaders, with the compute shader culling lights and accumulating lighting per screen-space tile.
[Defcon] Hardware backdooring is practical
This presentation will demonstrate that permanent backdooring of hardware is practical. We have built a generic proof of concept malware for the intel architecture, Rakshasa, capable of infecting more than a hundred of different motherboards. The first net effect of Rakshasa is to disable NX permanently and remove SMM related fixes from the BIOS, resulting in permanent lowering of the security of the backdoored computer, even after complete earasing of hard disks and reinstallation of a new operating system. We shall also demonstrate that preexisting work on MBR subvertions such as bootkiting and preboot authentication software bruteforce can be embedded in Rakshasa with little effort. More over, Rakshasa is built on top of free software, including the Coreboot project, meaning that most of its source code is already public. This presentation will take a deep dive into Coreboot and hardware components such as the BIOS, CMOS and PIC embedded on the motherboard, before detailing the inner workings of Rakshasa and demo its capabilities. It is hoped to raise awareness of the security community regarding the dangers associated with non open source firmwares shipped with any computer and question their integrity. This shall also result in upgrading the best practices for forensics and post intrusion analysis by including the afore mentioned firmwares as part of their scope of work.
PVOps Update
The document discusses the status and strategy for updating the Linux kernel to support para-virtualized (PV) operations. It describes the current state of the PV-ops kernel, which allows one kernel to run on different virtualization platforms like Xen, KVM, and VMware. The primary goals are refactoring code for upstream submission, stabilizing existing branches, and keeping branches rebased against newer kernels. Several key components like SWIOTLB and PCI frontend drivers are being refactored and tested for upstream inclusion.
Slackware Demystified [SELF 2011]
Slackware Demystified provides an overview of the Slackware Linux distribution. It discusses Slackware's philosophy of keeping things simple and sticking close to upstream. It describes Slackware's init system, configuration files, package structure, and community support. The presentation emphasizes Slackware's minimalist approach and encourages learning through documentation rather than abstracted interfaces.
2008-11-13 CAVMEN RHEL for System z Deep Dive
Audience was technical Linux on System z practitioners. Steps through the Linux on System z development process, what is included in RHEL for System z (now + future), provisioning and patch management, and broad security updates (SELinux, Auditing, Crypto).
Pcsx2 readme 0.9.6
PCSX2 is a PlayStation 2 emulator that allows users to play PS2 games on their computer by executing PS2 code. It was created by the same team that developed PCSX, a PS1 emulator. Over more than five years of development, PCSX2 has improved compatibility from just a few demos to many popular games being playable. Current versions include dual core processor support, improved graphics emulation, and full controller support. The project relies on volunteer developers and testers who work on it in their free time.
Hardware backdooring is practical : slides
This presentation will demonstrate that permanent backdooring of hardware is practical. We have built a generic proof of concept malware for the intel architecture, Rakshasa, capable of infecting more than a hundred of different motherboards. The first net effect of Rakshasa is to disable NX permanently and remove SMM related fixes from the BIOS, resulting in permanent lowering of the security of the backdoored computer, even after complete earasing of hard disks and reinstallation of a new operating system. We shall also demonstrate that preexisting work on MBR subvertions such as bootkiting and preboot authentication software bruteforce can be embedded in Rakshasa with little effort. More over, Rakshasa is built on top of free software, including the Coreboot project, meaning that most of its source code is already public. This presentation will take a deep dive into Coreboot and hardware components such as the BIOS, CMOS and PIC embedded on the motherboard, before detailing the inner workings of Rakshasa and demo its capabilities. It is hoped to raise awareness of the security community regarding the dangers associated with non open source firmwares shipped with any computer and question their integrity. This shall also result in upgrading the best practices for forensics and post intrusion analysis by including the afore mentioned firmwares as part of their scope of work.
Visual system integrator_svi
System View Inc. develops a visual system integration tool called Visual System Integrator (VSI) that allows users to rapidly develop embedded applications that span multiple chips such as CPUs, GPUs, and FPGAs. VSI provides a graphical workflow to describe the hardware platform, develop the application by connecting functional blocks, and automatically generate code for the complete system. It gives unprecedented runtime visibility into transactions for integrated systems with different processors and FPGAs.
LCA14: LCA14-112: Upstreaming 201
Resource: LCA14
Name: LCA14-112: Upstreaming 201
Date: 03-03-2014
Speaker: Matt Porter
Video: https://www.youtube.com/watch?v=FiQ5uV_Mm5c
Coding for multiple cores
This document discusses strategies for coding games to take advantage of multiple processor cores. It notes that future CPUs will be predominantly multi-core, and that good design is critical for effective multithreading. It provides examples of common tasks that can be multithreaded, such as file decompression and rendering. It also discusses synchronization techniques, managing threads, and profiling multithreaded applications.
the NML project
NML is a project for out-of-band server management that allows for extremely configurable OS installation with minimal human intervention. It aims to build an open-source matrix of server hardware and OS distribution combinations. The current status is that it is hosted on GitHub and has two main members. NML encapsulates intelligence in HTTP and uses technologies like iPXE, DHCP, and preseeding/kickstarting to remotely install and configure operating systems on servers. It focuses on flexibility and independence from specific OSes or hardware.
Talk 160920 @ Cat System Workshop
The document discusses dynamically hacking the Linux kernel with containers. It begins by introducing the speaker and their research interests. It then discusses three ways to modify the kernel space: kernel modules, live patching, and kernel detouring. Kernel detouring allows hijacking system calls within containers for cross-OS compatibility. Challenges include insufficient isolation and limited development. The talk demonstrates a proof-of-concept of running FreeBSD binaries on Linux using kernel detouring and containers. It remapped Linux system calls to FreeBSD equivalents and provided a FreeBSD environment within a Linux container.
LCU14 114- Upstreaming 201
LCU14 114- Upstreaming 201
---------------------------------------------------
Speaker: Matt Porter
Date: September 15, 2014
---------------------------------------------------
★ Session Summary ★
This session is an advanced course on Linux kernel upstreaming fundamentals. The course covers how the arm-soc kernel tree is maintained and why that is important to ARM Linux kernel developers. The focus of the course is the explanation of the detailed mechanics of creating and posting patch series to upstream mailing lists for several common cases. Annotated session content is made up of previously upstreamed ARM support captured from emails to the kernel mailing lists. The target audience is both software engineers and engineering managers preparing to upstream software into the kernel. The topic requires a solid background in software configuration management terminology and the git SCM tool as well as a good technical understanding of the Linux kernel itself.
---------------------------------------------------
★ Resources ★
Zerista: http://lcu14.zerista.com/event/member/137718
Google Event: https://plus.google.com/u/0/events/cvjq36c7q7f1dvlmdgvkps39sg0
Video: https://www.youtube.com/watch?v=Au6Ijfz8ays&list=UUIVqQKxCyQLJS6xvSmfndLA
Etherpad: http://pad.linaro.org/p/lcu14-114
---------------------------------------------------
★ Event Details ★
Linaro Connect USA - #LCU14
September 15-19th, 2014
Hyatt Regency San Francisco Airport
---------------------------------------------------
http://www.linaro.org
http://connect.linaro.org
App container rkt
This document discusses container technologies including App Container (appc) and rkt. It provides an overview of appc components like the image format, discovery, and executor. It then discusses rkt, an implementation of appc, describing its modular architecture with stages 0-2 and use of systemd and cgroups for isolation. It also touches on rkt security, networking, and integration with systemd and user namespaces.
ELC-E Linux Awareness
This document discusses improving debugging of the Linux kernel using the open source debugger GDB. It begins with an overview of existing ways to debug the kernel using GDB, including via KGDB, Qemu, and JTAG probes like OpenOCD. It then discusses the concept of adding "Linux awareness" to GDB, which would allow it to better understand kernel concepts like threads and modules. Finally, it outlines three approaches to implementing this awareness: via a GDB scripting extension, in the GDB stub, or with a C extension to GDB. The overall goal is to make GDB a more full-featured and useful tool for kernel debugging.
Velocity 2012 - Learning WebOps the Hard Way
Working in Web Operations means dealing with production systems that in most cases needs to be operational 24×7x365.
To reach 99.99999% uptime, you must fail as little as possible.
This talk will go through a few real-world incidents and failures experienced by our small WebOps team, and outline what we are learning (the hard way), and how we’re trying to improve.
What could possibly go wrong? :-)
Check the version with fixes. Link in description
Docker can be used as an everyday development tool. It allows building, shipping and running applications securely by using containers. Containers allow encapsulating applications from the host machine and provide resource isolation using features like cgroups and namespaces. The key Docker concepts include images, containers, volumes, and the Docker engine. Docker Compose can be used to define and run multi-container Docker applications using a YAML file.
Kernel Recipes 2014 - The Linux graphics stack and Nouveau driver
The Linux graphics stack is constantly evolving to add support for new hardware. This evolution and new software specifications have forced the X graphical server to be split into several components including a now rotates in the Linux kernel, the Direct Rendering Manager (DRM). A quick presentation of these components and their role will be carried out before looking at new major change in the common code, the NVIDIA Optimus technology.
One equipped with Optimus technology laptop has two graphics processing units (GPUs), one from Intel and one from NVIDIA. This technology combines the low power Intel GPU when the machine is not used to the performance of NVIDIA GPUs when the user plays. This technology, however, is a nightmare to manage kernel-side although the final building blocks necessary for its complete management are being finalized. Further explanation of this issue will be made and we’ll see how this new software architecture has added graphics acceleration on embedded processor SoCs like Tegra.
The case of open source NVIDIA driver, called “New” will then be studied. This is the graphics driver community as it is developed without the help of NVIDIA and attracted several regular contributors, including myself! We’ll take a quick history of the project before talking about the current developments and issues related to the lack of documentation.
The end of this presentation will then be left to the participants so they can ask more general questions about the graphics stack, if they wish.
Martin Peres, Laboratoire Bordelais de Recherche en Informatique
Similar to Xen in Linux 3.x (or PVOPS) (20)
Parallel Graphics in Frostbite - Current & Future (Siggraph 2009)
Parallel Graphics in Frostbite - Current & Future (Siggraph 2009)
Kernel Recipes 2014 - The Linux graphics stack and Nouveau driver
Kernel Recipes 2014 - The Linux graphics stack and Nouveau driver
More from The Linux Foundation
ELC2019: Static Partitioning Made Simple
Static partitioning is used to split an embedded system into multiple domains, each of them having access only to a portion of the hardware on the SoC. It is key to enable mixed-criticality scenarios, where a critical application, often based on a small RTOS, runs alongside a larger non-critical app, typically based on Linux. The two domains cannot interfere with each other.
This talk will explain how to use Xen for static partitioning. It will introduce dom0-less, a new Xen feature written for the purpose. Dom0-less allows multiple VMs to start at boot time directly from the Xen hypervisor, decreasing boot times drastically. It makes it very easy to partition the system without virtualization overhead. Dom0 becomes unnecessary.
This presentation will go into details on how to setup a Xen dom0-less system. It will show configuration examples and explain device assignment. The talk will discuss its implications for latency-sensitive and safety-critical environments.
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...The Linux Foundation
Daniel Smith discusses TrenchBoot, a project aiming to establish a unified approach to harnessing boot integrity technologies across open source platforms. TrenchBoot will enable establishing hardware-rooted integrity during platform boot (first launch inspection), runtime (runtime inspection), and other states. For runtime inspection, TrenchBoot will develop a way to securely re-establish the integrity of Xen at any time without rebooting by dynamically launching an integrity kernel to inspect and verify Xen. The talk outlines the initial and future work of TrenchBoot to integrate these capabilities with Linux, Xen and other open source projects.XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...The Linux Foundation
Artem will briefly cover what has been done since the first talk on Xen in Automotive domain back in 2013, what is going on now and what is still missing for broad adaptation of Xen in vehicles. The following topics will be covered:
Embedded/automotive features of Xen
Collaboration with AGL and GENIVI organizations for standardization
Efforts on Functional Safety compliance
Artem will also go over typical automotive use scenarios for Xen which may not be the same as generic computing use of hypervisor.XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...The Linux Foundation
In this keynote talk, we will give an overview of the state of the Xen Project, trends that impact the project, see whether challenges that surfaced last year have been addressed and how we did it, and highlight new challenges and solutions for the coming year.XPDDS19 Keynote: Unikraft Weather Report
In recent years unikernels have shown immense performance potential (e.g., boot times of only a few ms, image sizes of only hundreds of KBs).The fundamental drawback of unikernels is that they require that applications be manually ported to the underlying minimalistic OS, needing both expert work and often considerable amount of time.
The Unikraft project provides a unikernel code base and build system that significantly simplifies the building of unikernels. In addition to support for a number CPU architectures, languages and frameworks, Unikraft provides debugging and tracing features that are generally sorely missing from unikernel projects. In this talk we will talk about these features, show a set of preliminary performance numbers, and provide a roadmap for the project's future.
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...The Linux Foundation
The idea of making Xen secret-free has been floating since Spectre and Meltdown came into light. In this talk we will discuss what is being done and what needs to be done next.XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
This talk will introduce Dom0-less: a new way of using Xen to build mixed-criticality solutions. Dom0-less is a Xen feature that adds a novel approach to static partitioning based on virtualization. It allows multiple domains to start at boot time directly from the Xen hypervisor, decreasing boot times dramatically. Xen userspace tools, such as xl and libvirt, become optional.
Dom0-less extends the existing device tree based Xen boot protocol to cover information required by additional domains. Binaries, such as kernels and ramdisks, are loaded by the bootloader (u-boot) and advertised to Xen via new device tree bindings.
The audience will learn how to use Dom0-less to partition the system. Uboot and device tree configuration details will be explained to enable the audience to get the most out of this feature. The talk will include a status update and details on future plans.
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...The Linux Foundation
As the number of contributions grow, reviewer bandwidth becomes a bottleneck; and maintainers are always asking for more help. However, ultimately maintainers must at least Ack every patch that goes in; so if you're not a maintainer, how can you contribute? Why should anyone care about your opinion?
This talk will try to lay out some advice and guidelines for non-maintainers, for how they can do code review in a way which will effectively reduce the load on maintainers when they do come to review a patch.XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
This talk is a follow-up to our Summit 2017 presentation in which we covered our plans for Intel VMFUNC and #VE, as well as related use-cases. This year, we will provide a report on what we have accomplished in Xen 4.12, and what remains to be addressed. We will also give a brief status update of VMI on AMD hardware. The session will end with some real-world numbers of the Hypervisor Introspection solution running on Citrix Hypervisor 8.0 with #VE enabled.
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
Safety certification is one of the essential requirements for software to be used in highly regulated industries. Besides technical and compliance issues (such as ISO 26262 vs IEC 611508) transitioning an existing project to become more easily safety certifiable requires significant changes to development practices within an open source project.
In this session, we will lay out some challenges of making safety certification achievable in open source and the Xen Project. We will outline the process the Xen Project has followed thus far and highlight lessons learned along the way. The talk will primarily focus on necessary process, tooling changes and community challenges that can prevent progress. We will be offering an in-depth review of how Xen Project is approaching this challenging goal and try to derive lessons for other projects and contributors.
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
This document summarizes a discussion around enabling functional safety certification for the Xen open source hypervisor project. Key points discussed include:
- Establishing a split development model with open and closed parts to balance community needs and safety requirements.
- Developing reference implementations and stacks supported by multiple vendors to demonstrate safety certification feasibility.
- Creating plans and processes around requirements, documentation, verification testing, and tooling integration to begin filling gaps for certification.
- Addressing challenges around funding, resources, expertise, and maintaining contributions to ensure any initial work is sustainable long-term.
- Taking an iterative, agile approach to make early progress while further securing necessary funding and support from interested parties.
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
2018 saw fundamental shifts in security boundaries which were previously taken for granted. A lot of work has been done in the past 2 years, and largely in secret under embargo, but there is plenty more work to be done to strengthen the existing mitigations and to try to recover some performance without reopening security holes.
This talk will look at speculative execution sidechannels, the work which has already been done to mitigate the security holes, and future work which hopes to bring some improvements.
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
The Arm architecture provides a set of guidelines that any software should abide by when accessing the memory with MMU off and update page-tables. Failing to do so may result in getting TLB conflicts or breaking coherency.
In a previous talk ("Keeping coherency on Arm"), we focused on updating safely the stage-2 (aka P2M) page-tables. This talk will focus on the boot code and Xen memory management.
During this session, we will introduce some of the guidelines and when they should be used. We will also discuss how Xen boot sequence needs to be reworked to avoid breaking the guidelines.
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...The Linux Foundation
For many years the QEMU codebase has contained PV backends for Xen guests, giving them paravirtual access to storage, network, keyboard, mouse, etc. however these backends have not been configurable as QEMU devices as their implementation did not fully adhere to the QEMU Object Model (QOM).
Particularly the PV storage backend not using proper QOM devices, or qdevs, meant that the QEMU block layer needed to maintain legacy code that was cluttering up the source. This was causing push-back from the maintainers who did not want to accept any patches relating to that Xen backend until it was 'qdevified'.
In this talk, I'll explain the modifications I made to QEMU to achieve 'qdevification' of the PV storage backend, how compatibility with the libxl toolstack was maintained, and what the next steps in both QEMU and libxl development should be.XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
PCI is a local computer bus for attaching hardware devices in a computer, and is the main peripheral bus on modern x86 systems. As such, having a proper way to emulate it is crucial for Xen to be able to expose both fully emulated devices or passthrough devices to guests.
This talk will focus on the current status of PCI emulation in Xen, how and where it is used, what are its main limitations and future plans to improve it in order to be more robust and modular.
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
Volodymyr will speak about TEE mediators. This is a new feature in Xen which allows multiple virtual machines to interact with Trusted Execution Environment available on platform. He developed mediator for one of TEEs, namely OP-TEE.
He will give background information on why TEE is needed at all and share some implementation details.
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...The Linux Foundation
Xen is a very powerful hypervisor with a talented and diverse developers community. Despite the fact it's almost everywhere (from the Cloud to the embedded world), it can be difficult to set up and manage as a system administrator. General purpose distros have Xen packages, but that's just a start in your Xen journey: you need some tooling and knowledge to have a working and scalable platform.
XCP-ng was built to overcome those issues: by bringing Xen to the masses with a fully turnkey distro with Xen as its core. It's the logical sequel to the XCP project, with a community focus from the start. We'll see how it happened, what we did, and what's next. Finally, we'll see the impact of XCP-ng on the Xen Project.XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...The Linux Foundation
Doug has long advocated for more CI/CD (Continuous Integration / Continuous Delivery) processes to be adopted by the Xen Project from the use of Travis CI and now GitLab CI. This talk aims to propose ideas for building upon the existing process and transforming the development process to provide users a higher quality with each release by the Xen Project.XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...The Linux Foundation
High level toolstacks for server and cloud virtualization are very mature with large communities using and supporting them. Client virtualization is a much more niche community with unique requirements when compared to those found in the server space. In this talk, we’ll introduce a client virtualization toolstack for Xen (redctl) that we are using in Redfield, a new open-source client virtualization distribution that builds upon the work done by the greater virtualization and Linux communities. We will present a case for maturing libxl’s Go bindings and discuss what advantages Go has to offer for high level toolstacks, including in the server space.XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
Today Xen is scheduling guest virtual cpus on all available physical cpus independently from each other. Recent security issues on modern processors (e.g. L1TF) require to turn off hyperthreading for best security in order to avoid leaking information from one hyperthread to the other. One way to avoid having to turn off hyperthreading is to only ever schedule virtual cpus of the same guest on one physical core at the same time. This is called core scheduling.
This presentation shows results from the effort to implement core scheduling in the Xen hypervisor. The basic modifications in Xen are presented and performance numbers with core scheduling active are shown.
More from The Linux Foundation (20)
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19: How TrenchBoot is Enabling Measured Launch for Open-Source Platform ...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen in Automotive - Artem Mygaiev, Director, Technology Solu...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Xen Project Weather Report 2019 - Lars Kurth, Director of Op...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Secret-free Hypervisor: Now and Future - Wei Liu, Software E...
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Xen Dom0-less - Stefano Stabellini, Principal Engineer, Xilinx
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19 Keynote: Patch Review for Non-maintainers - George Dunlap, Citrix Sys...
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
XPDDS19: Memories of a VM Funk - Mihai Donțu, Bitdefender
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: Overcoming Community Challeng...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
OSSJP/ALS19: The Road to Safety Certification: How the Xen Project is Making...
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Speculative Sidechannels and Mitigations - Andrew Cooper, Citrix
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: Keeping Coherency on Arm: Reborn - Julien Grall, Arm ltd
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: QEMU PV Backend 'qdevification'... What Does it Mean? - Paul Durrant...
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: Status of PCI Emulation in Xen - Roger Pau Monné, Citrix Systems R&D
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: [ARM] OP-TEE Mediator in Xen - Volodymyr Babchuk, EPAM Systems
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Bringing Xen to the Masses: The Story of Building a Community-driven...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Will Robots Automate Your Job Away? Streamlining Xen Project Contrib...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Client Virtualization Toolstack in Go - Nick Rosbrook & Brendan Kerr...
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
XPDDS19: Core Scheduling in Xen - Jürgen Groß, SUSE
Recently uploaded
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
ABSTRACT: A prima vista, un mattoncino Lego e la backdoor XZ potrebbero avere in comune il fatto di essere entrambi blocchi di costruzione, o dipendenze di progetti creativi e software. La realtà è che un mattoncino Lego e il caso della backdoor XZ hanno molto di più di tutto ciò in comune.
Partecipate alla presentazione per immergervi in una storia di interoperabilità, standard e formati aperti, per poi discutere del ruolo importante che i contributori hanno in una comunità open source sostenibile.
BIO: Sostenitrice del software libero e dei formati standard e aperti. È stata un membro attivo dei progetti Fedora e openSUSE e ha co-fondato l'Associazione LibreItalia dove è stata coinvolta in diversi eventi, migrazioni e formazione relativi a LibreOffice. In precedenza ha lavorato a migrazioni e corsi di formazione su LibreOffice per diverse amministrazioni pubbliche e privati. Da gennaio 2020 lavora in SUSE come Software Release Engineer per Uyuni e SUSE Manager e quando non segue la sua passione per i computer e per Geeko coltiva la sua curiosità per l'astronomia (da cui deriva il suo nickname deneb_alpha).
Ocean lotus Threat actors project by John Sitima 2024 (1).pptx
Ocean Lotus cyber threat actors represent a sophisticated, persistent, and politically motivated group that poses a significant risk to organizations and individuals in the Southeast Asian region. Their continuous evolution and adaptability underscore the need for robust cybersecurity measures and international cooperation to identify and mitigate the threats posed by such advanced persistent threat groups.
TrustArc Webinar - 2024 Global Privacy Survey
How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Imagine a world where machines not only perform tasks but also learn, adapt, and make decisions. This is the promise of Artificial Intelligence (AI), a technology that's not just enhancing our lives but revolutionizing entire industries.
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Simplify your search for a reliable Python development partner! This list presents the top 10 trusted US providers offering comprehensive Python development services, ensuring your project's success from conception to completion.
Essentials of Automations: The Art of Triggers and Actions in FME
In this second installment of our Essentials of Automations webinar series, we’ll explore the landscape of triggers and actions, guiding you through the nuances of authoring and adapting workspaces for seamless automations. Gain an understanding of the full spectrum of triggers and actions available in FME, empowering you to enhance your workspaces for efficient automation.
We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
Programming Foundation Models with DSPy - Meetup Slides
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
CAKE: Sharing Slices of Confidential Data on Blockchain
Presented at the CAiSE 2024 Forum, Intelligent Information Systems, June 6th, Limassol, Cyprus.
Synopsis: Cooperative information systems typically involve various entities in a collaborative process within a distributed environment. Blockchain technology offers a mechanism for automating such processes, even when only partial trust exists among participants. The data stored on the blockchain is replicated across all nodes in the network, ensuring accessibility to all participants. While this aspect facilitates traceability, integrity, and persistence, it poses challenges for adopting public blockchains in enterprise settings due to confidentiality issues. In this paper, we present a software tool named Control Access via Key Encryption (CAKE), designed to ensure data confidentiality in scenarios involving public blockchains. After outlining its core components and functionalities, we showcase the application of CAKE in the context of a real-world cyber-security project within the logistics domain.
Paper: https://doi.org/10.1007/978-3-031-61000-4_16
Removing Uninteresting Bytes in Software Fuzzing
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
20240605 QFM017 Machine Intelligence Reading List May 2024
Everything I found interesting about machines behaving intelligently during May 2024
Building Production Ready Search Pipelines with Spark and Milvus
Spark is the widely used ETL tool for processing, indexing and ingesting data to serving stack for search. Milvus is the production-ready open-source vector database. In this talk we will show how to use Spark to process unstructured data to extract vector representations, and push the vectors to Milvus vector database for search serving.
UiPath Test Automation using UiPath Test Suite series, part 6
Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slack
Discover the seamless integration of RPA (Robotic Process Automation), COMPOSER, and APM with AWS IDP enhanced with Slack notifications. Explore how these technologies converge to streamline workflows, optimize performance, and ensure secure access, all while leveraging the power of AWS IDP and real-time communication via Slack notifications.
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Choosing The Best AWS Service For Your Website + API.pptx
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
OpenID AuthZEN Interop Read Out - Authorization
During Identiverse 2024 and EIC 2024, members of the OpenID AuthZEN WG got together and demoed their authorization endpoints conforming to the AuthZEN API
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.Infrastructure Challenges in Scaling RAG with Custom AI models
Building Retrieval-Augmented Generation (RAG) systems with open-source and custom AI models is a complex task. This talk explores the challenges in productionizing RAG systems, including retrieval performance, response synthesis, and evaluation. We’ll discuss how to leverage open-source models like text embeddings, language models, and custom fine-tuned models to enhance RAG performance. Additionally, we’ll cover how BentoML can help orchestrate and scale these AI components efficiently, ensuring seamless deployment and management of RAG systems in the cloud.
Recently uploaded (20)
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
Cosa hanno in comune un mattoncino Lego e la backdoor XZ?
Ocean lotus Threat actors project by John Sitima 2024 (1).pptx
Ocean lotus Threat actors project by John Sitima 2024 (1).pptx
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
AI 101: An Introduction to the Basics and Impact of Artificial Intelligence
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Your One-Stop Shop for Python Success: Top 10 US Python Development Providers
Essentials of Automations: The Art of Triggers and Actions in FME
Essentials of Automations: The Art of Triggers and Actions in FME
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
CAKE: Sharing Slices of Confidential Data on Blockchain
CAKE: Sharing Slices of Confidential Data on Blockchain
20240605 QFM017 Machine Intelligence Reading List May 2024
20240605 QFM017 Machine Intelligence Reading List May 2024
Building Production Ready Search Pipelines with Spark and Milvus
Building Production Ready Search Pipelines with Spark and Milvus
UiPath Test Automation using UiPath Test Suite series, part 6
UiPath Test Automation using UiPath Test Suite series, part 6
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slack
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slack
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Choosing The Best AWS Service For Your Website + API.pptx
Choosing The Best AWS Service For Your Website + API.pptx
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
Infrastructure Challenges in Scaling RAG with Custom AI models
Infrastructure Challenges in Scaling RAG with Custom AI models
Xen in Linux 3.x (or PVOPS)
- 1. Xen in Linux (aka PVOPS update) Ian Campbell Ian.Campbell@citrix.com & Konrad Rzeszutek Wilk konrad.wilk@oracle.com Sponsored by: & &
- 2. Agenda Current state Roadmap Distributions How you can help QA
- 3. Current state Domain 0 Support Added to Linux 3.0 Ongoing work to round out the feature set in Linux 3.1 and onwards
- 4. Current state – completed Feature/Kernel 2.6.37 or 2.6.38 2.6.39 3.0 3.1 future earlier Xen SWIOTLB ACPI/MSI Xen PCI KMS(framebuffer),Watchdog netback blkback pciback VGA text debugfs MMU tracing API Memory hotplug (balloon driver) Tmem/self-ballooning TTM (3D graphics, or 32bit cards) 3.3? Oprofile/ftrace PV ticket spinlocks Hasn't been written Needs work Maintainer happy
- 5. Features we would like in future Kernel/Feature 2.6.37 or 2.6.38 2.6.39 3.0 3.1 future earlier Netback zero-copy (aka PG_foreign) 3.3? Netback NAPI Netffront SG coalescing frontswap Blkback/front DIF/DIX (Data Integrity Extensions) Blkback/front TRIM/DISCARD 3.2 Blkback/front serial numbers (VPD) Hugepages (PV) PV Audio (GSOC 2011) – userspace front/black daemons PV USB (or use QEMU's USB 3.0 to be written stack) ACPI S3 (and hibernate) ACPI Cx/Px EFI Kexec for Dom0 and PvonHVM (GSOC 2011) Hasn't been written Needs work Maintainer happy
- 6. New in 3.1 Xen-pciback module Last major backend to be included Usability improvements e.g. Auto loading of backend modules Helps distros to package / deploy Memory Hotplug Bug fixes e.g. VGA text console for dom0 fixed
- 7. Planned for 3.2 Hwclock support (date -s) Blkback: ”feature-barrier” support Blkback/front: ”feature-discard” support PCIback: Support for multi-segmented (”big”) boxes Kexec/kdump support for PVHVM guests Bug fixes
- 8. Roadmap 3.3 and onwards PV Spinlock support ACPI S3 3D graphics ACPI cpufreq support Blkback multiring Netback optimisations Continue to round out the feature set, usability, rough edges
- 9. In other words Features to enhance existing functionality Bug fixes
- 10. Pace of development Non-merge commits Signed-off-by a Xen MAINTAINER 2.6.39: 145 3.0: 131 3.1: 90 3.2: 122 (5 days into merge window)
- 11. Executing roadmap No more ”dom0” branches in either Jeremy or Konrad's git tree! All development is against Linus's kernel. Patches are now against stock kernel. Always include the ”other” subsystem maintainer: e.g. Block or network subsystem maintainer Use MAINTAINERS file ./scripts/get_maintainer.pl
- 12. OK, so upstream has stuff. So I can just install <favorite distro> and use Xen? Yes! (when distributions start shipping 3.0+ kernel) For details visit XenDom0Kernels Some distros don't enable all backends – please open distro bugs (and let xen-devel know) Or you can build a v3.0+ Linux kernel with Xen 4.1.1 on existing distro. Details, explanations, etc: XenParavirtOps Wiki
- 13. How you can help Take Linux 3.1 for a spin with Xen 4.1.2... … or even Linux 3.2-rc1 etc if adventurous Run it first without Xen to establish a baseline Then run it under Xen and see what happens Please send e-mail to xen-devel with what works and with what does not. As always: XenParavirtOps
- 14. Known Bugs in 3.1 32-bit graphic cards (ATI ES1000) with Xorg do not work. Has to revert two patches. Ongoing 3.1 is still quite new. … Bugs to be documented in: Linux_31_bugs Please report on xen-devel so we can reproduce, fix and proposed for backport
- 15. QA