This document introduces real-time concepts including what real-time is, real-time terms like loop cycle time and jitter, and real-time operating systems. It discusses using LabVIEW Real-Time with a real-time host and various real-time targets like PXI controllers, CompactRIO, and FieldPoint controllers. The document compares different real-time target platforms and outlines how to select an appropriate real-time operating system.
BM Real-time Technologies for SUSE Linux Enterprise Real TimeNovell
The need for real-time quality of service (QoS) has been around for years. However, in the past, real-time solutions required custom-built hardware, proprietary real-time operating systems, and specialized skills in C, C++, or ADA. All of this has made the solutions expensive to create and maintain. With the industry now moving increasingly to open standards, IBM and Novell have recognized the opportunity to combine x86 hardware, Linux and WebSphere products to provide real-time response times.
IBM real-time technologies combine select IBM System x hardware that is optimized for real-time workloads with WebSphere Real Time for SUSE Linux Enterprise Real Time for hard real-time QoS, and WebSphere Virtual Enterprise with WebSphere Real Time for SUSE Linux Enterprise Server for differentiated soft real-time QoS. In this session, you will learn about these technologies and how to benefit from them.
JPCM is a Java wrapper for the PCM performance monitoring tool from Intel. It provides metrics on CPU utilization, cache hits and misses, memory usage, and instruction counts. It exposes over 20 counters for the CPU cores, cache, and memory usage. Users can take snapshots before and after running code to analyze performance bottlenecks. The tool currently supports Intel Xeon and Core processors and future work includes moving to a pure Java implementation and integrating with other tools.
This document discusses using GNU/Linux for safety-related systems. It introduces GNU/Linux and its development process using tools like git. It also discusses kernel development tools like git, cscope, sparse and tools for testing like gcov and gprof. Finally, it discusses safety standards like IEC 61508 and requirements for the highest safety integrity level like those in EN 50128, including requirements for modular design, coding standards, testing and configuration management. The goal is to determine if GNU/Linux is suitable for safety-critical applications.
Introduction to BeRTOS, real time embedded operating system open source. BeRTOS is free also for commercial projects or closed source applications.
http://www.bertos.org/download/
The key problematic instructions for virtualization on ARM are those that change processor state or mode, access privileged resources, or cause unpredictable behavior when executed in user mode. These must be trapped and emulated by the virtual machine monitor.
The document discusses I/O latency issues in Xen-ARM virtualization. It finds that the credit scheduler does not adequately support time-sensitive applications due to the hierarchical scheduling nature and split driver model. Measurements show large worst-case latencies throughout the interrupt path, including preemption, scheduling, and intra-domain latencies. Experiments reveal that not-boosted virtual CPUs and multi-boost situations negatively impact latency. Solutions are needed to minimize I/O latency for mobile and real-time environments in Xen-ARM.
Numerous technologies exist for profiling and tracing live Linux systems - from the traditional and straight forward gProf and strace to the more elaborate SystemTap, oProfile and the Linux Trace Toolkit. Very recently some new technologies, perf events and ftrace, have appeared that can already largely take the place of these traditional tools and have gained mainline acceptance in the Linux community - meaning that they will become more and more relevant in the future and are already being used to shed light on real world performance issues.
This presentation provides an overview of a number of the more noteworthy instrumentation tools available for Linux and the technologies that they build upon. Some examples of using perf events to analyse a running system to help track down real world performance problems are demonstrated.
BM Real-time Technologies for SUSE Linux Enterprise Real TimeNovell
The need for real-time quality of service (QoS) has been around for years. However, in the past, real-time solutions required custom-built hardware, proprietary real-time operating systems, and specialized skills in C, C++, or ADA. All of this has made the solutions expensive to create and maintain. With the industry now moving increasingly to open standards, IBM and Novell have recognized the opportunity to combine x86 hardware, Linux and WebSphere products to provide real-time response times.
IBM real-time technologies combine select IBM System x hardware that is optimized for real-time workloads with WebSphere Real Time for SUSE Linux Enterprise Real Time for hard real-time QoS, and WebSphere Virtual Enterprise with WebSphere Real Time for SUSE Linux Enterprise Server for differentiated soft real-time QoS. In this session, you will learn about these technologies and how to benefit from them.
JPCM is a Java wrapper for the PCM performance monitoring tool from Intel. It provides metrics on CPU utilization, cache hits and misses, memory usage, and instruction counts. It exposes over 20 counters for the CPU cores, cache, and memory usage. Users can take snapshots before and after running code to analyze performance bottlenecks. The tool currently supports Intel Xeon and Core processors and future work includes moving to a pure Java implementation and integrating with other tools.
This document discusses using GNU/Linux for safety-related systems. It introduces GNU/Linux and its development process using tools like git. It also discusses kernel development tools like git, cscope, sparse and tools for testing like gcov and gprof. Finally, it discusses safety standards like IEC 61508 and requirements for the highest safety integrity level like those in EN 50128, including requirements for modular design, coding standards, testing and configuration management. The goal is to determine if GNU/Linux is suitable for safety-critical applications.
Introduction to BeRTOS, real time embedded operating system open source. BeRTOS is free also for commercial projects or closed source applications.
http://www.bertos.org/download/
The key problematic instructions for virtualization on ARM are those that change processor state or mode, access privileged resources, or cause unpredictable behavior when executed in user mode. These must be trapped and emulated by the virtual machine monitor.
The document discusses I/O latency issues in Xen-ARM virtualization. It finds that the credit scheduler does not adequately support time-sensitive applications due to the hierarchical scheduling nature and split driver model. Measurements show large worst-case latencies throughout the interrupt path, including preemption, scheduling, and intra-domain latencies. Experiments reveal that not-boosted virtual CPUs and multi-boost situations negatively impact latency. Solutions are needed to minimize I/O latency for mobile and real-time environments in Xen-ARM.
Numerous technologies exist for profiling and tracing live Linux systems - from the traditional and straight forward gProf and strace to the more elaborate SystemTap, oProfile and the Linux Trace Toolkit. Very recently some new technologies, perf events and ftrace, have appeared that can already largely take the place of these traditional tools and have gained mainline acceptance in the Linux community - meaning that they will become more and more relevant in the future and are already being used to shed light on real world performance issues.
This presentation provides an overview of a number of the more noteworthy instrumentation tools available for Linux and the technologies that they build upon. Some examples of using perf events to analyse a running system to help track down real world performance problems are demonstrated.
The document discusses real-time operating systems for networked embedded systems. It provides an example of a fire alarm system using sensors, controllers and a central server connected by low-bandwidth radio links. It then discusses the need for a collaborative action routing solution that is dynamic, auto-configurable and minimizes collisions. The document outlines features of real-time operating systems including scheduling, resource allocation, interrupt handling and targeting various processor architectures.
This document describes a protocol test generator that uses nested virtual machines and rollback mechanisms to perform exhaustive fuzz testing of protocol implementations. It proposes using a virtual test protocol to encapsulate test packets and control the target virtual machine. Special packets allow taking snapshots of the target VM state and rolling back to previous snapshots to repeatedly test protocol states with different fuzzed packets. The current prototype implements this approach with KVM and QEMU virtual machines to find bugs in TLS/SSL protocol implementations through fuzz testing of the handshake process.
* Know the reasons why various operating systems exist and how they are functioned for dedicated purposes
* Understand the basic concepts while building system software from scratch
• How can we benefit from cheap ARM boards and the related open source tools?
- Raspberry Pi & STM32F4-Discovery
The document discusses real-time operating systems (RTOS). It defines an RTOS as an OS intended to serve real-time application requests. It classifies RTOS as hard, firm, or soft based on adherence to deadlines. It describes RTOS architecture including tasks, synchronization, communication, memory management, and other kernel functions. It lists features such as multithreading, priorities, communication, and short latencies. Finally, it provides examples of widely used RTOS like QNX, RTLinux, VxWorks, and Windows CE.
Solving Real-Time Scheduling Problems With RT_PREEMPT and Deadline-Based Sche...peknap
In dealing with a real world problem of scheduling three classes of tasks – network packet forwarding, voice over IP and application level services for a home gateway device, the author found that mechanisms coming with vanilla Linux kernel are not enough. This talk will cover the unique real-time requirements for each task class, why moving softirq to process context with RT_PREEMPT patch is an important step in solving the problem and how a deadline based process scheduler would be a better solution than regular real-time scheduling classes.
Double-Take Software provides workload optimization solutions including disaster recovery, high availability, server migration, and management. It has over 19,000 customers including half of the Fortune 500. Solutions are hardware and storage agnostic and support migrations between physical and virtual environments with minimal downtime. Real-time replication allows migrations to complete within minutes.
This document discusses the challenges of real-time computing on Linux and potential solutions. Real-time means very low maximum latency, below 100 microseconds. While Linux was not designed for real-time, it is now used in many embedded systems. Options to address real-time include using separate hardware, a hypervisor with an real-time operating system (RTOS), asymmetric multiprocessing (AMP) with an RTOS, or solutions within Linux like PREEMPT_RT that adds preemption and CPU isolation techniques to reduce worst-case latency without changing applications. The document reviews these approaches and notes that real-time remains an important area as Linux is increasingly used in embedded systems.
Kernel Memory Protection by an Insertable Hypervisor which has VM Introspec...Kuniyasu Suzaki
IWSEC2014(The 9th International Workshop on Security 弘前) で"Kernel Memory Protection by an Insertable Hypervisor which has VM Introspection and Stealth Breakpoints"
The document discusses microprocessors, RISC, and CISC architectures. It provides the following key points:
1. A microprocessor, also known as the CPU, is the central processing unit of computers and electronic devices that contains components like transistors to carry out instructions.
2. RISC architectures aim to simplify instruction sets to maximize efficiency through pipelining, using simple addressing modes and instruction formats with complex operations as sequences of simple instructions.
3. CISC architectures contain large, complex instruction sets ranging from simple to specialized to make efficient use of memory and simplify compiler development by mapping directly to high-level languages.
The document provides an overview of the Linux kernel, including its architecture, startup process, functionality, configuration, and compilation. It discusses the differences between micro and monolithic kernels. It also explains the Linux kernel architecture with user space and kernel space separated by a system call interface. Key aspects covered include process management, memory management, device management, and the kernel build system.
This document discusses real-time operating systems (RTOS). It defines RTOS as operating systems that are able to respond to inputs immediately within a specified time delay. It compares RTOS to general operating systems and discusses the types, characteristics, functions, and applications of RTOS. Examples of RTOS like VxWorks are provided. The key functions of an RTOS include task management, scheduling, resource allocation, and interrupt handling. RTOS are widely used in applications that require deterministic responses like avionics, medical devices, industrial automation, and more.
This presentations outlines the benefits that Colama brings with the implementation of a virtual computer lab in educational institutes. Colama, a product of Coriolis Technologies Pvt Ltd (http://coriolis.co.in/colama) offers an infrastructure to build a virtual computer labs.
This slides indicate an introduction on the definition of real time and RTOSes, then you can find information on introducing RT Linux approaches and comparing them with each other, then finally you can see a latency measurement test done by "Linutronix" in the slides
The document provides an introduction to operating systems and real-time operating systems (RTOS). It defines an operating system as software that manages computer resources and provides common services for programs. An RTOS is designed for systems where response time is critical. The document discusses the components, features and types of both operating systems and RTOS, including examples like VxWorks and QNX.
Linux PREEMPT_RT improves the preemptiveness of the Linux kernel by allowing preemption everywhere except when preemption is disabled or interrupts are disabled. This reduces latency from preemption, critical sections, and interrupts. However, non-deterministic external interrupt events and timing as well as interrupt collisions can still cause unpredictable latency. Tracing tools can help analyze latency but practical issues remain in fully guaranteeing hard real-time behavior.
This document provides an introduction to real-time systems and discusses approaches to making Linux a real-time operating system. It defines hard and soft real-time systems and explains why Linux is commonly used instead of dedicated real-time operating systems. The document then discusses two main solutions, PREEMPT_RT and Xenomai 3, which provide patches to make Linux meet timing constraints through different approaches. It also provides an overview of basic real-time concepts like scheduling algorithms, preemptive vs. non-preemptive scheduling, and interprocess communication.
The document discusses using electronic system level (ESL) design methodology to validate hardware/software functionality, performance, and power requirements above the register-transfer level (RTL). It describes how ESL transaction-level models can be reused at the RTL block level and system integration phases using emulation. ESL allows validating software integration earlier and reducing RTL verification effort by finding bugs earlier in the design cycle. The document also provides an example of using an ARM Cortex-A9 transaction-level platform for virtual prototyping and software integration.
The survey on real time operating systems (1)manojkumarsmks
This document discusses real-time operating systems (RTOS) for small microcontrollers and various examples. It covers topics like RTOS architecture, language support, services provided through APIs, and technical support needs. Examples discussed include uITRON and TOPPERS/FDMP RTOS specifications, MARUTI which is a hard real-time system, and eRTOS designed for wearable computers. The document compares different RTOS and concludes that RTOS have increasingly been used in small microcontrollers to enable software optimization, distribution, and synchronization.
The document discusses real-time operating systems for embedded systems. It describes that RTOS are necessary for systems with scheduling of multiple processes and devices. An RTOS kernel manages tasks, inter-task communication, memory allocation, timers and I/O devices. The document provides examples of creating tasks to blink an LED and print to USART ports, using a semaphore for synchronization between tasks. The tasks are run and output is seen on a Minicom terminal.
The document is a nursery catalog from Plant One On Me Nursery that lists information about butterfly bush varieties and chrysanthemum flowers. It provides a table with 9 varieties of butterfly bush, their colors, and their average heights. It also includes descriptions of Clara Curtis Chrysanthemum flowers noting their pink blooms from mid-summer to fall, height of 15-18 inches, and preference for full sun to partial shade. The document aims to inform customers about ornamental plant options.
The document discusses 3 ways to improve an AdWords campaign: managing search terms and negative keywords, improving account structure through proper organization of campaigns and ad groups, and optimizing bid modifiers for factors like location, device type, and time of day. It provides examples and tips for how to effectively implement negative keyword matching, avoid click bleed through better structure, and ensure bid modifiers are helping not hindering performance. The key message is that an AdWords campaign requires ongoing attention to structure, keywords, and user targeting to achieve the best results.
The document discusses real-time operating systems for networked embedded systems. It provides an example of a fire alarm system using sensors, controllers and a central server connected by low-bandwidth radio links. It then discusses the need for a collaborative action routing solution that is dynamic, auto-configurable and minimizes collisions. The document outlines features of real-time operating systems including scheduling, resource allocation, interrupt handling and targeting various processor architectures.
This document describes a protocol test generator that uses nested virtual machines and rollback mechanisms to perform exhaustive fuzz testing of protocol implementations. It proposes using a virtual test protocol to encapsulate test packets and control the target virtual machine. Special packets allow taking snapshots of the target VM state and rolling back to previous snapshots to repeatedly test protocol states with different fuzzed packets. The current prototype implements this approach with KVM and QEMU virtual machines to find bugs in TLS/SSL protocol implementations through fuzz testing of the handshake process.
* Know the reasons why various operating systems exist and how they are functioned for dedicated purposes
* Understand the basic concepts while building system software from scratch
• How can we benefit from cheap ARM boards and the related open source tools?
- Raspberry Pi & STM32F4-Discovery
The document discusses real-time operating systems (RTOS). It defines an RTOS as an OS intended to serve real-time application requests. It classifies RTOS as hard, firm, or soft based on adherence to deadlines. It describes RTOS architecture including tasks, synchronization, communication, memory management, and other kernel functions. It lists features such as multithreading, priorities, communication, and short latencies. Finally, it provides examples of widely used RTOS like QNX, RTLinux, VxWorks, and Windows CE.
Solving Real-Time Scheduling Problems With RT_PREEMPT and Deadline-Based Sche...peknap
In dealing with a real world problem of scheduling three classes of tasks – network packet forwarding, voice over IP and application level services for a home gateway device, the author found that mechanisms coming with vanilla Linux kernel are not enough. This talk will cover the unique real-time requirements for each task class, why moving softirq to process context with RT_PREEMPT patch is an important step in solving the problem and how a deadline based process scheduler would be a better solution than regular real-time scheduling classes.
Double-Take Software provides workload optimization solutions including disaster recovery, high availability, server migration, and management. It has over 19,000 customers including half of the Fortune 500. Solutions are hardware and storage agnostic and support migrations between physical and virtual environments with minimal downtime. Real-time replication allows migrations to complete within minutes.
This document discusses the challenges of real-time computing on Linux and potential solutions. Real-time means very low maximum latency, below 100 microseconds. While Linux was not designed for real-time, it is now used in many embedded systems. Options to address real-time include using separate hardware, a hypervisor with an real-time operating system (RTOS), asymmetric multiprocessing (AMP) with an RTOS, or solutions within Linux like PREEMPT_RT that adds preemption and CPU isolation techniques to reduce worst-case latency without changing applications. The document reviews these approaches and notes that real-time remains an important area as Linux is increasingly used in embedded systems.
Kernel Memory Protection by an Insertable Hypervisor which has VM Introspec...Kuniyasu Suzaki
IWSEC2014(The 9th International Workshop on Security 弘前) で"Kernel Memory Protection by an Insertable Hypervisor which has VM Introspection and Stealth Breakpoints"
The document discusses microprocessors, RISC, and CISC architectures. It provides the following key points:
1. A microprocessor, also known as the CPU, is the central processing unit of computers and electronic devices that contains components like transistors to carry out instructions.
2. RISC architectures aim to simplify instruction sets to maximize efficiency through pipelining, using simple addressing modes and instruction formats with complex operations as sequences of simple instructions.
3. CISC architectures contain large, complex instruction sets ranging from simple to specialized to make efficient use of memory and simplify compiler development by mapping directly to high-level languages.
The document provides an overview of the Linux kernel, including its architecture, startup process, functionality, configuration, and compilation. It discusses the differences between micro and monolithic kernels. It also explains the Linux kernel architecture with user space and kernel space separated by a system call interface. Key aspects covered include process management, memory management, device management, and the kernel build system.
This document discusses real-time operating systems (RTOS). It defines RTOS as operating systems that are able to respond to inputs immediately within a specified time delay. It compares RTOS to general operating systems and discusses the types, characteristics, functions, and applications of RTOS. Examples of RTOS like VxWorks are provided. The key functions of an RTOS include task management, scheduling, resource allocation, and interrupt handling. RTOS are widely used in applications that require deterministic responses like avionics, medical devices, industrial automation, and more.
This presentations outlines the benefits that Colama brings with the implementation of a virtual computer lab in educational institutes. Colama, a product of Coriolis Technologies Pvt Ltd (http://coriolis.co.in/colama) offers an infrastructure to build a virtual computer labs.
This slides indicate an introduction on the definition of real time and RTOSes, then you can find information on introducing RT Linux approaches and comparing them with each other, then finally you can see a latency measurement test done by "Linutronix" in the slides
The document provides an introduction to operating systems and real-time operating systems (RTOS). It defines an operating system as software that manages computer resources and provides common services for programs. An RTOS is designed for systems where response time is critical. The document discusses the components, features and types of both operating systems and RTOS, including examples like VxWorks and QNX.
Linux PREEMPT_RT improves the preemptiveness of the Linux kernel by allowing preemption everywhere except when preemption is disabled or interrupts are disabled. This reduces latency from preemption, critical sections, and interrupts. However, non-deterministic external interrupt events and timing as well as interrupt collisions can still cause unpredictable latency. Tracing tools can help analyze latency but practical issues remain in fully guaranteeing hard real-time behavior.
This document provides an introduction to real-time systems and discusses approaches to making Linux a real-time operating system. It defines hard and soft real-time systems and explains why Linux is commonly used instead of dedicated real-time operating systems. The document then discusses two main solutions, PREEMPT_RT and Xenomai 3, which provide patches to make Linux meet timing constraints through different approaches. It also provides an overview of basic real-time concepts like scheduling algorithms, preemptive vs. non-preemptive scheduling, and interprocess communication.
The document discusses using electronic system level (ESL) design methodology to validate hardware/software functionality, performance, and power requirements above the register-transfer level (RTL). It describes how ESL transaction-level models can be reused at the RTL block level and system integration phases using emulation. ESL allows validating software integration earlier and reducing RTL verification effort by finding bugs earlier in the design cycle. The document also provides an example of using an ARM Cortex-A9 transaction-level platform for virtual prototyping and software integration.
The survey on real time operating systems (1)manojkumarsmks
This document discusses real-time operating systems (RTOS) for small microcontrollers and various examples. It covers topics like RTOS architecture, language support, services provided through APIs, and technical support needs. Examples discussed include uITRON and TOPPERS/FDMP RTOS specifications, MARUTI which is a hard real-time system, and eRTOS designed for wearable computers. The document compares different RTOS and concludes that RTOS have increasingly been used in small microcontrollers to enable software optimization, distribution, and synchronization.
The document discusses real-time operating systems for embedded systems. It describes that RTOS are necessary for systems with scheduling of multiple processes and devices. An RTOS kernel manages tasks, inter-task communication, memory allocation, timers and I/O devices. The document provides examples of creating tasks to blink an LED and print to USART ports, using a semaphore for synchronization between tasks. The tasks are run and output is seen on a Minicom terminal.
The document is a nursery catalog from Plant One On Me Nursery that lists information about butterfly bush varieties and chrysanthemum flowers. It provides a table with 9 varieties of butterfly bush, their colors, and their average heights. It also includes descriptions of Clara Curtis Chrysanthemum flowers noting their pink blooms from mid-summer to fall, height of 15-18 inches, and preference for full sun to partial shade. The document aims to inform customers about ornamental plant options.
The document discusses 3 ways to improve an AdWords campaign: managing search terms and negative keywords, improving account structure through proper organization of campaigns and ad groups, and optimizing bid modifiers for factors like location, device type, and time of day. It provides examples and tips for how to effectively implement negative keyword matching, avoid click bleed through better structure, and ensure bid modifiers are helping not hindering performance. The key message is that an AdWords campaign requires ongoing attention to structure, keywords, and user targeting to achieve the best results.
Australian mobile usage is very high, with over half the population using smartphones and nearly 20% using tablets. Mobile devices have become an integral part of everyday life for Australians, who use their phones for a variety of tasks like taking photos, browsing the web, searching for information, emailing, and using apps. Australians also frequently use their mobile devices for short bursts of activity throughout the day and often have their phones with them while doing other activities like watching television or using another device.
This document provides an overview of the fast moving consumer goods (FMCG) retail market in India. Some key points:
- The FMCG sector is the 4th largest sector in India's economy and is growing at a double digit rate, expected to maintain high growth.
- It includes household care, personal care, and food and beverage products that are sold quickly and regularly.
- The market is large at over Rs. 85,000 crores but penetration levels and per capita consumption are still low, indicating growth potential.
- Rural India represents a major opportunity as rural consumers account for a large portion of the population and disposable income.
Activities involved in succession process 3John Johari
This document discusses transferring management of a family-owned business from one generation to the next. It emphasizes the importance of planning to help ensure a successful transition. There are four key plans needed: a business strategic plan, family strategic plan, succession plan, and estate plan. These plans can help balance family and business goals, choose a successor, and transfer ownership while minimizing taxes. Advance planning is crucial as many family businesses fail to survive across generations due to a lack of planning.
Lak12 - Leeds - Deriving Group Profiles from Social Media lydia-lau
1. The presentation discusses deriving group profiles from social media data to help design simulated learning environments.
2. An experimental study combined semantics and machine learning to profile groups based on their digital traces from a job interview domain.
3. Preliminary results found the group profiles could help training professionals identify learning needs, and domain concepts could augment learner models. However, improving profile quality and demographic data accuracy requires further work.
The document discusses creating a video with the message of recycling and caring for the Earth. The video aims to inform viewers about how recycling works and its benefits in an entertaining way, and to encourage others to participate. While creating the animation, the group had to overcome many challenges and learned that animation requires a major time commitment.
National Association of Healthcare Access Management Presentationmikemike09
This document discusses the importance of maintaining accurate patient identity records to ensure patient safety and quality of care. It notes that 8-12% of hospital records are duplicates, which can lead to delays, redundant tests, and medical errors. Poorly integrated systems, high staff turnover, and decentralized registration contribute to the problem. The impacts include registration delays, repeat tests, medication errors, and dissatisfied patients and physicians who lack confidence in the system. The document recommends educating staff, using technology like biometrics to simplify processes, and regularly analyzing reports to identify and resolve duplicate records and fraudulent activity.
This document discusses different stages of investing including putting money in savings accounts, beginning investing in low-risk stocks, systematic monthly investing, strategic portfolio management, and speculative investing. It also covers reasons for investing such as beating inflation, increasing wealth, the fun and challenge of investing, and diversifying risk. Finally, it outlines characteristics of stocks, different types of stocks, factors that influence stock prices, and short-term and long-term investment techniques.
The marketing plan is a highly detailedmohtar hasim
The document provides a tutorial on how to write a marketing plan in 6 parts: 1) Purpose and mission, 2) Situational analysis, 3) Marketing strategy and objectives, 4) Tactical programs, 5) Budgeting and implementation, and 6) Additional considerations. It describes what should be included in each part such as analyzing current products, markets, competitors, and finances in the situational analysis and identifying marketing strategies and objectives. The marketing plan is presented as a thorough document that analyzes the past and guides future marketing efforts.
Testing real-time Linux. What to test and how Chirag Jog
The document discusses testing of the real-time Linux kernel. It explains that real-time kernel testing focuses on functionality, performance, and latency. Key aspects to test include signal delivery latency, scheduling jitter, and context switch duration. Proper hardware setup and kernel configuration are important. Test cases should run as real-time processes and avoid page faults, disk I/O, and other sources of unpredictable latency when measuring real-time performance.
DEF CON 27 - ALI ISLAM and DAN REGALADO WEAPONIZING HYPERVISORSFelipe Prado
This document discusses using hypervisors to monitor devices for cyber attacks. It begins with discussing agent-less vs agent monitoring and then demonstrates setting up a development environment using a Zynq UltraScale+ MPSoC board with Xen hypervisor. It shows building a root filesystem, getting ARM syscalls, and using virtual machine introspection to monitor syscalls and memory. Various attack scenarios are demonstrated like shellcode execution and malware awareness. It concludes with recommendations for an end-to-end monitoring system and releasing the tools developed.
Monitorama 2015 talk by Brendan Gregg, Netflix. With our large and ever-changing cloud environment, it can be vital to debug instance-level performance quickly. There are many instance monitoring solutions, but few come close to meeting our requirements, so we've been building our own and open sourcing them. In this talk, I will discuss our real-world requirements for instance-level analysis and monitoring: not just the metrics and features we desire, but the methodologies we'd like to apply. I will also cover the new and novel solutions we have been developing ourselves to meet these needs and desires, which include use of advanced Linux performance technologies (eg, ftrace, perf_events), and on-demand self-service analysis (Vector).
This document discusses real-time operating system (RTOS) concepts. It defines real-time as responsiveness defined by external processes. An RTOS guarantees tasks will finish within time constraints. It explains characteristics like preemptive multitasking, prioritized processes, interrupt handling. The document also covers RTOS scheduling, dispatching, time specifications for tasks and interrupts. Common real-time applications are also listed like military, telecommunications, aviation and more.
The document discusses retooling offensive techniques in .NET for red teams. It proposes building modular code blocks and dynamic payloads that can be retooled on live systems to avoid detection. This involves leveraging existing system facilities and compiling code dynamically and in-memory using techniques like CodeDOM. The goals are to recon under the radar for longer, deliver payloads without being detected, and quickly retool for unknown systems. It explores options for live retooling like PowerShell, WMI, managed code, and COM/unmanaged code. The document also discusses building a managed execution toolkit called Typhoon CSaw that uses these techniques to achieve dynamic compilation, a REPL environment, removal of artifacts, and improved inter
1. FPGAs allow balancing computation between an embedded processor and custom application-specific data processing pipelines.
2. Offloading streaming data tasks to an FPGA data plane can meet performance needs by freeing the processor for other tasks.
3. An FPGA implementation combining an embedded processor control plane and custom data plane reduces costs and development time compared to separate chips.
Exploring the Final Frontier of Data Center Orchestration: Network Elements -...Puppet
The document discusses network element automation using Puppet. It provides context on the challenges of manual network configuration including lack of agility, reliability issues from errors, and time spent on basic tasks. Puppet can automate network elements similar to how it automates servers, reducing errors and improving speed/productivity. The Cisco Nexus platform and NXAPI enable programmatic access for automation using Puppet through technologies like onePK and LXC containers running on the switch.
Amazon EC2 provides a broad selection of instance types to accommodate a diverse mix of workloads. In this session, we provide an overview of the Amazon EC2 instance platform, key platform features, and the concept of instance generations. We dive into the current generation design choices of the different instance families, including General Purpose, Compute Optimized, Storage Optimized, Memory Optimized, and GPU instance. We also detail best practices and share performance tips for getting the most out of your Amazon EC2 instances.
The document discusses trusted computing and provides details on its architecture and uses. The trusted computing architecture uses a trusted platform module (TPM) to measure the boot process and software running on a device. It establishes a chain of trust from the hardware to the operating system and applications. While trusted computing aims to increase security and privacy, issues around its impact on privacy have prevented widespread adoption.
Know More About Rational Performance - Snehamoy KRoopa Nadkarni
Rational Performance Tester (RPT) is a tool for performance testing web applications. It can simulate thousands of virtual users to test an application's performance and scalability. RPT works with many web application frameworks and protocols. It combines access to protocol data with the ability to insert custom Java code, enabling advanced test scenarios. RPT uses a distributed architecture where test agents inject load from separate machines while the Eclipse workbench is used for test creation and analysis. Proper configuration of workbench and agent machines is important for optimizing test performance.
Rational Performance Tester (RPT) is a tool for performance testing web applications. It can simulate thousands of virtual users to test an application's performance and scalability. RPT works with many web technologies and protocols. It allows recording and playback of tests, monitoring of system resources, and real-time reporting of performance metrics. The presentation provided an overview of RPT's features and capabilities. It also included tips and best practices for creating tests, configuring agents and drivers, and optimizing performance.
1. The document discusses real-time programming in Java, including an overview of real-time systems, real-time operating systems, and challenges in real-time programming.
2. It describes the Real-Time Specification for Java (RTSJ), which aims to make Java suitable for real-time applications by adding features like priority-based scheduling, memory areas, and asynchronous event handling.
3. The document also discusses real-time garbage collection techniques and limitations, and the future of real-time Java with standards like RTSJ and Safety-Critical Java.
This document discusses real time operating systems for networked embedded systems. It provides an example of a fire alarm system with hundreds of sensors communicating over low bandwidth radio links to controllers and a central server. It outlines the challenges in ensuring sensor information is logged and appropriate action initiated in real time. The document then discusses real time operating systems, including scheduling algorithms like priority scheduling and clock driven scheduling. It covers features of RTOS like interrupt handling and resource allocation. Finally, it mentions specific RTOS like Linux, RTLinux, and the author's own rtker RTOS.
www.jwjobs.net
1. An embedded system is a dedicated computer system that performs specific tasks and is embedded as part of a complete device including hardware and software.
2. Main components of an embedded system include a microprocessor or microcontroller, memory, and input/output components. Common microprocessors include general purpose microprocessors, microcontrollers, digital signal processors, and application-specific integrated circuits.
3. Embedded software is programmed on read-only memory (ROM) or flash memory and provides the core functionality of the embedded system. Real-time operating systems also help manage tasks and system resources.
Production profiling what, why and how technical audience (3)RichardWarburton
Everyone wants to understand what their application is really doing in production, but this information is normally invisible to developers. Profilers tell you what code your application is running but few developers profile and mostly on their development environments.
Thankfully production profiling is now a practical reality that can help you solve and avoid performance problems. Profiling in development can be problematic because it’s rare that you have a realistic workload or performance test for your system. Even if you’ve got accurate perf tests maintaining these and validating that they represent production systems is hugely time consuming and hard. Not only that but often the hardware and operating system that you run in production are different from your development environment.
This pragmatic talk will help you understand the ins and outs of profiling in a production system. You’ll learn about different techniques and approaches that help you understand what’s really happening with your system. This helps you to solve new performance problems, regressions and undertake capacity planning exercises.
This document discusses Network Functions Virtualisation (NFV). It begins by acknowledging Bob Briscoe and others from BT. It then discusses using generic servers, storage, and switches instead of proprietary network appliances. NFV allows functions like firewalls and WAN acceleration to be deployed through software on commercial off-the-shelf hardware. This reduces costs and speeds up deployment compared to traditional dedicated hardware appliances. The document outlines a proof of concept testing NFV using a BRAS and CDN. It found the system could process over 3 million packets per second on a single server, equivalent to the throughput of existing BRAS equipment. An NFV Industry Specification Group is forming with over 150 participants from over 50 companies. It will work to
Watch the replay: http://cs.co/90028vTty
You have heard of NETCONF, YANG, Python, and REST. However, do you really understand what they can do for your business, network, and networking career?
Learn how you can create apps that automate operations, consume network telemetry, and control network resources with minimal programming experience.
Resources:
Watch the New Era of Networking playlist: http://cs.co/90058sI1U
Tommaso Cucinotta - Low-latency and power-efficient audio applications on Linuxlinuxlab_conf
Building Linux-based low-latency audio processing software for nowadays multi-core devices can be cumbersome. I’ll present some of our on-going research on the topic at the Real-Time Systems Lab of Scuola Superiore Sant’Anna, focusing on sound synthesis on Android where power-efficiency is a must.
The talk will provide basic background information on how the audio sub-system of Linux works, in terms of interactions between the Linux kernel and the ALSA sound architecture, including how user-space applications normally cope with low-latency requirements, touching briefly on design concepts behind the existence of the JACK low-latency framework. Then, a few concepts will be provided on the peculiarities of the Android audio processing pipeline, crossing the concepts with the due complications arising from the world of mobile and power-efficient devices. Throughout the talk, I’ll touch upon concepts behind our research efforts on the topic, describing how properly designed real-time CPU scheduling strategies can make a difference in what is achievable in this area.
Similar to Lesson 1 introduction to real time (20)
Tommaso Cucinotta - Low-latency and power-efficient audio applications on Linux
Lesson 1 introduction to real time
1. Lesson 1
Introduction to Real Time
TOPICS
A. What is Real-Time?
B. RT Host
C. RT Target
ni.com/training
2. A. What is Real Time?
Real Time Response: The ability to reliably
and, without fail, respond to an event or
perform an operation, within a guaranteed
time period.
ni.com/training
3. Real-Time Terms
Loop Cycle Time
• Execution time of one cycle of a loop
Jitter
• Variation from the desired loop cycle time
Determinism
• Measure of jitter magnitude
Latency
• Time required to respond to an event, or the time between
input and output
ni.com/training
4. Real-Time Terms (continued)
Embedded
• A computer system that is a component within a larger
system. Embedded systems usually operate headlessly.
ni.com/training
5. Maximum Jitter Jitter Range
Desired Loop Time Maximum
Jitter
1
Loop Iteration
2
3
4
5
Loop Time (seconds)
ni.com/training
6. Operating Systems
• Processor time is shared between programs
• Operating systems can preempt high priority VIs
− Many programs run in the background—screen savers, disk
utilities, virus software, and so on
− It must service interrupts—keyboard, mouse, Ethernet, and so on
• Cannot guarantee determinism—that is, it is a
non-deterministic system
ni.com/training
7. Real-Time Operating Systems
• Ensure that high-priority tasks execute first
• Do not require user input from peripherals
LabVIEW Real-Time Module executes VIs on the following:
• Hardware targets running the Ardence Phar Lap
Embedded Tool Suite (ETS)
• Computers running Wind River VxWorks
This course focuses on the ETS platform
ni.com/training
8. Selecting an Operating System
General
Real-
Purpose Closed loop
Data acquisition Time OS
OS control
Time-critical
Offline analysis
decisions
Data presentation Extended run time
Stand alone
operation
Increased
reliability
ni.com/training
10. LabVIEW Real-Time System Using ETS
Host Computer RT Target
Develop Execute
Download
ni.com/training
11. Discussion Exercise 1-1: Project
Specification Document
Read and discuss the Project Specification document and
determine if real time is necessary for this application.
GOAL
ni.com/training
13. C. Real-Time Targets
Desktop PCs
Determinism for PCI systems
NI RT PXI Embedded Controllers
High speed, high channel density, I/O variety
NI RT Compact FieldPoint
Small footprint, harsh environments
LabVIEW
Real-Time NI Compact Vision System
Compact and distributed machine vision
NI CompactRIO
Reconfigurable Embedded System
ni.com/training
14. Real-Time Hardware Configuration
Desktop PCs
Determinism for PCI systems
NI RT PXI Embedded Controllers
High speed, high channel density, I/O variety
NI RT Compact FieldPoint
Host-Target
Small footprint, harsh environments
NI RT Compact Vision System
Compact and distributed machine vision
NI CompactRIO
Reconfigurable Embedded System
ni.com/training
15. RT Target – Host-Target Configuration
NI RT Series PXI Controller—Ideal for
high-speed, high channel count
acquisition
NI cRIO Series—Embedded system with
real-time controller, reconfigurable FPGA
chassis, and industrial I/O modules
NI RT Series Compact FieldPoint
Controller—Ideal for distributed real-time
I/O applications
NI 1450 Series Compact Vision System—
Acquires, processes, and displays
images for IEEE1394 cameras
Desktop PCs as RT Targets—Ideal for low
cost implementation
ni.com/training
17. RT Target—cFP Controller
Watchdog timer
Removable CompactFlash memory
(cFP-2x20 only)
Onboard static memory
Dedicated processor
User-defined DIP switches and LEDs
Serial port
Backup power supply connection
Ethernet port
ni.com/training
18. Target Platform Comparison
PXI cRIO cFP PC
Loop Speed Best Better Good Best
I/O Count High High High Low
Rugged Better Best Best —
Scalability Best Better Good Better
Third-party RT HW Yes Yes No Yes
Distributed Better Best Best Good
ni.com/training
19. Summary – Matching Quiz
1. Jitter A. How reliably a system responds to events
or performs operations within a given time
2. Determinism limit
B. Time taken to execute one cycle of a loop
3. Embedded
C. Variation of loop cycle time from the
4. Real time desired loop cycle time
D. Computer system that is typically a
5. Loop cycle component within a larger system
time E. The ability to reliably, and without
fail, respond to an event or perform an
operation within a guaranteed time period
ni.com/training
Editor's Notes
IntroductionThis lesson introduces real-time concepts such as real time, determinism, and jitter. This lesson also discusses the components of a real-time system, including the host and the target. Use the Getting Started with the LabVIEW Real-Time Module manual to get started with the LabVIEW Real-Time Module quickly. To view the manual, select Help»Search the LabVIEW Help in LabVIEW to open the LabVIEW Help. Select the Contents tab, expand the Real-Time Module book in the table of contents, and open the Related Documentation topic. Click the Getting Started with the LabVIEW Real-Time Module link to open the document in your Web browser.
A. What is Real Time?The LabVIEW Real-Time Module combines LabVIEW graphical programming with the power of a real-time operating system, enabling you to build deterministic real-time applications. A misconception about real time is that it means quick. More accurately, real time means in-time. In other words, a real-time system ensures that responses occur in time, or on time. With general purpose operating systems, you cannot ensure that a response occurs within any given time period, and calculations might finish much later or earlier than you expect them to.For a system to be considered real time, all parts of it must be real time. For example, an application that runs in a real-time operating system may not behave with real-time characteristics. The application may rely on something that does not behave in real time, which causes the application to not behave in real time.Terms that frequently describe real-time systems are deterministic, loop cycle time, jitter, and embedded. Learning more about these terms helps you understand real time.
NoteThe puzzle symbol shown above indicates that you must complete this exercise for the course project. Look for this symbol on all course project exercises. Exercises are located at the end of each lesson.