This document discusses the Plan 9 operating system and network programming in Plan 9. It provides an overview of Plan 9's origins from UNIX and its networking APIs and model, including the use of file descriptors to represent network connections. It also demonstrates examples of echo clients and servers implemented using these networking APIs.
We build tribes. We help find, profile and activite your customer base into a tribe so you grow your customers and make more money from each of them. Simply put we help you win friends and influence people.
This document discusses the Plan 9 operating system and network programming in Plan 9. It provides an overview of Plan 9's origins from UNIX and its networking APIs and model, including the use of file descriptors to represent network connections. It also demonstrates examples of echo clients and servers implemented using these networking APIs.
We build tribes. We help find, profile and activite your customer base into a tribe so you grow your customers and make more money from each of them. Simply put we help you win friends and influence people.
This document discusses optimizations for TCP/IP networking performance on multicore systems. It describes several inefficiencies in the Linux kernel TCP/IP stack related to shared resources between cores, broken data locality, and per-packet processing overhead. It then introduces mTCP, a user-level TCP/IP stack that addresses these issues through a thread model with pairwise threading, batch packet processing from I/O to applications, and a BSD-like socket API. mTCP achieves a 2.35x performance improvement over the kernel TCP/IP stack on a web server workload.
This document discusses different methods for virtualizing I/O in virtual machines. It covers virtual I/O approaches like virtio, PCI passthrough, and SR-IOV. It also explains the role of the VMM/hypervisor in managing I/O between VMs and physical devices using techniques like VT-d, Open vSwitch, and single root I/O virtualization. Finally, it discusses emerging standards for virtual switching like virtual Ethernet bridging.
The document discusses the performance of three SPEC CPU2006 benchmarks - 483.xalancbmk, 462.libquantum, and 471.omnetpp - under different last-level cache (LLC) configurations and when subjected to LLC cache interference from a background workload. Key findings include reduced performance for the benchmarks when run with a smaller LLC size or when interfered with by a LLC jammer workload, but maintained performance when QoS techniques were applied to isolate the benchmark workload in the LLC.
Infinite Debian - Platform for mass-producing system every secondTaisuke Yamada
Starting from standard install and various "Debian internal" for mass-installation system, the talk goes on to describe generic "instant system generation" which shortens turnaround time from 10s of minutes to seconds. All based on Debian.
Prepared for kickstart meetup of FukuokaDebian.