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WalB: A Fast and Low Latency Backup System for Block Devices Open Source Summit Japan 2017 Kota Uchida June 1, 2017 1 2 About me ▌Kota Uchida ▌SRE team at Cybozu, Inc. ▌A WalB developer 3 About Cybozu ▌A large cloud service vendor in Japan. ▌Largest market shares in field of collaborative software. ▌We serve web applications on our own cloud platform.  kintone: a low-code business app platform 

Embedded Linux Conference 2017 Embedded Linux size reduction techniques Michael Opdenacker free electrons [email protected] free electrons - Embedded Linux, kernel, drivers - Development, consulting, training and support. http://free-electrons.com 1/1 Michael Opdenacker ▶ Michael Opdenacker ▶ Founder and Embedded Linux engineer at free electrons ▶ Embedded Linux expertise ▶ Dev

VT-d Posted Interrupts Feng Wu, Jun Nakajima <Speaker> Intel Corporation 2 Agenda • Motivation • Difference btw CPU-based and VT-d Posted Interrupts • Architecture • Implementation Details • Performance • Summary 3 • Interrupt virtualization efficiency • Interrupt migration complexity • Big requirement of host vector for different assigned devices Motivation 4 CPU-based Posted-Interrupt in Xen VCP

The DRM/KMS subsystem from a newbie’s point of view Free Electrons. Kernel, drivers and embedded Linux development, consulting, training and support. http://free-electrons.com 1/49 Boris Brezillon I Embedded Linux engineer and trainer at Free Electrons I Embedded Linux development: kernel and driver development, system integration, boot time and power consumption optimization, consulting, etc. I E

Satoru Moriya <[email protected]> Linux Technology Center Yokohama Research Lab. Hitachi, Ltd Copyright (c) 2013 Hitachi LTD., Systems Development Lab. All right reserved Reducing Memory Access Latency Copyright (c) 2013 Hitachi LTD., Systems Development Lab. All right reserved 2 Contents 1. Introduction 2. Issues 3. solution Copyright (c) 2013 Hitachi LTD., Systems Development Lab. All

Fusion-io Confidential—Copyright © 2013 Fusion-io, Inc. All rights reserved. Fusion-io Confidential—Copyright © 2013 Fusion-io, Inc. All rights reserved. High Performance I/O with NUMA Systems in Linux Lance Shelton How prevalent is NUMA? ▸ All major vendors • HP, Dell, IBM, Cisco, SuperMicro, Hitachi, etc. ▸ As small as 1U ▸ 2, 4, and 8 socket systems ▸ 2 to 10 cores per socket ▸ Number of cores

Linux Kernel Maintainers Greg Kroah-Hartman [email protected] Why are they so grumpy? What you can do to avoid this. What maintainers owe you. 2.6.20 to 2.6.24­rc8 2,833 developers 373 companies Kernel releases 3.0.0 – 3.4.0 May 2011 – May 2012 5.79 changes per hour 2.6.20 to 2.6.24­rc8 Kernel releases 3.0.0 – 3.4.0 May 2011 – May 2012 7.21 changes per hour 3.4.0 release 2.6.20 to 2.6.24­r

Copyright 2012 FUJITSU LIMITED Evaluation of CPU cgroup Jun 7th, 2012 Taku Izumi Fujitsu Limited LinuxCon Japan 2012 Table of Contents  Outline of CPU cgroup  Evaluation of CFS bandwidth control  CPU bandwidth control of KVM guests Copyright 2012 FUJITSU LIMITED 1 Motivation  Fujitsu sells cloud computing service for mission critical customers. In that service QoS/accounting is very important

Introduction to Tizen and Tizen Mobile Architecture Seokjae Jeong, Samsung Electronics 2 Agenda Tizen Introduction Tizen Architecture Overview Tizen Core Services 3 Tizen Introduction 4 What is Tizen*? (Pronounced Tie Zen) NEW Tizen* combines the communities and the best technologies under one unified environment Strong developer community Broad service provider support Tizen* is a trademark of th

Android RenderScript on LLVM Shih-wei Liao [email protected] Linux Foundation: Collab-Summit, April 7, 2011 Outline Overview of RenderScript (what, why, how, ...) Components Offline Compiler Online JIT Compiler RenderScript Runtime Put Everything Together: Producing a .apk: HelloCompute Example Running the .apk: Fast launch time & On-device linking Conclusions What is RenderScript? It is the future