中国Linux内核开发者大会 #2

2007.10.13 北京 清华大学清华园FIT楼

第一场
主题:ACPI in Linux - Myths vs Reality
主讲人: Len Brown(He is a Principal Engineer with Intel's Open Source Technology Center.
At Intel over 10-years, he's worked on operating systems, performance tuning, 
and new hardware bring-up on supercomputers, servers, and network
processors. Previously, Len spent 5-years at Sun Microsystems porting
kernels, bringing up new systems, and tuning performance. Earlier he
spent several years on VLSI architecture and network performance analysis at AT&T
Bell Laboratories. Len has an MSEE in Computer Engineering from Carnegie
Mellon University and a BSEE from Tufts University. He works from his
Home near Boston.)
演讲内容:
Major Linux distributors have been shipping ACPI in
Linux for several years, yet mis-perceptions about ACPI
persist in the Linux community. This talk addresses
the most common myths about ACPI in Linux.

第二场
主题:走入Linux内核
主讲人: 陈莉君教授(西安邮电学院教师,1998年底进入Linux世界,带领96、97级学生进行Linux内核分析。
曾经出版过《Linxu操作系统内核分析(内核2.0)》、《深入分析Linux源代码(内核2.4)》、《Linux操作系统
原理与应用》,翻译的书籍有《深入理解Linux内核》、《Linux技术手册》、《Linux内核编程》、《Linux内核设计
与实现》,参考网站: 内核之旅http://www.kerneltravel.net/)
演讲内容:
曾穿越于Linux内核2.0~2.6,并没有熟悉所有的代码,但在Linux内核这样一个庞大的森林面前,几经周折,
找到了那个入口,并尽力穿过主要岔路口。本场主讲嘉宾将分享自己在Linux内核分析方面的经验和体会。

第三场
主题:Linux文件预读算法
主讲人: 吴峰光(吴峰光是中国科学技术大学自动化系的博士生。他在1998年开始学习Linux,继而尝试为同学
	们提供一些网络服务。其中最受关注的是PXE网络启动(knoppix/rip)与安装(debian/ubuntu/...)服务
	和高速视频下载服务。为了优化服务器的性能,他开始尝试改进Linux kernel,并最终重写了内核的文件预
	读部分,并向Linux内核提交代码,他提交的Linux文件预读算法代码已经被Linux官方组织正是接纳。)
演讲内容:
磁盘IO性能的发展远远滞后于CPU和内存,因而成为现代计算机系统的一个主要瓶颈。预读(readahead/prefetching)
可以有效的减少磁盘的寻道次数和应用程序的IO等待时间,是改进磁盘读IO性能的重要优化手段之一。我们重写了Linux内核
中的预读算法,改进了其数据结构和算法。以更清晰的代码,实现了对更多读取模式的支持,包括异步/非阻塞IO,
多线程交织IO,顺序随机混合IO,大规模并发IO,等等。 该算法可能的应用领域包括一些数据库应用,NFS/VOD/HTTP文件
服务,多线程/多媒体应用, 科学及工程计算等等。所述改进将会出现在Linux 2.6.23及其后续版本中。

第四场
主题:Kernel-mode video driver for Linux
主讲人: Jesse Barness(Jesse is a long time Linux and open source contributor. He is perhaps
best known for his role as Linux platform maintainer for SGI's Altix
line of Itanium based computers, in which he contributed significantly
to Linux scalability efforts, APIs for driver optimization, and new
userspace interfaces to allow user level drivers like X to be easily
ported to exotic platforms.
Jesse currently works at Intel's Open source Technology Center (OTC),
where he collaborates with other OTC developers on developing software
and drivers for Intel's graphics chips and platform architecture.
Current tasks include improve graphics on Linux, reducing power
consumption, and working on platform architecture for future Intel
Products)
演讲内容:
This talk will focus on the Linux graphics space, providing an overview
of the current state of affairs, and the author's efforts to improve
them. We'll cover, in-depth, attempts to redesign the kernel's
graphics subsystem to improve user's suspend/resume, panic, and
graphics configuration experience. This will include an overview of
the current pieces of the graphics puzzle ( e.g. kernel DRM, fb layer,
vgacon, X server, etc.), how they fit together (or not), and what can
be done to make them play together nicely (like centralizing important
functions in kernel space), with an eye toward the DRM modesetting
tree, which includes significant new kernel functionality and userspace
APIs to take advantage of it. Particular attention will be paid to
initial graphics discovery and configuration, modesetting, and memory
management。

第五场
主题:Living Rules in Kernel Community
主讲人: Bryan Wu 伍鹏(现为美国模拟器件公司Blackfin Linux Team的产品应用工程师。他一直活跃在嵌入式
	Linux开发的领域。当前,他是Blackfin体系架构在Linux内核社区的maintainer。负责内核开发,
	blackfin-git tree维护,以及其他开源项目的工作。在2.6.22稳定内核中已经正式加入了对Blackfin体系
	架构的支持。)
演讲内容:
1. LKML introduction
2. Patch Living rules
3. Blackfin uClinux kernel management
4. Conclusion and reference

第六场
主题:如何促进中国开发者参与Linux内核开发
主讲人: 李阳(毕业于北京大学计算机系。李阳是飞思卡尔半导体的资深软件工程师,拥有7年Linux相关开发的经验。
	目前主要从事PowerPC嵌入式Linux系统移植和驱动程序开发,并积极向Linux内核提交代码。最近发起并组织
	内核开发文档的翻译工作,并建立zh-kernel.org内核开发者中文社区,以帮助更多华人参与到Linux内核开发
	和维护中。)
演讲内容:
通过分析和讨论Linux内核开发目前的现状,和中国Linux相关开发的情况。阐述参与主流内核开发的重要性。并且提
出作为最终用户,相关企业和开源社区为此目标可以做出的尝试。简要介绍目前zh-kernel社区正在进行的文档翻译
工作,和对未来的展望。

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