心开天籁

小圆棒是燃料电池？？？

摘自kerneltrap.org
JA: How can a person tell if their hardware supports kvm?
Avi Kivity: You can easily tell if your processor supports hardware extensions by running the command
$ egrep ‘^flags.*(vmx|svm)’ /proc/cpuinfo
If there’s any output at all, your processor supports kvm. Unfortunately, some early laptops that support kvm have VT extensions disabled in the BIOS, so a BIOS upgrade is required. There is also a comprehensive list on the Xen site, http://wiki.xensource.com/xenwiki/HVM_Compatible_Processors.

俺自己花钱买的第一台笔记本，2000年初，原配64M内存，升级为128，又买了一个10M的PCMCIA网卡，全价正好是20000元整人民的币。就是俺LP（当时还是女盆友）拎着两万的现金买地。
介台笔记本陪俺度过了早年的青葱岁月，陪俺在温暖的北图阅览室里睡觉，陪俺在酷热的出租房里写程序，陪俺在东北老家给俺爹妈亲戚朋友演示啥叫高科技。。。。。。在她身上俺装过Win98，W2K，各种版本的Linux。4年前升级了内存到256M（只能识别192M），3年前升级了硬盘（把10G摘下来放到移动硬盘盒里，换60G），两年前升级了无线网卡。即便这几年速度她的行动速度实在太慢了，也被我装上了SVN来做版本控制。
终于在去年被apple powerbook接班。只是测试新的投影系统才开过那么两三次。
直到昨天，俺Desktop PC的Ubuntu在unrar一个4G的xbox iso之后没有响应，在俺试图用俺的华硕
ssh login到linux，启动的时候发现硬盘不认识了。俺大惊失色，担心60G的硬盘千万不要出什么问题。7年的笔记本不值什么钱，硬盘里的数据倒是无价之宝。于是拆下硬盘，换到硬盘盒里，发现硬盘好好的，
把原配的10G硬盘再放到笔记本里还是不认识，知道盛宴总有散去的时候，电脑也该退休了。
相信不是大毛病，只是不值得修了。整理原配的电源，驱动光盘说明书等等丢进角落里的纸箱子。

哈哈哈哈

Linux: The Completely Fair Scheduler
April 18, 2007 – 5:51am
Submitted by Jeremy on April 18, 2007 – 5:51am.
Linux news
Ingo Molnar [interview] released a new patchset titled the “Modular Scheduler Core and Completely Fair Scheduler”. He explained, “this project is a complete rewrite of the Linux task scheduler. My goal is to address various feature requests and to fix deficiencies in the vanilla scheduler that were suggested/found in the past few years, both for desktop scheduling and for server scheduling workloads.” The patchset introduces Scheduling Classes, “an extensible hierarchy of scheduler modules. These modules encapsulate scheduling policy details and are handled by the scheduler core without the core code assuming about them too much.” It also includes sched_fair.c with an implementation of the CFS desktop scheduler, “a replacement for the vanilla scheduler’s SCHED_OTHER interactivity code,” about which Ingo noted, “I’d like to give credit to Con Kolivas [interview] for the general approach here: he has proven via RSDL/SD that ‘fair scheduling’ is possible and that it results in better desktop scheduling. Kudos Con!”
Regarding the actual implementation, Ingo explained, “CFS’s design is quite radical: it does not use runqueues, it uses a time-ordered rbtree to build a ‘timeline’ of future task execution, and thus has no ‘array switch’ artifacts (by which both the vanilla scheduler and RSDL/SD are affected). CFS uses nanosecond granularity accounting and does not rely on any jiffies or other HZ detail. Thus the CFS scheduler has no notion of ‘timeslices’ and has no heuristics whatsoever. There is only one central tunable, /proc/sys/kernel/sched_granularity_ns, which can be used to tune the scheduler from ‘desktop’ (low latencies) to ’server’ (good batching) workloads.” He went on to note, “due to its design, the CFS scheduler is not prone to any of the ‘attacks’ that exist today against the heuristics of the stock scheduler”.
During the followup discussion, Ingo explained that he wrote the 100K patch in 62 hours. In response to concerns that his efforts had not been discussed first on the Linux Kernel Mailing List, Ingo explained, “I prefer such early releases to lkml _alot_ more than any private review process. I released the CFS code about 6 hours after i thought ‘okay, this looks pretty good” and i spent those final 6 hours on testing it (making sure it doesnt blow up on your box, etc.), in the final 2 hours i showed it to two folks i could reach on IRC (Arjan and Thomas) and on various finishing touches.” He went on to add, “the ‘design consultation’ phase you are talking about is _NOW_! ” Later in the discussion that touched on egos, Linux creator Linus Torvalds noted, “one of the most motivating things there *is* in open source is ‘personal pride’,” going on to add, “it’s a really good thing, and it means that if somebody shows that your code is flawed in some way (by, for example, making a patch that people claim gets better behaviour or numbers), any *good* programmer that actually cares about his code will obviously suddenly be very motivated to out-do the out-doer!”

哪位泡网好心人以 X X 的名义给我发来的慰问信，附带joost的邀请。一个程序生成的url然后点进去变成 www.joost.com/download/ 不明白这样的下载和直接从首页点joost beta进来有什么区别下载，安装，sign up，sign in，点channel，点节目我的网速是1MADSL，偶尔有点卡，相对分辨率来说我觉得可以接受我是听说里面有1小时长度的NG授权节目去的，没找到在哪个频道今天有点晚了先不试改天用我的苹果电脑下载个MAC版的试试看多谢 X X
RedRox你试试直接download的能用不？不能用我给你发邀请
[update]joost目前还只支持MAC/Intel

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