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.: C'est un programmateur :.squid pdnsd tcmalloc opendns dnscrypt vmware optimize reiserfs geoip iptables openvpn programming bullshitlie tc linux admin golang erlang
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.: C'est un programmateur :. | bullshitlie.blogspot.com Reviews
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.: C'est un programmateur :.: Linux内核复杂度的主要来源
http://www.bullshitlie.blogspot.com/2012/11/linux_8.html
C'est un programmateur :. Techniques / Tips / Tricks. 最近又重新翻看ULK3，有一些体会，记录于下：. 从单核处理器(UP)的角度来说，内核设计是比较容易理解的；一旦涉及到多核（SMP)，复杂度指数级提高，研读内核困难急剧提升。 包括多核处理器的同步、互斥、内存屏障问题。 如per-cpu page frame cache优化分配、适应TLB的连续内存分配。 65292;以及磁盘，于是，引入了cache；但是cache的造价非常高，因此必然的结果就是，程序必须对cache优化使用（编程复杂度提高，算法优化）。 2 单核CPU频率的提升越来越困难，CPU厂家通过SMP的方式，保证摩尔定律的继续有效；由此而带来的CPU之间如何同步，是一个大问题。 3 CPU的多级流水线以及分支预测技术，使得指令执行顺序并不会按照程序流程，而是CPU优化的方式乱序执行。 65288;参照《计算机架构：一种量化方法》）. Int 1- - - - - - -iret. Int 2- - iret. Q: 多核下如何实现原子操作？(锁的具体实现）. A: 因为连续的物理内存的...
.: C'est un programmateur :.: TLPI读书笔记(4) -- write()/fwrite()
http://www.bullshitlie.blogspot.com/2013/02/tlpi4-stdiounistd.html
C'est un programmateur :. Techniques / Tips / Tricks. 问： stdio.h 的 fwrite() 和 unistd.h的write() 区别在什么地方？ 1 fwrite() 是libc的函数， write()是系统调用。 3 fwrite() 是带缓存的write()，不会立即调用write()， 通过setvbuf()函数可以控制缓存大小。 4 fwrite() 存在的一个重要意义，是减少了系统调用的次数。-. 65288;PS: 系统调用成本很高, 见 http:/ blog.tsunanet.net/2010/11/how-long-does-it-take-to-make-context.html. Intel 5150: 4300ns/context switch. Intel E5440: 3600ns/context switch. Intel E5520: 4500ns/context switch. Intel X5550: 3000ns/context switch. Void); / 系统级的fsync(). Pgpool h...
.: C'est un programmateur :.: TLPI读书笔记(3) -- pthread_once()
http://www.bullshitlie.blogspot.com/2012/12/tlpi3-pthreadonce.html
C'est un programmateur :. Techniques / Tips / Tricks. TLPI读书笔记(3) - pthread once(). The main reason for the existence of pthread once()is that in early versions of Pthreads, it was not possible to statically initialize a mutex. Man Page 中：. 以前有人问到过这个问题， 正如TLPI书中所说，pthread once()的存在是一个历史原因，简单来说，就是：. Mtx = PTHREAD MUTEX INITIALIZER. 这个静态初始化的方式在以前是没有的，如果有，自然可以用mutex模拟出来一次性初始化，例如 :. InitMtx = PTHREAD MUTEX INITIALIZER; static. Bool isInitialized = FALSE. 但是毕竟这样做比较麻烦， pthread once()一句话就能搞定。 215;××&#...Int err...
.: C'est un programmateur :.: TLPI读书笔记 (1) -- waitpid()
http://www.bullshitlie.blogspot.com/2012/11/lpi-1.html
C'est un programmateur :. Techniques / Tips / Tricks. TLPI读书笔记 (1) - waitpid(). The Linux Programming Interface: A Linux and UNIX System Programming Handbook. Http:/ www.amazon.com/Linux-Programming-Interface-System-Handbook/dp/1593272200. Chapter 26. Monitoring Child Processes. 几个wait函数的差别, wait(), waitpid(),waitid(), wait3(), wait4(). Wait()很原始， 很多事情不能做，例如:. 1 如果有如干个children，wait不能专等待其中一个。 3 wait() 只能在process terminated之后才能被观察到，不能观察到SIGSTOP,SIGTTIN等让进程STOP的信号。 1 exit(EXIT XXX) or exit() 和waitpid是一对好基友.
.: C'est un programmateur :.: IPC技术出现的年代整理
http://www.bullshitlie.blogspot.com/2013/09/ipc.html
C'est un programmateur :. Techniques / Tips / Tricks. 1973年， ken thompson. 在unix中实现，最初由数学家 Douglas McIlroy. 1983年首次出现于4.2BSD系统，直到1989年才免于版权保护。 2000年在freebsd 4.1中出现。 2002年在linux 2.5.44中出现。 订阅： 帖子评论 (Atom). 工具 1 https:/ github.com/xtaci/kcptun 2. https:/ www.inet.no/dante/ 安装 下载kcptun服务器: wget https:/ github.com/xtaci/kcptun/release. 工具 1 https:/ github.com/xtaci/kcptun 2. https:/ www.inet.no/dante/ 安装 下载kcptun服务器: wget https:/ github.com/xtaci/kcptun/release. Linux Advanced Routing and Traffic Control.
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goroutine背后的系统知识 | sizeof(void)
http://www.sizeofvoid.net/goroutine-under-the-hood
Zhennan's technical notes and thoughts. Skip to primary content. 2 并发与并行 (Concurrency and Parallelism). 系统调用都提供什么功能呢 用操作系统的名字加上对应的中断编号到谷歌上一查就可以得到完整的列表 ( Windows. 如果超出此协议的功能无法自己实现，那我们就说该操作系统不支持该功能，举个例子，Linux在2.6之前是不支持多线程的，无论如何在程序里模拟，我们都无法做出多个可以同时运行的并符合POSIX 1003.1c语义标准的调度单元。 可是，我们写程序并不需要去调用中断或是SYSCALL指令，这是因为操作系统提供了一层封装，在Windows上，它是NTDLL.DLL，也就是常说的Native API，我们不但不需要去直接调用INT 2E或SYSCALL，准确的说，我们不能直接去调用INT 2E或SYSCALL，因为Windows并没有公开其调用规范，直接使用INT 2E或SYSCALL无法保证未来的兼容性。 2 并发与并行 (Concurrency and Parallelism). 2) 多核...
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Bullshit level analysis
The real page rank of a business web page. It doesn't matter that you. Present your vision of growing in a successful business team. Or heal people using the most recent technologies and medicines. Or guarantee the cheapest prices of the newest models for your customers. Or simply sell the best crabs in the world. Your website needs sufficient amount of bullshit. Click here to measure the bullshit level of any page on the web! Bullshit level - the real page rank of a business web page - visits:425867.
Bullshit: A Lexicon
Election 2016 bullshit blog. An irreverent lexicon of the seemingly infinite ways we call bullshit, written by a McSweeney's columnist and etymologist, illustrated by a New Yorker-contributing cartoonist. Sign me up for news about books, authors, and more. Sign me up for news about Mark Peters Phd. Sign me up for news about books, authors, and more from Penguin Random House. By clicking Subscribe, I acknowledge that I have read and agree to Penguin Random House's Privacy Policy. And Terms of Use.
bullshitlick.com at Directnic
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.: C'est un programmateur :.
C'est un programmateur :. Techniques / Tips / Tricks. 1973年， ken thompson. 在unix中实现，最初由数学家 Douglas McIlroy. 1983年首次出现于4.2BSD系统，直到1989年才免于版权保护。 2000年在freebsd 4.1中出现。 2002年在linux 2.5.44中出现。 Http:/ lxr.linux.no/linux-old v1.0/kernel/mktime.c. 10 * This isn't the library routine, it is only used in the kernel. 11 * as such, we don't care about years 1970 etc, but assume everything. 12 * is ok. Similarly, TZ etc is happily ignored. We just do everything. 14 * routines (although I think minix times is public).
BullshitLife's blog - Don't be shy .. Be bad. - Skyrock.com
More options ▼. Subscribe to my blog. Created: 08/07/2015 at 3:38 PM. Updated: 03/04/2016 at 11:58 AM. Don't be shy . Be bad. Chris Brown - Surnom : Breezy - 24 yo. Gentil - Généreux - Possessif - Jaloux - Protecteur - Lunatique- Doux. Il sort avec Rihanna. C'est un mec à meuf. Passé : On le soupçonne d'avoir tué celui qui baisé avec Rihanna. Justin Bieber - Surnom : Bizzle - 21 ans. Protecteur - Jaloux - Possessif - Attentionné - Lunatique - Violent - Doux. Il sort avec Selena mais ne l'aime pas. Don't ...
Penn & Teller: Bullshit!
Penn and Teller: Bullshit! Links to free episodes. Wednesday, October 11, 2006. Aims to debunk an array of metaphysical, supernatural, and popular misconceptions and to apply critical thinking and scientific skepticism to these issues. Sometimes some episodes are available on social video sharing sites like YouTube or Dailymotion (Click on the links below). 1 Talking to the Dead. 4 End of the World. 5 Second Hand Smoke/Baby Bullshit. 6 Sex, Sex, Sex. 7 Feng Shui / Bottled Water. 16 The Business of Love.
Bullshit London | A very fun walking tour | Home
BullshitLOVE's blog - ●◦ вuʟʟsнiтʟovᴇ * ᘚ - Skyrock.com
9679;◦ вuʟʟsнiтʟovᴇ * ᘚ. 25/10/2010 at 5:39 AM. 13/12/2010 at 4:01 AM. Subscribe to my blog! Posted on Monday, 25 October 2010 at 6:25 AM. Edited on Monday, 13 December 2010 at 4:02 AM. Post to my blog. Here you are free.
