[B! linux] mxgã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

mxg id:mxg

linuxã«é–¢ã™ã‚‹mxgã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (77)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

DMM inside
ãƒ¬ãƒ“ãƒ¥ãƒ¼è‡ªå‹•æ‰¿èªåŒ–ã¨ç²¾åº¦100%ã‚’ç›®æŒ‡ã—ã¦ã€‚ã„ã¡æ—©ãç”ŸæˆAIã®å°Žå…¥ã«è¸ã¿å‡ºã—ãŸã€Œãƒ¦ãƒ¼ã‚¶ãƒ¼ãƒ¬ãƒ“ãƒ¥ãƒ¼åŸºç›¤ã€ã®å–ã‚Šçµ„ã¿
mxg 2014/09/15
linux

memory
ãƒªãƒ³ã‚¯
http://wrtnode.com/
mxg 2014/08/21
openwrt

linux
ãƒªãƒ³ã‚¯
[OpenWrt Wiki] Welcome to the OpenWrt Project
The OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, Open
mxg 2014/07/04
linux
ãƒªãƒ³ã‚¯
10GbEæ™‚ä»£ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯I/Oé«˜é€ŸåŒ–
ã€Œè¦–åº§ã€ã®ä¸Šã‘ã‚™æ–¹ã‹ã‚™æˆäººç™ºé”ç†è«–ã«ã‚ã‹ã‚Šã‚„ã™ãã¾ã¨ã¾ã£ã¦ãŸ / think_ perspective_hidden_dimensions
mxg 2014/05/26
performance

linux
ãƒªãƒ³ã‚¯
How to find out which processes are using swap space in Linux?
Ask questions and share your thoughts on the future of Stack Overflow. Join our first live community AMA this Wednesday, February 26th, at 3 PM ET. Learn more
mxg 2014/05/15
linux
ãƒªãƒ³ã‚¯
The 67th Yokohama kernel reading party
Explaining glibc malloc internals. slide: http://www.slideshare.net/kosaki55tea/glibc-malloc
mxg 2014/04/15
malloc

linux
ãƒªãƒ³ã‚¯
Imoutable Infrastructure - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
æ—©é€Ÿä½œã‚Šã¾ã—ãŸã€‚ Ubuntu 12.04 LTS ã§å‹•ä½œç¢ºèªã—ã¾ã—ãŸã€‚Ubuntu ã˜ã‚ƒãªã„ã¨å‹•ã‹ãªã„ã¨æ€ã„ã¾ã™ã€‚ # aptitude install update-motd # rm -f /etc/update-motd.d/* # vi /etc/update-motd.d/99-imoutable (å¾Œè¿°) # grep UsePAM /etc/ssh/sshd_config UsePAM yes (UsePAM yesã˜ã‚ƒãªã‹ã£ãŸã‚‰yesã«ã—ã¦ service ssh restart) # grep motd /etc/pam.d/sshd session optional pam_motd.so # [1] (pam_motdãŒã‚³ãƒ¡ãƒ³ãƒˆã‚¢ã‚¦ãƒˆã•ã‚Œã¦ã„ãŸã‚‰ã‚³ãƒ¡ãƒ³ãƒˆã‚’å¤–ã™) å‹•ä½œä¾‹ /etc/update-motd.d/99-imoutable #!/bin/bash imou
mxg 2014/04/07
linux

ssh
ãƒªãƒ³ã‚¯
ã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã‹ã‚‰åˆ‡ã‚ŒãŸãƒ—ãƒã‚»ã‚¹ã‚’æ¨™æº–å‡ºåŠ›ã«ã¤ãªã’ãªãŠã™ - çµ¶å“ã‚†ã©ã†ãµã®ã‚¿ãƒ¬
ä¸æ…£ã‚Œãªç’°å¢ƒã‚’ä¸æ„ã«ã„ã˜ã£ãŸæ™‚ã«ã‚ã‚‹ã‚ã‚‹ãƒã‚¿ã€‚ ã¨ã‚Šã‚ãˆãšãƒ¼ ã¨ã‹è¨€ã£ã¦å‹¢ã„ã§æ›¸ã„ãŸsetupã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’å®Ÿè¡Œã—ã¦ã¿ãŸã‚‰æ„å¤–ã¨æ™‚é–“ã‹ã‹ã£ã¦ã€ ã¡ã‚‡ã£ã¨ç›®ã‚’é›¢ã—ãŸéš™ã«sshã®æŽ¥ç¶šãŒåˆ‡ã‚Œã¡ã‚ƒã„ã¾ã—ãŸï¼ ã€‚ã€‚ã€‚ã‚ã‚Šã¾ã™ã‚ˆãã€‚ã»ã‚“ã¨ã‚ˆãã‚ã‚Šã¾ã™ã‚ˆãã€‚ ãã†ãªã‚‹äºˆæ„Ÿã¯ã‚ã£ãŸã‚“ã ãªã‚“ã¦å¾Œã®ç¥ã‚Šã§ã™ã€‚ãµã¨ã—ãŸæ²¹æ–ã‹ã‚‰ã€screenã‚‚nohupã™ã‚‰ã‚‚ä½¿ã‚ãšã«ã‚„ã£ã¦ã—ã¾ã£ã¦ã€ã“ã‚“ãªã“ã¨ã«ã€‚ shellãŒHUPã—ãªã‹ã£ãŸã‹ã‚‰ãƒ—ãƒã‚»ã‚¹ã¯ç”Ÿãã¦ã‚‹ã‚‚ã®ã®ã€ãƒã‚°ãŒè¦‹ã‚Œãªã„ã‹ã‚‰é€²è¡ŒçŠ¶æ³ãŒã‚ã‹ã‚‰ãªã„ã€‚ ã†ã¾ãè¡Œã£ã¦ã‚‹ã®ã‹ã©ã†ã‹ãƒ¢ãƒ¤ãƒ¢ãƒ¤ã—ãŸæ°—æŒã¡ã®ã¾ã¾ã€ãƒ—ãƒã‚»ã‚¹ãŒçµ‚ã‚ã‚‹ã®ã‚’ã˜ã£ã¨å¾…ã¤ã€‚ã€‚ã€‚ ã¾ãå®Ÿã«åˆ‡ãªã„ã§ã™ã€‚ ã“ã‚“ãªæ™‚ã€ã„ã¤ã‚‚æ€ã†ã“ã¨ã€‚ ã“ã®ãƒ—ãƒã‚»ã‚¹ã®å‡ºåŠ›ã€ã‚‚ã£ã‹ã„stdoutã«ç¹‹ã’ã‚‰ã‚ŒãŸã‚‰ã„ã„ã®ã«ã€‚ã€‚ã€‚ ã¯ã„ã€‚ã¨ã„ã†ã‚ã‘ã§ã¤ãªã’ã¾ã—ã‚‡ã†ã€‚ é•·ã„å‰åº§ã§ã™ã¿ã¾ã›ã‚“ã€‚ åˆ‡ã‚Šé›¢ã—ãŸãƒ—ãƒã‚»ã‚¹ã‚’ç”¨æ„ #!/bin/bash wh
mxg 2014/02/11
linux

debug
ãƒªãƒ³ã‚¯
ä¸€æ™‚ãƒ•ã‚¡ã‚¤ãƒ«ã¨dentry cacheã¨ãƒ¡ãƒ¢ãƒª - blog.nomadscafe.jp
ã‚ã‚Šã¨é•·ã„é–“æ‚©ã‚“ã§ã„ãŸã‚“ã ã‘ã©ã€æœ€è¿‘è§£æ±ºã—ãŸã®ã§ãƒ¡ãƒ¢ã€‚ ã‚µãƒ¼ãƒ“ã‚¹ã§åˆ©ç”¨ã—ã¦ã„ã‚‹smalllightã®ç”»åƒå¤‰æ›ã‚µãƒ¼ãƒãŒã€ApacheãŒä½¿ã£ã¦ã„ã‚‹ãƒ¡ãƒ¢ãƒªä»¥ä¸Šã®ãƒ¡ãƒ¢ãƒªã‚’ä½¿ç”¨ã—ã€Swapã—ãŸã‚Šãƒ¡ãƒ¢ãƒªæž¯æ¸‡ã§ã‚µãƒ¼ãƒãŒãƒ€ã‚¦ãƒ³ã™ã‚‹ãªã©ã®ã“ã¨ãŒä½•åº¦ã‹ã‚ã‚Šã¾ã—ãŸã€‚ â†‘ãƒ¡ãƒ¢ãƒªã®å‹•ãã¯ã“ã‚“ãªæ„Ÿã˜ ã„ã‚ã„ã‚èª¿ã¹ãŸçµæžœã€Œdentry cacheã€ãªã‚‹ã‚‚ã®ãŒãƒ¡ãƒ¢ãƒªå¤šãã‚’å ã‚ã¦ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚dentry cacheã¯ãƒ‡ã‚£ãƒ¬ã‚¯ãƒˆãƒªã‚„ãƒ•ã‚¡ã‚¤ãƒ«åã¨inodeã¨ã‚’çµã³ã¤ã‘ã«ä½¿ã‚ã‚Œã‚‹ã‚ãƒ£ãƒƒã‚·ãƒ¥ã§ã™ã€‚smalllightã§ã¯ç”»åƒã‚’å¤‰æ›ã™ã‚‹éš›ã«ä¸€æ™‚ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä½œæˆã™ã‚‹ã®ã§ã€ãã®æƒ…å ±ãŒæ®‹ã‚‹ã‚ˆã†ã§ã™ã€‚ æ‰‹å…ƒã§å†ç¾ã•ã›ã‚‹ æœ¬ç•ªã§ä½¿ã£ã¦ã„ã‚‹ã‚µãƒ¼ãƒã¯CentOS5ç³»ã§ã™ãŒã€æ‰‹å…ƒã®Vagrantä¸Šã®CentOS6(ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã¯ext4)ã§ã€å†ç¾ã•ã›ã¦ã¿ã¾ã—ãŸã€‚ use Parallel::Prefork; use File::Tem
mxg 2014/01/13
linux

infra
ãƒªãƒ³ã‚¯
Modern Operations Management - ScienceLogic
mxg 2013/08/26
performance

linux
ãƒªãƒ³ã‚¯
Linux ã®ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ãŸ
Linux ã®ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆã®ã¯ãªã— ==================================== ï¼ˆã“ã‚Œã‚’æ›¸ã„ãŸã®ã¯ Linux 2.6.38 ã®ã¨ãï¼‰ Linux ã‚«ãƒ¼ãƒãƒ«ã¯å®Ÿãƒ¡ãƒ¢ãƒªä»¥ä¸Šã«ãƒ¡ãƒ¢ãƒªã‚’ãƒ—ãƒã‚»ã‚¹ã«å‰²ã‚Šå½“ã¦ã‚‹ã“ã¨ãŒã§ãã‚‹ ã“ã®ä»•çµ„ã¿ã‚’ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆ (over-commit) ã¨å‘¼ã¶ ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆã§ã¯ï¼Œã¨ã‚Šã‚ãˆãšãƒ¡ãƒ¢ãƒªã‚’ `malloc` ã•ã›ã¦ä»®ã®ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’è¿”ã—ã¦ãŠãï¼Œ å®Ÿéš›ã«ä½¿ã‚ã‚Œã‚‹æ®µã«ãªã£ã¦ã¯ã˜ã‚ã¦å®Ÿãƒ¡ãƒ¢ãƒªã‚’ç¢ºä¿ã™ã‚‹ï¼Ž å®Ÿé¨“ --------- ãŸã `malloc` ã—ç¶šã‘ã‚‹ã ã‘ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ä½œã£ã¦å®Ÿé¨“ã—ã¦ã¿ã‚‹ï¼Ž ã“ã®ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ãƒ¡ãƒ¢ãƒª 1 GB + ã‚¹ãƒ¯ãƒƒãƒ— 1 GB ã®ãƒ›ã‚¹ãƒˆã§å®Ÿè¡Œã—ã¦ã¿ã‚‹ã¨ï¼Œ $ free -t total used free shared buffers cached Mem: 1022404 82992 939412 0 4
mxg 2013/07/01
linux
ãƒªãƒ³ã‚¯
unix domain socketã§ãƒ•ã‚¡ã‚¤ãƒ«è¨˜è¿°åã‚’ã‚„ã‚Šã¨ã‚Šã™ã‚‹ã‚½ã‚±ãƒƒãƒˆãƒ—ãƒ¼ãƒªãƒ³ã‚°ã‚’æ›¸ã„ã¦ã¿ãŸ - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
unix domain socketçµŒç”±ã§ãƒ—ãƒã‚»ã‚¹é–“ã§ãƒ•ã‚¡ã‚¤ãƒ«è¨˜è¿°åã®ã‚„ã‚Šã¨ã‚ŠãŒã§ãã‚‹ã®ã§ã€ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’ãƒ—ãƒ¼ãƒªãƒ³ã‚°ã—ã¦ã€unix domain socketçµŒç”±ã§åˆ¥ãƒ—ãƒã‚»ã‚¹ã«è²¸ã—å‡ºã™ã‚¹ã‚¯ãƒªãƒ—ãƒˆã‚’è©¦ã—ã«æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚ https://github.com/hirose31/socket-pooling poold.pl ã¯èµ·å‹•ã™ã‚‹ã¨ 127.0.0.1:11211 ã¸ã®ã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’ 3 ã¤ä½œã£ã¦ä¿æŒã—ã€unix domain socketã‚’listenã—ã¦ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‹ã‚‰ã®è²¸ã—å‡ºã—è¦æ±‚ã‚’å¾…ã¡ã¾ã™ã€‚ ã¡ãªã¿ã«ã€unix domain socket ã¯åå‰ä»˜ãã®ã§ã¯ãªãã€abstract namespace ã®ã‚’ä½œã£ã¦ã„ã¾ã™ã€‚ã“ã‚Œã®åˆ©ç‚¹ã¯ã€ãƒ‘ã‚¹ã«ä¾å˜ã—ãªã„ã®ã§ã€chrootå†…ã®ãƒ—ãƒã‚»ã‚¹ã¨å¤–ã®ãƒ—ãƒã‚»ã‚¹ãŒã‚„ã‚Šã¨ã‚Šã§ãã‚‹ç‚¹ã§ã™ã€‚ client.pl ã¯èµ·å‹•ã™ã‚‹ã¨ã€unix domain sock
mxg 2013/05/23
perl

linux
ãƒªãƒ³ã‚¯
Engine Yard Blog
We are proud to be working with our customers while they continue to enjoy our Engine Yard products. Here are some changes we are making
mxg 2012/11/02
linux

performance
ãƒªãƒ³ã‚¯
Raspberry Piï¼ˆãƒ©ã‚ºãƒ™ãƒªãƒ¼ãƒ‘ã‚¤ï¼‰å±Šã„ãŸã‚ˆã€‚ - ãªã‚“ã§ã‚‚ä½œã£ã¡ã‚ƒã†ã€ã‹ã‚‚ã€‚
Arduino/Make/ãƒ•ã‚£ã‚¸ã‚«ãƒ«ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°/é›»åå·¥ä½œã‚ãŸã‚Šã§æ´»å‹•ã—ã¦ã„ã¾ã™ã€‚ã‚¹ã‚¿ãƒã®ç©ºãã‚«ãƒƒãƒ—ã‚’ä½¿ã£ãŸã‚¹ã‚¿ãƒã‚«ãƒƒãƒ—ã‚¢ãƒ³ãƒ—ãªã©è£½ä½œã€‚æœ€è¿‘ã¯ã‚‚ã£ã±ã‚‰Arduinoã¨3Dãƒ—ãƒªãƒ³ã‚¿ã®è‡ªä½œã«èˆˆå‘³ãŒã‚ã‚Šã¾ã™ã€‚ å··ã§å¤§äººæ°—ã®è¶…å°åž‹ã®ãƒžã‚¤ã‚³ãƒ³ãƒœãƒ¼ãƒ‰ã€ŒRaspberry Piï¼ˆãƒ©ã‚ºãƒ™ãƒªãƒ¼ãƒ‘ã‚¤ï¼‰ã€ãŒå±Šã„ãŸã‚ˆã€‚ãŠå€¤æ®µãªã‚“ã¨ãŸã£ãŸã®$35 $30ã€‚ã—ã‹ã‚‚ã“ã®å€¤æ®µã§LinuxãŒå‹•ã„ã¡ã‚ƒã†ã‹ã‚‰ã™ã”ã„ã€‚ ä¸»ãªã‚¹ãƒšãƒƒã‚¯ ãƒãƒƒãƒ—ï¼šBroadcom BCM2835 CPUï¼š700MHz ARM11 ARM1176JZF-S core ã‚°ãƒ©ãƒ•ã‚£ãƒƒã‚¯ï¼šOpenGL ES 2.0ã€OpenVG 1080p30 H.264ã‚¨ãƒ³ã‚³ãƒ¼ãƒ€/ãƒ‡ã‚³ãƒ¼ãƒ€ ãƒ¡ãƒ¢ãƒªï¼š256 MB SDRAM ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ï¼š10/100BaseT ã‚¤ãƒ¼ã‚µãƒ¼ãƒãƒƒãƒˆ ãƒ“ãƒ‡ã‚ªå‡ºåŠ›ï¼šã‚³ãƒ³ãƒã‚¸ãƒƒãƒˆãƒ“ãƒ‡ã‚ªï¼ˆRCAï¼‰ã€HDMIç«¯å ã‚ªãƒ¼ãƒ‡ã‚£ã‚ªå‡ºåŠ›ï¼š3.5mmã‚ªãƒ¼ãƒ‡ã‚£ã‚ª
mxg 2012/08/09
make

linux
ãƒªãƒ³ã‚¯
Start - weighttp - lighty labs
weighttpÂ¶ AboutÂ¶ weighttp (pronounced weighty) is a lightweight and small benchmarking tool for webservers. It was designed to be very fast and easy to use and only supports a tiny fraction of the HTTP protocol in order to be lean and simple. weighttp supports multithreading to make good use of modern CPUs with multiple cores as well as asynchronous i/o for concurrent requests within a single thre
mxg 2012/08/01
linux
ãƒªãƒ³ã‚¯
NetHogs - 'net top' per process
NetHogs is a small 'net top' tool. Instead of breaking the traffic down per protocol or per subnet, like most tools do, it groups bandwidth by process. NetHogs does not rely on a special kernel module to be loaded.
mxg 2012/05/14
linux
ãƒªãƒ³ã‚¯
Server::Starterã‹ã‚‰å¦ã¶hot deployã®ä»•çµ„ã¿ - $shibayu36->blog;
ä»¥å‰http://tech.naver.jp/blog/?p=1369ã®è¨˜äº‹ã‚’èªã‚“ã ã®ã ã‘ã‚Œã©ã€ãã‚Œã¾ã§ã«processã®çŸ¥è˜ãŒç„¡ã‹ã£ãŸã‚Šã—ã¦ã€ã¾ã£ãŸãç†è§£ã§ãã¾ã›ã‚“ã§ã—ãŸã€‚ãã“ã§Working with UNIX Processesã‚„Server::Starterã®ä¸èº«ã‚’å‘¼ã‚“ã§ã‚ˆã†ã‚„ãhot deployã®ä»•çµ„ã¿ã‚’ç†è§£ã§ããŸ(æ°—ã«ãªã£ã¦ã„ã‚‹)ã®ã§ã€Server::Starterã®å®Ÿè£…ã‚’è¿½ã„ãªãŒã‚‰ã€ãã‚Œã‚’ã¾ã¨ã‚ã¦ã¿ã¾ã™ã€‚ hot deployã¨ã¯ hot deployã¨ã¯ã€Œå†èµ·å‹•ã®æ™‚ã«ãƒªã‚¯ã‚¨ã‚¹ãƒˆã®å‡¦ç†ã‚’ç¶šã‘ãªãŒã‚‰ã€å¤‰æ›´ã®å†…å®¹ã‚’åæ˜ ã™ã‚‹ãŸã‚ã®æ‰‹æ®µã€ã§ã™ã€‚ é€šå¸¸serverã‚’restartã•ã›ã‚‹ã¨ãã¯ã€stop -> startã®æµã‚Œã«ãªã‚‹ã¨æ€ã„ã¾ã™ãŒã€ã“ã®å ´åˆstopã—ã¦ã‹ã‚‰ã€startå‡ºæ¥ã‚‹ã¾ã§ã®æœŸé–“ã«ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’å‡¦ç†ã§ããªã„æœŸé–“ãŒç™ºç”Ÿã—ã¾ã™ã€‚ãã®æœŸé–“ãªã—ã«deployã™ã‚‹ä»•çµ„ã¿ãŒhot
mxg 2012/05/13
perl

linux
ãƒªãƒ³ã‚¯
dstatã®ä¸‡èƒ½æ„ŸãŒãƒãƒ³ãƒ‘ãªã„ - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
ã‚µãƒ¼ãƒãƒ¼ã®ãƒªã‚½ãƒ¼ã‚¹ã‚’è¦‹ã‚‹ã«ã¯ã‚°ãƒ©ãƒ•åŒ–ã¯é‡è¦ã§ã™ãŒã€æŽ¨ç§»ã§ã¯ãªããƒªã‚¢ãƒ«ã‚¿ã‚¤ãƒ ãªçŠ¶æ³ã€ä¾‹ãˆã°ç§’å˜ä½ã®ã‚¹ãƒ‘ã‚¤ã‚ãƒ¼ãªè² è·ã‚’è¦‹ã‚‹ã«ã¯ã€ã‚µãƒ¼ãƒãƒ¼ä¸Šã§vmstatã‚„iostatãªã©ã®*statãƒ•ã‚¡ãƒŸãƒªãƒ¼ã‚’å©ãå¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ã•ã¦ã€vmstatã¯ãƒ¡ãƒ¢ãƒªã®çŠ¶æ³ã‚„ãƒ–ãƒãƒƒã‚¯æ•°å˜ä½ã®I/OçŠ¶æ³ã¯è¦‹ã‚‰ã‚Œã¾ã™ãŒã€ãƒã‚¤ãƒˆå˜ä½ã®I/OçŠ¶æ³ã‚„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®é€ä¿¡ã€å—ä¿¡ãƒã‚¤ãƒˆæ•°ã‚’è¦‹ã‚‹ã“ã¨ã¯ã§ãã¾ã›ã‚“ã€‚ # vmstat 1 procs -----------memory---------- ---swap--- -----io----- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 3 1 0 4724956 355452 726532 0 0 54 484 3 3 1 0 99 0 0 2 0 0 47
mxg 2012/03/02
linux
ãƒªãƒ³ã‚¯
è² è·åˆ†æ•£æŠ€è¡“ã€€VA Linux Systems Japan
æä¾›ã•ã‚Œã‚‹ã‚µãƒ¼ãƒ“ã‚¹ã®ãƒãƒ¼ãƒˆç•ªå·å®›ã®ãƒ‘ã‚±ãƒƒãƒˆã‚’æ¤œå‡ºã—ã€ãã‚Œã¨å¯¾å¿œã™ã‚‹å®Ÿã‚µãƒ¼ãƒã«å¯¾ã—ã¦ã€ãƒ‘ã‚±ãƒƒãƒˆã®è»¢é€å‡¦ç†ã‚’è¡Œã„ã¾ã™ã€‚TCPã‚³ãƒã‚¯ã‚·ãƒ§ãƒ³ã‚’ã€ã‚ã‚‰ãŸã‚ã¦é–‹è¨ã™ã‚‹éš›ã®ãƒ‘ã‚±ãƒƒãƒˆï¼ˆå®Ÿã‚µãƒ¼ãƒã¨ã®å¯¾å¿œã¥ã‘ãŒã•ã‚Œã¦ã„ãªã„ãƒ‘ã‚±ãƒƒãƒˆã‚’æŒ‡ã™ï¼‰ã‚„ã€UDPãƒ‘ã‚±ãƒƒãƒˆã®å ´åˆã«ã¯ã€è»¢é€å…ˆã®å®Ÿã‚µãƒ¼ãƒã«ã¤ã„ã¦ã©ã‚Œã«ã™ã¹ãã‹ã€ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒ«ã‚«ãƒ¼ãƒãƒ«ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã«å•ã„åˆã‚ã›ã‚’è¡Œã£ã¦ã‹ã‚‰å‡¦ç†ã‚’ã—ã¾ã™ã€‚ ãƒ‘ã‚±ãƒƒãƒˆè»¢é€æ–¹æ³•ã«ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ãªç¨®é¡žãŒã‚ã‚Šã¾ã™ã€‚ LVS/NAT NATã«ã‚ˆã‚Šå®›å…ˆIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å®Ÿã‚µãƒ¼ãƒã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¤‰æ›ã—ã¦è»¢é€ã™ã‚‹ ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µå®›ã«åˆ°ç€ã—ãŸãƒ‘ã‚±ãƒƒãƒˆã¯ã€å®›å…ˆIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’å®Ÿã‚µãƒ¼ãƒã®ã‚‚ã®ã«å¤‰æ›ã™ã‚‹ã“ã¨ã§å®Ÿã‚µãƒ¼ãƒã«è»¢é€ã—ã¾ã™ã€‚å®Ÿã‚µãƒ¼ãƒã‹ã‚‰ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¸ã®å¿œç”ãƒ‘ã‚±ãƒƒãƒˆã¯ã€ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µãŒã‚½ãƒ¼ã‚¹ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’ã€ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ã«å¤‰æ›ã—ã¦ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã«è»¢é€ã—ã¾ã™ã€‚ã“ã®æ§‹æˆã§ã¯ã€ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µå´ã§ã€IPã‚¢ãƒ‰ãƒ¬ã‚¹å¤‰æ›
mxg 2011/12/22
Weighted Least-Connectio Weighted Least-Connection

linux

lvs
ãƒªãƒ³ã‚¯
/proc/meminfoã‚’è€ƒãˆã‚‹ - ã‚ã‚‚ã‚ã‚‚
é€šã‚Šã™ãŒã‚Šã®è²´æ–¹ãƒ»ãƒ»ãƒ»ãƒ» /proc/meminfoã®ã‚ã£ã¡ã®å€¤ã¨ã“ã£ã¡ã®å€¤ã‚’è¶³ã—ãŸã‚‰ã€ãªã‚“ã§ãã£ã¡ã®å€¤ã¨åŒã˜ã«ãªã‚‰ãªã„ã®ãƒ»ãƒ»ãƒ»ãƒ» ã¨æ‚©ã‚“ã ã“ã¨ã‚ã‚Šã¾ã™ã‚ˆãï¼Ÿ /proc/meminfoã¯ã€ã‚«ãƒ¼ãƒãƒ«ãŒå†…éƒ¨çš„ã«ç®¡ç†ã—ã¦ã„ã‚‹æž çµ„ã¿ã§ã®ãƒ¡ãƒ¢ãƒªæƒ…å ±ã‚’ãã®ã¾ã¾å‡ºã—ã¦ã„ã‚‹ã®ã§ã€æ®‹å¿µãªãŒã‚‰ãƒ¦ãƒ¼ã‚¶è¦–ç‚¹ã§çŸ¥ã‚ŠãŸã„ãƒ¡ãƒ¢ãƒªæƒ…å ±ã¨ã¯ä¸€è‡´ã—ã¾ã›ã‚“ã€‚ ã¨ã¯ã„ãˆã€å¤‰ãªè§£é‡ˆã‚’ã—ã¦ç„¡æ„å‘³ã«æ‚©ã¾ãªã„ãŸã‚ã«ã€ãã‚Œãžã‚Œã®å€¤ã®æ„å‘³åˆã„ã¨é …ç›®é–“ã®é–¢ä¿‚ã‚’çŸ¥ã£ã¦ãŠãã®ã¯æœ‰æ„ç¾©ã§ã™ã€‚ç§ã®ç†è§£ã®ç¯„å›²ã§ã€ãã‚Œã‚‰ã®é–¢ä¿‚ã‚’ã¾ã¨ã‚ã¦ã„ãã¾ã™ã€‚ ï¼ƒç§ã®ç†è§£ã‚‚å®Œç’§ã§ã¯ãªã„ã®ã§ã€é–“é•ã„ã‚ã‚Œã°ã‚„ã•ã—ãã”æŒ‡æ‘˜ãŠé¡˜ã„ã—ã¾ã™ã€‚ å‚è€ƒè³‡æ–™ã€€http://mkosaki.blog46.fc2.com/blog-entry-1007.html 2011/09/07 è¿½è¨˜ï¼š tmpfsãŒSwapCachedã«å«ã¾ã‚Œã‚‹ã®ã¯å¹»æƒ³ã§ã—ãŸã€‚tmpfs=Shmemã«ä¿®æ£ã—ã¾ã—ãŸã€‚
mxg 2011/12/04
linux
ãƒªãƒ³ã‚¯
1 2 3 4 æ¬¡ã®ãƒšãƒ¼ã‚¸