[B! linux] umiyoshã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

umiyosh id:umiyosh

linuxã«é–¢ã™ã‚‹umiyoshã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (110)

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ãƒˆãƒ¼ãƒãƒ«ã‚ºæ°ãŒè€ƒãˆã‚‹ã€Linuxã«ãŠã‘ã‚‹Rustã®å±…å ´æ‰€ã¨ã¯
Linuxã¯ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªžCã®ç”³ã—åã®ã‚ˆã†ãªå˜åœ¨ã ã€‚ã—ã‹ã—æ™‚ã¯æµã‚Œã€çŠ¶æ³ã¯å¤‰ã‚ã£ãŸã€‚Rustã‚’Linuxã®ã‚·ã‚¹ãƒ†ãƒ è¨˜è¿°è¨€èªžã¨ã—ã¦æŽ¡ç”¨ã—ã‚ˆã†ã¨ã„ã†å‹•ããŒå°‘ã—ãšã¤æ”¯æŒã‚’é›†ã‚ã¦ãã¦ã„ã‚‹ã€‚ä¾‹ã‚’æŒ™ã’ã‚‹ã¨ã€Linuxã‚«ãƒ¼ãƒãƒ«é–‹ç™ºè€…ã®ãŸã‚ã®å¹´æ¬¡ã‚«ãƒ³ãƒ•ã‚¡ãƒ¬ãƒ³ã‚¹ã€ŒLinux Plumbers Conferenceï¼ˆLPCï¼‰2020ã€ã«ãŠã„ã¦ã€é–‹ç™ºè€…ã‚‰ã¯Linuxã®ã‚¤ãƒ³ãƒ©ã‚¤ãƒ³ã‚³ãƒ¼ãƒ‰éƒ¨åˆ†ã§ã®Rustã®æŽ¡ç”¨ã‚’çœŸå‰£ã«è°è«–ã—ã¦ã„ãŸã€‚ãã®è°è«–ã¯ç¾åœ¨ã©ã†ãªã£ã¦ã„ã‚‹ã®ã ã‚ã†ã‹ï¼Ÿç†è€…ã¯Linuxã®çˆ¶ã¨ç›®ã•ã‚Œã‚‹Linus Torvaldsæ°ã¨ã€Linuxã®å®‰å®šç‰ˆã‚«ãƒ¼ãƒãƒ«ã®ãƒ¡ãƒ³ãƒ†ãƒŠãƒ¼ã§ã‚ã‚‹Greg Kroah-Hartmanæ°ã‹ã‚‰è€ƒãˆã‚’èžã„ãŸã€‚ ã“ã‚Œã¯Rustã«é…äº†ã•ã‚ŒãŸä¸€éƒ¨ã®é–‹ç™ºè€…ã‚‰ã«ã‚ˆã£ã¦æŽ¨ã—é€²ã‚ã‚‰ã‚Œã¦ã„ã‚‹æœºä¸Šã®ç©ºè«–ã§ã¯ãªã„ã€‚Linuxã§Rustã‚’ç©æ¥µçš„ã«åˆ©ç”¨ã—ã‚ˆã†ã¨ã™ã‚‹ã‚¢ãƒ—ãƒãƒ¼ãƒã¯ã€æ—¢ã«ä¸–ã®ä¸ã§è¦‹ã‹ã‘ã‚‹ã‚ˆã†ã«ãªã£ã¦ã„ã‚‹
umiyosh 2021/03/31
rust

linux

é–‹ç™º
ãƒªãƒ³ã‚¯
Interactive map of Linux kernel
image/svg+xml Linux kernel map Constantine Shulyupin Â© 2007â€“2022 Constantine Shulyupin www.MakeLinux.net/kernel/map virtual logical electronics I/O memory CPU HI char devices HI subsystems address families sockets access protocols network interfaces networking Virtual File System block devices storage virtual memory memory access logical memory Page Allocator memory threads processes Scheduler int
umiyosh 2020/06/10
linux
ãƒªãƒ³ã‚¯
Linuxã®loadavgãŒç´„7æ™‚é–“ã”ã¨ã«ä¸Šæ˜‡ã™ã‚‹ç¾è±¡ã®åŽŸå› - Mackerel ãƒ–ãƒã‚° #mackerelio
Mackerelãƒãƒ¼ãƒ ã®ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®id:itchynyã§ã™ã€‚ ã€Œmackerel-agentã‚’å…¥ã‚Œã‚‹ã¨loadavgãŒ7æ™‚é–“ã”ã¨ã«ä¸Šæ˜‡ã™ã‚‹ã€ å…ˆæ—¥ã€ã“ã®ã‚ˆã†ãªå•ã„åˆã‚ã›ã‚’è¤‡æ•°ã®ãŠå®¢ã•ã¾ã‹ã‚‰å—ã‘ã¾ã—ãŸã€‚ç§ã‚‚å®Ÿé¨“ã—ã¦ã¿ãŸã¨ã“ã‚ã€ç¢ºã‹ã«å†ç¾ã—ã¾ã—ãŸã€‚EC2 t2.microã«mackerel-agentã‚’å…¥ã‚Œã¦ç°¡å˜ãªãƒã‚°ç›£è¦–ã¨ãƒ—ãƒã‚»ã‚¹ç›£è¦–ã‚’è¨å®šã—ã€æ•°æ—¥æ”¾ç½®ã—ã¾ã—ãŸã€‚ ç¢ºã‹ã«ã€ç´„7æ™‚é–“ã”ã¨ã«loadavgãŒä¸Šæ˜‡ã—ã¦ã„ã¾ã™ã€‚ã“ã®å‘¨æœŸã®cronã®è¨å®šã¯ã—ã¦ãŠã‚‰ãšã€ã¾ãŸmackerel-agentå†…éƒ¨ã§ã‚‚7æ™‚é–“ã”ã¨ã«è¡Œã†å‡¦ç†ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ã—ã‹ã—ã€ãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã‚’å¤šãå…¥ã‚Œã‚‹ã»ã©loadavgã®ãƒ”ãƒ¼ã‚¯å€¤ã‚‚ä¸ŠãŒã‚Šã¾ã™ã€‚ æœ¬ã‚¨ãƒ³ãƒˆãƒªãƒ¼ã§ã¯ã€ã“ã®ç¾è±¡ã®åŽŸå› ã«ã¤ã„ã¦èª¬æ˜Žã—ã¾ã™ã€‚ loadavgãŒä¸Šæ˜‡ã™ã‚‹åŽŸå› ã‚’èª¿ã¹ã‚‹ã«ã¯ã€ã¾ãšloadavgè‡ªä½“ãŒã©ã†è¨ˆç®—ã•ã‚Œã¦ã„ã‚‹ã‹ã‚’çŸ¥ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚ ã¾ãšã¯ã€LinuxãŒloada
umiyosh 2018/06/13
linux

kernel
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CentOS 6.2 ã§ RPS/RFS ã‚’ä½¿ã£ã¦ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã®å‰²ã‚Šè¾¼ã¿å‡¦ç†ã‚’è¤‡æ•°ã‚³ã‚¢ã«åˆ†æ•£ã—ã¦ã¿ãŸ - blog.nomadscafe.jp
ä»¥å‰(2010å¹´)ã«ã€Œã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§ã‚‚ãƒžãƒ«ãƒã‚³ã‚¢CPUã‚’æ´»ã‹ã›ãªã„ä»¶ã€ã¨ã„ã†ã‚¨ãƒ³ãƒˆãƒªã«ã¦CPUã®ã‚³ã‚¢ãŒå¢—ãˆã¦ã‚‚å‰²ã‚Šè¾¼ã¿å‡¦ç†ãŒåˆ†æ•£ã•ã‚Œãªã„ã®ã§ã‚¹ã‚±ãƒ¼ãƒ«ã•ã‚Œãªã„ã¨æ›¸ã„ãŸã‘ã©ã€ãã®å¾ŒLinux Kernelã«RPS/RFSãªã‚‹æ©Ÿèƒ½ãŒè¿½åŠ ã•ã‚Œã€å‰²ã‚Šè¾¼ã¿å‡¦ç†ãŒåˆ†æ•£ã§ãã‚‹ã‚ˆã†ã«ãªã‚Šã€CentOS 6.2 ã§ã‚‚ä½¿ãˆã‚‹ã‚‰ã—ã„ã®ã§è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ RPS/RFSã«ã¤ã„ã¦ã®ç´¹ä»‹ã¯ VIOPS06ã§ã€ŒRPSãƒ»RFSç‰æœ€æ–°Linux Kerneläº‹ä¾‹ã€ã¨é¡Œã—ã¦ãŠè©±ã—ã¦ãã¾ã—ãŸ http://d.hatena.ne.jp/syuu1228/20110722/1311322653 Linuxå†…æ ¸ RPS/RFSåŠŸèƒ½è¯¦ç»†æµ‹è¯•åˆ†æž http://www.igigo.net/archives/204 ãŒè©³ã—ã„ã€‚2ç•ªç›®ã®ã¯ã»ã¼èªã‚ãªã„ã‘ã©ã€æ€§èƒ½æ¯”è¼ƒã®ã‚°ãƒ©ãƒ•ãŒåˆ†ã‹ã‚Šã‚„ã™ã„ã€‚ ä»Šå›žè©¦ã—ãŸã‚µãƒ¼ãƒã¯ã€ OS: C
umiyosh 2016/07/27
linux
ãƒªãƒ³ã‚¯
perfã®ä½¿ã„ã‹ãŸ
æ¦‚è¦ Linuxã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹è§£æžãƒ„ãƒ¼ãƒ«ã§ã‚ã‚‹perfã®ä½¿ã„ã‹ãŸã®ç´¹ä»‹ èƒŒæ™¯ å€‹äººçš„ã«perfã‚ˆãã§ãã¦ã‚‹ã¨æ€ã†ã®ã§ç´¹ä»‹ã—ãŸã„ã¨ã„ã†ã®ã¨ã€ ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿æ–¹ã£ã¦ã‚ã‚“ã¾ã‚ŠçŸ¥ã‚‰ã‚Œã¦ãªã„ã¿ãŸã„ãªã®ã§ã€ ãã‚Œã®è§£èª¬ã‚’æ›¸ããŸã„ã€‚ æ§‹æˆ perf ã«ã¤ã„ã¦èª¬æ˜Žã—ãŸã‚ã¨ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚«ã‚¦ãƒ³ã‚¿ã®èªã¿ã‹ãŸã€è¦‹ã‹ãŸã€ã‚’èª¬æ˜Žã™ã‚‹ã€‚ perfã¨ã¯ä½•ã‹ Linuxã«ä»˜ã„ã¦ãã‚‹ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ã€‚ man perf ã«ã‚ˆã‚‹ã¨ã€ NAME ---- perf - Performance analysis tools for Linux ã¨ã€æ›¸ã„ã¦ã‚ã‚‹ã€‚åå‰ãŒã²ã©ã„ã®ã§ãªã‚“ã¨ã‹ã—ã¦ã»ã—ã„ã€‚ perf ã®ç‰¹å¾´ å€‹äººçš„ã«ã¯ã€æ‰‹è»½ã«ä½¿ãˆã‚‹ã®ãŒç´ æ™´ã‚‰ã—ã„ã¨æ€ã†ã€‚ 2.6.31ä»¥é™ã‚«ãƒ¼ãƒãƒ«ã«æ¨™æº–ã§ä»˜ã„ã¦ã‚‹ã€‚(Ubuntuã ã¨linux-tools-common(TODO:ã‚ã¨ã§ç¢ºèª)ã§å…¥ã‚‹ã¯ãš) ç‰¹æ®Šãªè¨å®šãŒå¿…è¦ç„¡ãã€
umiyosh 2016/07/27
perf

linux
ãƒªãƒ³ã‚¯
https://www.kernel.org/doc/Documentation/memory-barriers.txt
umiyosh 2016/07/25
linux
ãƒªãƒ³ã‚¯
ç‰¹å®šæ¡ä»¶ä¸‹ã®clone(2)ã‚’4å€é€Ÿãã™ã‚‹ - äººé–“ã¨ã‚¦ã‚§ãƒ–ã®æœªæ¥
ã¨ã‚ã‚‹ã‚µãƒ¼ãƒã§å¦™ã«ã‚·ã‚¹ãƒ†ãƒ CPUã®ä½¿ç”¨çŽ‡ãŒé«˜ã„ç¾è±¡ãŒç½®ãã¦ãŠã‚Šã¾ã—ãŸã€‚ ãã“ã§ã€ã¾ãšã¯ã–ã£ãã‚Šã¨perf topã§ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ«ã‚’ã¨ã£ã¦ã¿ã‚‹ã¨ã€ä»¥ä¸‹ã®ã‚ˆã†ã«ãªã£ã¦ã„ã¾ã—ãŸã€‚ 22.38% [kernel] [k] copy_pte_range 18.44% [kernel] [k] zap_pte_range 11.13% [kernel] [k] change_pte_range 3.58% [kernel] [k] page_fault 3.32% [kernel] [k] page_remove_rmap ã¾ãŸã€å„ãƒ—ãƒã‚»ã‚¹ã®straceã‚’çœºã‚ã¦ã„ã‚‹ã¨ã€cloneã§0.05ç§’ã¨ã‹ãªã‚Šæ™‚é–“ãŒã‹ã‹ã£ã¦ã„ã‚‹ã‚ˆã†ã§ã™ã€‚ã“ã‚Œã ã¨å˜ç´”è¨ˆç®—ã§1ã‚³ã‚¢ã§ç§’é–“20å›žã®cloneã§ã‚³ã‚¢100%å æœ‰ã—ã¦ã—ã¾ã†ç¨‹åº¦ã®éžå¸¸ã«ä½Žé€Ÿãªå‡¦ç†ã—ã‹ã§ããªã„ã“ã¨ã«ãªã‚Šã¾ã™ã€‚ sudo strace -T -o/dev/stdo
umiyosh 2016/07/23
performance

linux
ãƒªãƒ³ã‚¯
How to use, monitor, and disable transparent hugepages in Red Hat Enterprise Linux ? - Red Hat Customer Portal
Environment Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 6 transparent hugepages (THP) Issue How do transparent hugepages work in RHEL 6? How are transparent hugepages activated by a process? Do we still need to preallocate some amount of memory for use as (transparent) hugepages? How can I see the number of t
umiyosh 2016/06/28
linux
ãƒªãƒ³ã‚¯
TCMalloc Performance Optimization for a Self-Managed Deployment - Database Manual - MongoDB Docs
TCMalloc Performance Optimization for a Self-Managed Deployment Starting in Mongo DB 8.0, Mongo DB uses an upgraded version of TCMalloc that uses per-CPU caches, instead of per-thread caches, to reduce memory fragmentation and make your database more resilient to high-stress workloads. To use the new TCMalloc version: Use a supported operating system. Enable THP. Enable per-CPU caches. Platform Supp
umiyosh 2016/06/28
MongoDB

Linux
ãƒªãƒ³ã‚¯
gooã‚µãƒ¼ãƒ“ã‚¹çµ‚äº†ã®ãŠçŸ¥ã‚‰ã› | dãƒ¡ãƒ‹ãƒ¥ãƒ¼
ãƒ‹ãƒ¥ãƒ¼ã‚¹ã€å ã„ã€ã‚¢ãƒ—ãƒªã€éŸ³æ¥½ã€å‹•ç”»ã€æ›¸ç±ãªã©ã€Œã‚¹ãƒžãƒ›ãƒ»ãƒ©ã‚¤ãƒ•ã€ã‚’æ¥½ã—ã‚€ãŸã‚ã®æƒ…å ±ã‚’ç„¡æ–™ã§ãŠå±Šã‘ã—ã¾ã™ã€‚ ä»Šå¾Œã¯ã€dãƒ¡ãƒ‹ãƒ¥ãƒ¼ã‚’ã”åˆ©ç”¨ãã ã•ã„ã¾ã™ã‚ˆã†ã€ã‚ˆã‚ã—ããŠé¡˜ã„ã„ãŸã—ã¾ã™ã€‚
umiyosh 2016/06/28
linux
ãƒªãƒ³ã‚¯
é©å‘½ã®æ—¥ã€…ï¼ transparent hugepage considered harmful
ã‚¿ã‚¤ãƒˆãƒ«ã¯é‡£ã‚Šã§ã™ã€‚ã¯ã„ã€‚ ç¾çŠ¶ã€ã‚ã‚Šã¨ã‚ã‚‰ã‚†ã‚‹DBãŒTHPã‚’disableã™ã‚‹ã‚ˆã†æŽ¨å¥¨ã—ã¦ã„ã‚‹ã€‚ã“ã‚Œã¯ã‚ã‚“ã¾ã‚Šè‰¯ã„çŠ¶æ³ã˜ã‚ƒãªã„ã®ã§THPã‚’ disabled by default ã«å¤‰ãˆã‚ˆã†ã¨ã„ã†ææ¡ˆã€‚ Ted Ts'o ã¯ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆãŒenabledã ã‹ã‚‰ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒè‰¯ããªã‚‹ã‚±ãƒ¼ã‚¹ãŒæ°—ã¥ãã«ãã„ã ã‘ã ã‚ã†ã¨ä¸»å¼µã€‚ã¾ã‚ã€ãã†ã ã‚ã†ãã€‚KVM hostã¨ã‹ã ã¨ anon ã°ã£ã‹ã‚Šã¤ã‹ã†ã—ã€guest OSã§ãƒ¡ãƒ¢ãƒªåˆ¶é™ã‚ã‚‹ã‹ã‚‰ã€hostã®reclaimã¯èµ°ã‚‰ãªã„ã—ã§ã€æ‚ªã„ã‚±ãƒ¼ã‚¹ã«ãªã‚Šã«ããã†ã€‚ Vlastimil Babka ã¯ãã‚‚ãã‚‚ page faultã®å»¶é•·ã§ã€ã‚³ãƒ³ãƒ‘ã‚¯ã‚·ãƒ§ãƒ³å§‹ã‚ã¡ã‚ƒã†ã®ãŒã‚ˆããªã„ã®ã§ã€ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã¯ä»Šã‚ˆã‚Š less aggressiveã§ã‚ã‚‹ã¹ãã¨ã„ã†æ„è¦‹ã®ã‚ˆã†ã ã€‚ GooglerãŒä»Šã®ã¾ã¾ãŒã„ã„ã¨ä¸»å¼µã—ã¦ã„ã¦ã€ã‚¨ãƒ³ã‚¿ãƒ¼ãƒ—ãƒ©ã‚¤ã‚ºå±‹ã•ã‚“ãŒå¤‰ãˆãŸã„ã¨ã„ã†é™£å–¶ãªã®ã‹ãªã€‚
umiyosh 2016/06/28
linux
ãƒªãƒ³ã‚¯
Why does mongodb complain about transparent_hugepage?
Edit: Mongo db have addressed this issue since I wrote this answer. Their recommendation is at https://docs.mongo db.com/master/tutorial/transparent-huge-pages/ and probably ought to be your go-to solution. My original answer will still work, but I'd consider it a hack now that an official solution is available. Original answer: According to the Mongo DB documentation, http://docs.mongo db.org/manual/
umiyosh 2016/06/28
linux

mongodb
ãƒªãƒ³ã‚¯
5.2. Huge pages ãŠã‚ˆã³ transparent huge pages | ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã‚¬ã‚¤ãƒ‰ | Red Hat Enterprise Linux | 6 | Red Hat Documentation
umiyosh 2016/06/28
linux
ãƒªãƒ³ã‚¯
GoogleãŒæ•°åƒå°ã‚‚ã‚ã‚‹10å¹´å‰ã®Linuxãƒ‡ã‚£ã‚¹ãƒˆãƒªã‚’ãƒ©ã‚¤ãƒ–ã‚¢ãƒƒãƒ—ã‚°ãƒ¬ãƒ¼ãƒ‰ã—ãŸè©± - ã‚†ã†ã†ããƒ–ãƒã‚°
GoogleãŒã€å¤ªå¤ã®ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã§ã‚ã‚‹Red Hat 7.1ã‹ã‚‰ã€10å¹´æ–°ã—ã„Debianãƒ™ãƒ¼ã‚¹ã®ãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã¸ã€ãƒ©ã‚¤ãƒ–ã‚¢ãƒƒãƒ—ã‚°ãƒ¬ãƒ¼ãƒ‰ã—ãŸè©±ã‚’ç´¹ä»‹ã™ã‚‹ã€‚ ãã®ã‚ã¨ã€è‡ªåˆ†ã®èº«ã®å›žã‚Šã®ç’°å¢ƒã¨æ¯”è¼ƒã—ã€å‚è€ƒã«ã™ã¹ããƒã‚¤ãƒ³ãƒˆã‚’è€ƒå¯Ÿã™ã‚‹ã€‚ åŽŸæ–‡ã¯ USENIX LISA ã®æŠ•ç¨¿è«–æ–‡ã ã€‚ã—ã‹ã—ã€ä¸èº«ã¯è«–æ–‡ä½“ã¨ã„ã†ã‚ˆã‚Šã¯ã€äº‹ä¾‹ã®ç´¹ä»‹ã¨ã„ã£ãŸé©åˆ‡ã‹ã‚‚ã—ã‚Œãªã„ã€‚ MERLIN, M. Live Upgrading Thousands of Servers from an Ancient Red Hat Distribution to 10 Year Newer Debian Based One. In Proceedings of the 27th conference on Large Installation System Administration (LISA) (2013),
umiyosh 2016/06/03
linux

ops
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ã€ŒPCã‚’Win7ã®ã¾ã¾ã«ã—ã¦ãŠããŸã„ã®ã«å¼·åˆ¶çš„ã«Win10ã«ã™ã‚‹MSãŒå«Œã ï¼Linuxã«è¡Œãï¼ã€ã¨ã„ã†æ–¹ã¸Linuxãƒ¦ãƒ¼ã‚¶ãƒ¼ã¨ã—ã¦è¨€ã£ã¦ãŠããŸã„ã“ã¨
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umiyosh 2016/03/15
linux

desktop
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YYLive - ChÆ¡i game-yylive.com-yylive.tv, káº¿t báº¡n, xem livestream miá»…n phÃ
Tráº£i nghiá»‡m trÃ² chÆ¡i giáº£i trÃ vÃ sÃ²ng báº¡c Ä‘á»‰nh cao vá»›i YYLive.com CÃ¡c buá»•i phÃ¡t trá»±c tiáº¿p háº¥p dáº«n nháº¥t vÃ cÃ¡c trÃ² chÆ¡i cÃ³ tá»· lá»‡ cÆ°á»£c cao Ä‘ang chá» báº¡n! YYLive mang Ä‘áº¿n tráº£i nghiá»‡m phÃ¡t trá»±c tiáº¿p phong phÃº, nÆ¡i ngÆ°á»i xem cÃ³ thá»ƒ káº¿t ná»‘i vá»›i tháº§n tÆ°á»£ng yÃªu thÃch cá»§a mÃ¬nh vÃ thÆ°á»Ÿng thá»©c nhiá»u ná»™i dung háº¥p dáº«n. Ná»n táº£ng cá»§a chÃºng tÃ´i cÃ³ ráº¥t nhiá»u idol tÃ i nÄƒng vÃ háº¥p dáº«n, nhá»¯ng ngÆ°á»i mang Ä‘áº¿n sá»± thu hÃºt
umiyosh 2015/02/12
linux

io

performance
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linux ã‚¹ãƒ¯ãƒƒãƒ—ï¼ˆswapï¼‰é ˜åŸŸã®ä½œæˆ
deviceã«ã¯ã€ãƒ‡ã‚£ã‚¹ã‚¯ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã‹ã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚’æŒ‡å®šã—ã¾ã™ã€‚ ä½¿ç”¨ä¾‹ # mkswap /dev/sdb1ã€€â† ãƒ‡ãƒã‚¤ã‚¹ã‚’æŒ‡å®šã—ãŸå ´åˆ # mkswap /swapfileã€€â† ãƒ•ã‚¡ã‚¤ãƒ«ã‚’æŒ‡å®šã—ãŸå ´åˆ deviceã«ãƒ‡ã‚£ã‚¹ã‚¯ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã‚’æŒ‡å®šã™ã‚‹å ´åˆã¯ã€fdiskã‚³ãƒžãƒ³ãƒ‰ã§ã€ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã®ã‚¿ã‚¤ãƒ—ï¼ˆé ˜åŸŸã®ã‚·ã‚¹ãƒ†ãƒ IDï¼‰ã‚’82ï¼ˆLinux ã‚¹ãƒ¯ãƒƒãƒ—ï¼‰ã«ã—ã¦ãŠãã¾ã™ã€‚ deviceã«ãƒ•ã‚¡ã‚¤ãƒ«ã‚’æŒ‡å®šã™ã‚‹å ´åˆã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ã«ã€ddã‚³ãƒžãƒ³ãƒ‰ã‚’ä½¿ã£ã¦å…ˆã«ã‚¹ãƒ¯ãƒƒãƒ—ç”¨ã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä½œæˆã—ã¦ãŠãã¾ã™ã€‚ memo fdiskã‚³ãƒžãƒ³ãƒ‰ã§ã€ãƒ‘ãƒ¼ãƒ†ã‚£ã‚·ãƒ§ãƒ³ã®ã‚¿ã‚¤ãƒ—ï¼ˆé ˜åŸŸã®ã‚·ã‚¹ãƒ†ãƒ IDï¼‰ã‚’82ï¼ˆLinux ã‚¹ãƒ¯ãƒƒãƒ—ï¼‰ã«ã™ã‚‹ã€‚ # fdisk /dev/sdb ã‚³ãƒžãƒ³ãƒ‰ (m ã§ãƒ˜ãƒ«ãƒ—): p ã€€â†ç¾åœ¨ã®çŠ¶æ…‹ã‚’ç¢ºèª ãƒ‡ã‚£ã‚¹ã‚¯ /dev/sdb: 5368 MB, 5368709120 ãƒã‚¤ãƒˆ ãƒ˜ãƒƒãƒ‰ 255, ã‚»
umiyosh 2014/07/02
linux
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Linuxã®ã—ãã¿ã‚’å¦ã¶ - ãƒ—ãƒã‚»ã‚¹ç®¡ç†ã¨ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°
ã€ŒLinuxã®ã—ãã¿ã‚’å¦ã¶ - ãƒ—ãƒã‚»ã‚¹ç®¡ç†ã¨ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°ã€å…¬é–‹ãƒšãƒ¼ã‚¸ ã“ã¡ã‚‰ã®ãƒšãƒ¼ã‚¸ã¯Software DesignèªŒ 2009å¹´12æœˆå·ã®è¨˜äº‹ã€ŒLinuxã®ã—ãã¿ã‚’å¦ã¶ - ãƒ—ãƒã‚»ã‚¹ç®¡ç†ã¨ã‚¹ã‚±ã‚¸ãƒ¥ãƒ¼ãƒªãƒ³ã‚°ã€ã®å…¬é–‹ãƒšãƒ¼ã‚¸ã§ã™ã€‚ ã€Œãƒã‚¤ãƒ‘ãƒ¼ãƒã‚¤ã‚¶ã®ä½œã‚Šæ–¹ã€ã‚‚å…¬é–‹ä¸ã§ã™ã®ã§ã€ã“ã¡ã‚‰ã‚‚æ˜¯éžã”è¦§ãã ã•ã„ã€‚ å…¬é–‹ä¸ã®è¨˜äº‹ HTML PDF ePub mobi Kindle åŽŸç¨¿ãƒ‡ãƒ¼ã‚¿ å…¨ã¦ã®åŽŸç¨¿ãƒ‡ãƒ¼ã‚¿ã¯githubä¸Šã§å…¬é–‹ã•ã‚Œã¦ã„ã¾ã™ã€‚ Pull Requestã‚„Issuesã‚’é€šã˜ã¦æ–‡ç« ã®èª¤ã‚Šè¨‚æ£ã‚„è§£èª¬ã®è¿½è¨˜ã€å„ãƒ•ã‚©ãƒ¼ãƒžãƒƒãƒˆã®è¡¨ç¤ºã®æ”¹å–„ãªã©ã®ã‚³ãƒ³ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã‚’å—ã‘ä»˜ã‘ã¦ã„ã¾ã™ã€‚ æ”¹å–„ã•ã‚ŒãŸè¨˜äº‹ã¯éšæ™‚ã“ã®ãƒšãƒ¼ã‚¸ã«ã‚¢ãƒƒãƒ—ãƒãƒ¼ãƒ‰ã—ã¦ã„ãã¾ã™ã€‚ è¨˜äº‹ã«é–¢ã™ã‚‹ã”è³ªå• è¨˜äº‹ã‚’èªã‚“ã§ä½•ã‹ã‚ã‹ã‚‰ãªã‹ã£ãŸç‚¹ãŒã‚ã£ãŸã‚Šã€ç–‘å•ã«æ€ã£ãŸã“ã¨ãŒã‚ã‚Œã°ä»¥ä¸‹ã®é€£çµ¡å…ˆã«å•ã„åˆã‚ã›ã¦ãã ã•ã„ã€‚ Twitter: @syuu
umiyosh 2014/05/15
linux

process
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ã‚µãƒ¼ãƒã®ãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã«sysdigãŒä½¿ãˆãã† - $web->{note};
sysdig ã¨ã¯ï¼Ÿ Sysdig is open source, system-level exploration: capture system state and activity from a running Linux instance, then save, filter and analyze. Think of it as strace + tcpdump + lsof + awesome sauce. With a little Lua cherry on top. http://www.sysdig.org/ ä¸Šã«æ›¸ã„ã¦ã‚ã‚‹é€šã‚Šã€ä¸€è¨€ã§è¨€ã†ã¨ strace + tcpdump + lsof + Î±ã€‚tcpdumpã®ã‚ˆã†ã«-wã§æ›¸ãå‡ºã—ã¦-rã§èªã¿è¾¼ã‚ã‚‹ã®ãŒã‚ã‚ŠãŒãŸã„ã€‚ é«˜æ©Ÿèƒ½éŽãŽã¦ã¾ã å…¨ç„¶ä½¿ã„ã“ãªã›ã¦ãªã„ã‘ã©ã€ã±ã£ã¨è§¦ã£ãŸæ„Ÿã˜ä½¿ãˆãã†ã ãªã¨æ€ã£ãŸã‚‚ã®ã‚’ç´¹ä»‹ã€‚ 1. ãƒ—ãƒ
umiyosh 2014/04/09
linux
ãƒªãƒ³ã‚¯
Mac vs Windowså¾¹åº•æ¯”è¼ƒ ~OSå®—æ•™æˆ¦äº‰ã®æ´å²ã‚’ã²ã‚‚ã¨ã~
Macã®è‰¯ã•ãŒã‚ã‹ã‚‰ãªã™ãŽã¦ã€æ»ã«ãŸã„ è°è«–å…ƒã‚¨ãƒ³ãƒˆãƒªãƒ¼ã¯ã“ã¡ã‚‰ã€‚ ä¸¡é™£å–¶ã®ä¿¡è€…ã®çš†ã•ã‚“ã€å…ƒæ°—ã§ã™ã‹ï¼Ÿ(ãƒŽÂ´âˆ€ï½€)ãƒŽ æ¯Žåº¦ã®ã“ã¨ãªãŒã‚‰ã€Macã¨Windowsã®è«–äº‰ã‚’è¦‹ã‚‹ã¨ã‚‚ã‚“ã«ã‚‡ã‚Šã—ã¾ã™ãã€‚äººé¡žã‹ã‚‰æˆ¦äº‰ãŒé€”çµ¶ãˆã¬ç¸®å›³ãŒã€ã“ã“ã«ã€‚(Â´Ï‰`) ã—ã‹ã—ã€æœ€è¿‘ãƒ‘ã‚½ã‚³ãƒ³ã‚’ã¯ã˜ã‚ãŸãƒ¦ãƒ¼ã‚¶ã‚„ã€å…ƒã‚¨ãƒ³ãƒˆãƒªã®å¢—ç”°ã®ã‚ˆã†ãªäººã«ã¨ã£ã¦ã¯ã€ä¿¡è€…ã®è¨€è‘‰ã£ã¦ãƒ¯ã‚±ã‚ã‹ã‚ã ã¨æ€ã†ã‚“ã§ã™ã‚ˆã€‚ ãã‚“ãªã‚ã‘ã§Macã¨Windowsã®æ´å²ã‚’ã€ãªã‚‹ã¹ãå¹³æ˜“ã«æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚(Â´âˆ€ï½€) æ´å²ã‚’è¦‹è¿”ã—ã¦ã€Windowsã¨Macã®å¼·ã¿å¼±ã¿ã‚’æŠŠæ¡ã™ã‚Œã°ã€å®—æ•™æˆ¦äº‰ã®ç†è§£ãŒæ·±ã¾ã‚Šã€è‡ªåˆ†ã«ãƒ”ãƒƒã‚¿ãƒªã®ãƒ‘ã‚½ã‚³ãƒ³ãŒåˆ†ã‹ã‚‹ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚ ãŸã¶ã‚“ã€‚ å…ƒå¢—ç”°ã®ã‚¨ãƒ³ãƒˆãƒªãƒ¼ãŒWindowså¯„ã‚Šã®çµè«–ã«ãªã£ã¦ã„ã‚‹ã®ã§ã€ Macå¯„ã‚Šã®è¦–ç‚¹ã§æ›¸ã„ã¦ã¿ã‚‹äº‹ã«ã—ã¾ã—ãŸã€‚(`ãƒ»Ï‰ãƒ»Â´) ã ã‚Œã‹Windowså¯„ã‚Šã‚„ã€Linuxå¯„ã‚Šã®è¦–ç‚¹ã‚’åŠ ç†ã—ã¦ä¸‹ã•ã„ãªã€‚å½“ã‚¨ãƒ³ãƒˆãƒªã®è£œ
umiyosh 2014/03/23
mac

windows

Linux
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