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Threadã«é–¢ã™ã‚‹yassã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (104)

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yass 2017/06/26
thread

thread dump

JVM
ãƒªãƒ³ã‚¯
FlexSC-Threadsã®ç´¹ä»‹ -ãƒ—ãƒã‚°ãƒ©ãƒ ã®å¤‰æ›´ç„¡ã—ã«ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ãƒ—ãƒã‚»ã‚¹ã‚’é«˜é€ŸåŒ–
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
yass 2017/03/04
thread

linux

syscall
ãƒªãƒ³ã‚¯
ã‚¤ãƒ™ãƒ³ãƒˆã¯ã‚¹ãƒ¬ãƒƒãƒ‰ã«æ¯”ã¹ã¦ä½•æ•…ãƒ€ãƒ¡ãªã®ã‹ (Why Events Are A Bad Idea) | yunabe.jp
ä¸¦è¡Œå‡¦ç†ã‚’ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã™ã‚‹æ–¹æ³•ã¯å¤§åˆ¥ã™ã‚‹ã¨ã€ ã‚¹ãƒ¬ãƒƒãƒ‰ãªã©ã‚’åˆ©ç”¨ã—ãŸåŒæœŸå‡¦ç†çš„ãªæ›¸ãæ–¹ã¨ ã‚¤ãƒ™ãƒ³ãƒˆã‚’åˆ©ç”¨ã—ãŸéžåŒæœŸå‡¦ç†çš„ãªæ›¸ãæ–¹ãŒã‚ã‚Šã¾ã™ (ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—)ã€‚ æœ€è¿‘ C10Kå•é¡Œ ãŒæœ‰åã«ãªã£ãŸã“ã¨ã‚„ã€ Node.js ãŒæµè¡Œã£ã¦ã„ã¦ Node.js ã®ãƒ¡ãƒªãƒƒãƒˆã¨ã—ã¦ã‚¤ãƒ™ãƒ³ãƒˆãƒ¢ãƒ‡ãƒ«ã§ã‚ã‚‹ãŸã‚ C10KãŒè§£æ±ºã•ã‚Œã‚‹ã¨ã„ã†ã®ãŒä¸Šã’ã‚‰ã‚Œã¦ã„ãŸã‚Šã—ã¦ã€ ã‚¤ãƒ™ãƒ³ãƒˆãƒ¢ãƒ‡ãƒ«ã®ã‚¹ãƒ¬ãƒƒãƒ‰ã«å¯¾ã™ã‚‹å„ªä½æ€§ãŒæ³¨ç›®ã•ã‚Œã‚‹ã“ã¨ãŒå¤šã„ã‚ˆã†ã«æ€ã„ã¾ã™ã€‚ ã—ã‹ã—å€‹äººçš„ãªçµŒé¨“ã¨ã—ã¦ã€ã‚ã‚‹ç¨‹åº¦ä»¥ä¸Šè¤‡é›‘ãªãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ãå ´åˆã€ ã‚¤ãƒ™ãƒ³ãƒˆãƒ¢ãƒ‡ãƒ«ã§éžåŒæœŸå‡¦ç†ã‚’å¤šç”¨ã—ã¦ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ãã¨ã‚¹ãƒ¬ãƒƒãƒ‰ã§åŒæœŸå‡¦ç†ã‚’ä½¿ã£ã¦ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ã„ãŸå ´åˆã«æ¯”ã¹ã¦ãƒ—ãƒã‚°ãƒ©ãƒ ã®å¯èªæ€§ãƒ»ä¿å®ˆæ€§ãŒè‘—ã—ãæ‚ªããªã‚Šã€ ãƒã‚°ãŒç™ºç”Ÿã—ã‚„ã™ããªã‚‹ã‚ˆã†ã«æ„Ÿã˜ã¾ã™ã€‚ ã—ã‹ã‚‚ä¸¦è¡Œå‡¦ç†ã§èµ·ã“ã‚‹ãƒã‚°ã¯ç‰¹å®šã®å‡¦ç†ãŒç‰¹å®šã®é †åºã§å®Ÿè¡Œã•ã‚ŒãŸå ´åˆã®ã¿èµ·ã“ã‚‹ã‚ˆã†ãªã“ã¨ãŒå¤šãã€ å†ç¾æ€§ãŒä½Ž
yass 2016/09/25
concurrency

event driven

thread
ãƒªãƒ³ã‚¯
Performance without the event loop | Dave Cheney
This article is also available in Japanese, ã‚¤ãƒ™ãƒ³ãƒˆãƒ«ãƒ¼ãƒ—ãªã—ã§ã®ãƒã‚¤ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ â€“ C10Kå•é¡Œã¸ã®Goã®å›žç” This article is based on a presentation I gave earlier this year at OSCON. It has been edited for brevity and to address some of the points of feedback I received after the talk. A common refrain when talking about Go is itâ€™s a language that works well on the server; static binaries, powerful concurrency, and high per
yass 2015/08/14
Golang

concurrency

process

thread

stack

event driven

Mooreâ€™s Law

context switch

hyper-threading
ãƒªãƒ³ã‚¯
Querying Your Database from Millions of Fibers (Rather than Thousands of Threads)
Java, SQL and jOOQ. Best Practices and Lessons Learned from Writing Awesome Java and SQL Code. Get some hands-on insight on what's behind developing jOOQ.
yass 2015/06/27
JDBC

quasar

java

thread

concurrency

database
ãƒªãƒ³ã‚¯
Raw Linux Threads via System Calls
This article has a followup. Linux has an elegant and beautiful design when it comes to threads: threads are nothing more than processes that share a virtual address space and file descriptor table. Threads spawned by a process are additional child processes of the main â€œthreadâ€™sâ€ parent process. Theyâ€™re manipulated through the same process management system calls, eliminating the need for a separ
yass 2015/06/09
Linux

kernel

thread

process

assembly
ãƒªãƒ³ã‚¯
Concurrency Utilitiesã®ã€Œå†ã€ã¾ã¨ã‚ - Java8å¯¾å¿œç‰ˆ - argius note
ä»¥å‰ã€ã“ã®ã‚ˆã†ãªè¨˜äº‹ã‚’æ›¸ãã¾ã—ãŸã€‚ Concurrency Utilitiesã‚’ä½¿ã£ãŸä¸¦åˆ—å‡¦ç†ãƒ»ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã®ãŠã•ã‚‰ã„ (2013-12-26) å‰å›žã®å†…å®¹ã¯ã€Concurrency Utilitiesã ã‘ã§ãªãJavaã®ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã®è©±ã‚‚ä¸€éƒ¨å«ã‚“ã§ã„ã¾ã—ãŸãŒã€ä»Šå›žã¯ã€Concurrency Utilitiesã ã‘ã«ãƒ•ã‚©ãƒ¼ã‚«ã‚¹ã—ã¦ã€å…¨ä½“ãŒåˆ†ã‹ã‚‹ã‚ˆã†ã«æ•´ç†ã—ã¦ã¾ã¨ã‚ç›´ã—ã¾ã—ãŸã€‚ ç›®æ¬¡ æ¦‚è¦ æº–å‚™ ã‚¿ã‚¹ã‚¯ãƒ»ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ (Executor) åŒæœŸã‚ãƒ¥ãƒ¼ ã‚·ãƒ³ã‚¯ãƒãƒŠã‚¤ã‚¶ãƒ¼ ä¸¦è¡Œå‡¦ç†ã‚³ãƒ¬ã‚¯ã‚·ãƒ§ãƒ³ æ™‚é–“å˜ä½ ã‚¢ãƒˆãƒŸãƒƒã‚¯å€¤åž‹ã¨ã‚¢ãƒˆãƒŸãƒƒã‚¯æ“ä½œ ãƒãƒƒã‚¯ãƒ»ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ æ¦‚è¦ ä»Šå›žã¯ã€Concurrency Utilitiesã®APIã‚’ã„ãã¤ã‹ã®ã‚°ãƒ«ãƒ¼ãƒ—ã«åˆ†é¡žã—ã€ãã‚Œãžã‚Œã®ã‚°ãƒ«ãƒ¼ãƒ—ã®ä¸»è¦ãªæ©Ÿèƒ½ã‚’ã€Œåºƒãæµ…ãã€ç´¹ä»‹ã™ã‚‹ã€ã¨ã„ã†å½¢å¼ã§ã¾ã¨ã‚ã¦ã„ã¾ã™ã€‚ ãƒ‘ãƒƒã‚±ãƒ¼ã‚¸å˜ä½ã§åˆ†ã‘ã€ãã‚Œã‹ã‚‰java.util.con
yass 2015/06/07
concurrency

java

java8

thread
ãƒªãƒ³ã‚¯
Concurrency Utilitiesã‚’ä½¿ã£ãŸä¸¦åˆ—å‡¦ç†ãƒ»ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã®ãŠã•ã‚‰ã„ - argius note
ã“ã®è¨˜äº‹ã¯ã€å€‹äººçš„ãªãŠã•ã‚‰ã„ã®ãŸã‚ã®ã€Java Concurrency Utilitiesã®ä¸€éƒ¨ã‚’ä½¿ã£ãŸã‚µãƒ³ãƒ—ãƒ«ã¨ãƒ¡ãƒ¢ã§ã™ã€‚ ç›®æ–°ã—ã„ã‚‚ã®ã¯ç‰¹ã«ã‚ã‚Šã¾ã›ã‚“ã€‚ è¨˜äº‹å†…ã®ã‚µãƒ³ãƒ—ãƒ«ã¨APIãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆå‚ç…§ã¯Java7(Java SE 7)ã‚’åŸºæº–ã«ã—ã¦ã„ã¾ã™ãŒã€Java Concurrency Utilitiesè‡ªä½“ã¯ä¸€éƒ¨ã‚’é™¤ã„ã¦Java5(Java SE 5.0)ã‹ã‚‰ä½¿ãˆã‚‹ã‚ˆã†ã«ãªã£ã¦ã„ã¾ã™ã€‚ ã‚ã¨ã€ã„ã¤ã‚‚ã®ã“ã¨ã§ã™ãŒã€ç”»åƒãŒã‚ã‚Šã¾ã›ã‚“ã€‚ è¿½è¨˜(2014-01-05): ã“ã®æ©Ÿèƒ½ã®å‘¼ç§°ã¯ (Java) Concurrency Utilities ãŒå…¬å¼ã§ã€ã“ã®è¨˜äº‹å†…ã®"Utility"ã¨ã„ã†ã®ã¯æ£ç¢ºã§ã¯ãªã„ï¼‹æ··åœ¨ã—ã¦ã„ã¾ã™ã®ã§ã”æ³¨æ„ãã ã•ã„ã€‚ã”ã‚ã‚“ãªã•ã„ã€‚ è¿½è¨˜(2014-08-15): ã“ã®è¨˜äº‹ã¯ã€ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰"Java Concurrency Utilities"ã§Googleæ¤œç´¢ã—ãŸæ™‚ã«2ç•ª
yass 2015/06/07
java

concurrency

thread
ãƒªãƒ³ã‚¯
Javaã®ã‚·ã‚¹ãƒ†ãƒ ã‚¹ãƒ¬ãƒƒãƒ‰ã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ãŸ (Java8) - argius note
ã‚·ã‚¹ãƒ†ãƒ ã‚¹ãƒ¬ãƒƒãƒ‰ã«ã¤ã„ã¦ã€ã‚ã¾ã‚ŠçŸ¥ã‚‰ãªã‹ã£ãŸã®ã§ã€èª¿ã¹ã¦ã¿ã¾ã—ãŸã€‚ ãã‚Œä»¥å¤–ã«ã‚‚ã€APIã§ç”Ÿæˆã•ã‚Œã‚‹ã‚¹ãƒ¬ãƒƒãƒ‰ã‚„ã€ã‚¹ãƒ¬ãƒƒãƒ‰ã‚°ãƒ«ãƒ¼ãƒ—ã«ã¤ã„ã¦ã‚‚ã€å°‘ã—è§¦ã‚Œã¦ã„ã¾ã™ã€‚ â€»GrepCodeã¯2018å¹´5æœˆé ƒã‹ã‚‰ã‚µãƒ¼ãƒ“ã‚¹ãŒåˆ©ç”¨ã§ããªããªã£ã¦ã„ã¾ã™ã€‚è¨˜äº‹ä¸ã®ãƒªãƒ³ã‚¯ã¯GrepCodeã®ã‚‚ã®ãŒãã“ãã“å¤šã„ã®ã§ã€ã”æ³¨æ„ãã ã•ã„ã€‚ å‚è€ƒãƒªãƒ³ã‚¯ HotSpot Runtime Overview - OpenJDK JVM Internals (JamesDBloom - Blog) Java SE 8 APIä»•æ§˜ GC: openjdk-8-b132.jar - GrepCode Java Project Source Mirror of OpenJDK repositories - GitHub ç›®æ¬¡ ã¯ã˜ã‚ã« å®Ÿè¡Œç’°å¢ƒ ã‚·ã‚¹ãƒ†ãƒ ã‚¹ãƒ¬ãƒƒãƒ‰ã®åç§°ã¨ç°¡å˜ãªèª¬æ˜Ž APIã‚’ä½¿ç”¨ã—ãŸã¨ãã®ã‚¹ãƒ¬ãƒƒãƒ‰ ãŠã‚ã‚Šã« ã¯ã˜ã‚ã« ã‚·
yass 2015/06/07
java

Thread

JVM
ãƒªãƒ³ã‚¯
CGIã€ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã€ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰+ã‚¤ãƒ™ãƒ³ãƒˆé§†å‹•ãã—ã¦Node.js - wyukawa's diary
åƒ•ã¯Node.jsã¨ã¯ãã‚“ãªã«é–¢ã‚ã‚Šã¯ãªãã¦shibã‚’ä½¿ã£ã¦ã„ã‚‹ã®ãŒå”¯ä¸€ã®æŽ¥ç‚¹ãªã‚“ã ã‘ã©ã€http://mozaic.fm/post/99334017903/10-node-jsã‚’èžã„ã¦ãŸã‚‰å¤§å¤‰ã«é¢ç™½ã‹ã£ãŸã®ã§é¢ç™½ã‹ã£ãŸéƒ¨åˆ†ã«ã¤ã„ã¦æ›¸ãã€‚ ã“ã®podcastã¯å…¨éƒ¨ã§2æ™‚é–“ä»¥ä¸Šã‚ã£ã¦å…¨éƒ¨èžãã®ã¯ãªã‹ãªã‹è¾›ã„ã‚“ã ã‘ã©wã€€åƒ•ãŒé¢ç™½ã„ã¨æ€ã£ãŸéƒ¨åˆ†ã¯CGI -> ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ -> ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰+ã‚¤ãƒ™ãƒ³ãƒˆé§†å‹•ã€€ã¨ã„ã†æŠ€è¡“ã®æ´å²çš„ãªçµŒç·¯ã®ã‚ãŸã‚Šã§ã™ã€‚ ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆãŒå‡ºãŸå½“åˆã¯åŒæ™‚ã‚¢ã‚¯ã‚»ã‚¹æ•°ã‚‚å°‘ãªã„ã®ã§CGIãŒä¸€èˆ¬çš„ã§ãƒªã‚¯ã‚¨ã‚¹ãƒˆãŒãã‚‹ãŸã³ã«ãƒ—ãƒã‚»ã‚¹ãŒèµ·å‹•ã—ã¦ã•ã°ãã¨ã„ã†ãƒ¢ãƒ‡ãƒ«ã§å…¨ç„¶å•é¡ŒãŒãªã‹ã£ãŸã€‚ ãã‚ŒãŒECã‚µã‚¤ãƒˆã¨ã‹å‡ºã¦ãã¦åŒæ™‚ã‚¢ã‚¯ã‚»ã‚¹æ•°ãŒå¢—ãˆã¦ãã‚‹ã¨CGIãƒ¢ãƒ‡ãƒ«ãŒè¾›ããªã£ã¦ããŸã®ã§ã€ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’ã‚¹ãƒ¬ãƒƒãƒ‰ã§ã•ã°ããƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ãƒ¢ãƒ‡ãƒ«ãŒç™»å ´ã—ãŸã€‚ ä½™è«‡ã ãŒåƒ•ãŒ2002å¹´ã«ç¤¾ä¼šäººã«ãªã£ã¦Servl
yass 2014/10/12
" åƒ•ãŒé¢ç™½ã„ã¨æ€ã£ãŸéƒ¨åˆ†ã¯CGI -> ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ -> ã‚·ãƒ³ã‚°ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰+ã‚¤ãƒ™ãƒ³ãƒˆé§†å‹•ã€€ã¨ã„ã†æŠ€è¡“ã®æ´å²çš„ãªçµŒç·¯ã®ã‚ãŸã‚Šã§ã™ã€‚"

node.js

concurrency

thread

c10k
ãƒªãƒ³ã‚¯
ã‚ãªãŸã¨ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ— - ç¬¬å…«å›ž #æ¸‹è°·java
ç¬¬å…«å›ž #æ¸‹è°·java ã§ç™ºè¡¨ã—ãŸã€Œã‚ãªãŸã¨ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã€ã§ã™ã€‚ ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®ä½¿ã„ã¿ã¡ã€å–ã‚Šæ–¹ã€èªã¿æ–¹ã«ã¤ã„ã¦èª¬æ˜Žã—ã¦ã„ã¾ã™ã€‚ ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã“ã‚ããªã„ã€‚
yass 2014/09/21
java

thread

dump
ãƒªãƒ³ã‚¯
ã‚¹ã‚¿ãƒƒã‚¯ãƒˆãƒ¬ãƒ¼ã‚¹/ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®èªã¿æ–¹ ãã®1 â€“ VM å†…éƒ¨ã‚¹ãƒ¬ãƒƒãƒ‰ã¨ main ã‚¹ãƒ¬ãƒƒãƒ‰ â€“ yusuke.blog
ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®å–ã‚Šæ–¹ã¯å‰ã«èª¬æ˜Žã—ãŸé€šã‚Šã§ã™ã€‚ #äºŒå¹´è¿‘ãå‰ã§ã™ãŒãƒ»ãƒ»ãƒ» ã—ã‹ã—ã€ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã¯å–å¾—ã—ãŸã ã‘ã§ã¯å½¹ã«ç«‹ã¡ã¾ã›ã‚“ã€‚ ã‚‚ã¡ã‚ã‚“ã€ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã¯è§£æžã—ã¦åˆã‚ã¦ãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°ã‚„ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã«å½¹ç«‹ã¤ã‚‚ã®ã§ã™ã€‚ ãã“ã§ã€ä»Šå›žã‹ã‚‰ã¯å…·ä½“çš„ã«ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®ä¸èº«ã‚’è¦‹ã¦ã„ãã¾ã—ã‚‡ã†ã€‚ èª¬æ˜Žã«ä½¿ã†ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã“ã‚“ãªæ„Ÿã˜ã€‚èµ·å‹•ã—ãŸã‚‰ "Hello World! ã¨è¡¨ç¤ºã—ã¦10ç§’é–“ã‚¹ãƒªãƒ¼ãƒ—ã™ã‚‹ã¨ã„ã†ç°¡å˜ãªã‚‚ã®ã€‚ public class ThreadTest1{ public static void main(String args[]) throws Exception { System.out.println("Hello World!"); method1(); } private static void method1() throws Exception { Threa
yass 2014/07/05
"JVM å†…ã«å˜åœ¨ã™ã‚‹å…¨ã¦ã®ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ãƒ€ãƒ³ãƒ—ã—ãŸã‚‚ã®ã§ã™ã€‚ ä¸Šè¨˜ã®ä¾‹ã§ã¯"Low Memory Detector", "CompilerThread0", "Signal Dispatcher", "Finalizer", "Reference Handler", "main", "VM Thread", "VM Periodic Task Thread" ã¨ã€è¨ˆï¼™å€‹ã®ã‚¹ãƒ¬ãƒƒãƒ‰ãŒã‚ã‚‹ "

Java

JVM

thread

dump
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Five things that make Go fast | Dave Cheney
Anthony Starks has remixed my original Google Present based slides using his fantastic Deck presentation tool. You can check out his remix over on his blog, mindchunk.blogspot.com.au/2014/06/remixing-with-deck. I was recently invited to give a talk at Gocon, a fantastic Go conference held semi-annually in Tokyo, Japan. Gocon 2014 was an entirely community-run one day eventÂ combining training and a
yass 2014/06/08
golang

cache

memory

performance

concurrency

thread

stack

goroutine

gc
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The document discusses various aspects of concurrency in Java such as synchronized blocks, volatile variables, and reordering issues. It provides examples of how to properly synchronize access to shared mutable data using locks and compares the behavior of synchronized and volatile. The final sections cover atomicity in Java and how the volatile keyword prevents instruction reordering probl ems but
yass 2014/05/02
java

concurrency

volatile

thread
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Comparision of different concurrency models: Actors, CSP, Disruptor and Threads
yass 2014/04/21
java

concurrency

actor

CSP

disruptor

thread

akka
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Webã‚µãƒ¼ãƒã®ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã§ã®å®Ÿè£…ã«ãŠã‘ã‚‹å„ªä½æ€§ã‚’Linux Kernel 3.3ã®ã‚½ãƒ¼ã‚¹ã‹ã‚‰èªã¿è§£ã
äººé–“ã¨ã‚¦ã‚§ãƒ–ã®æœªæ¥ï¼ˆæ—§ï¼‰ ã€Œã‚¦ã‚§ãƒ–ã®æ´å²ã¯äººé¡žã®æ´å²ã®ç¹°ã‚Šè¿”ã—ã€ã¨ã„ã†è¦³ç‚¹ã‹ã‚‰è‰²ã€…å‹‰å¼·ã—ã¦ã„ã¾ã™ã€‚2014å¹´ã¾ã§ã®äººé–“ã¨ã‚¦ã‚§ãƒ–ã®æœªæ¥ã®æ—§ãƒ–ãƒã‚°ã§ã™ã€‚ è¡¨é¡Œã®é€šã‚Šã€ç¾è¡Œã®ã‚«ãƒ¼ãƒãƒ«ã®å®Ÿè£…ã«ãŠã„ã¦ã€ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã¨ãƒžãƒ«ãƒãƒ—ãƒã‚»ã‚¹ã§ã®å®Ÿè£…ã®å„ªä½æ€§ã¯ã©ã†ã„ã†æ‰€ã«ã‚ã‚‹ã®ã‹ã‚’çŸ¥ã‚ŠãŸã„ã€ã¨ã„ã†ã®ãŒä»Šå›žã®èª¿æŸ»ã®æ„å›³ã ã€‚ ãã®ãŸã‚ã«ã€å‰æçŸ¥è˜ã¨ã—ã¦ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ã¨ãƒžãƒ«ãƒãƒ—ãƒã‚»ã‚¹ã®ç‰¹å¾´ã«ã¤ã„ã¦ã€ã‚«ãƒ¼ãƒãƒ«ã®ã‚½ãƒ¼ã‚¹ã‚’è¦‹ã¦ã„ããŸã„ã¨æ€ã†ã€‚ã‚«ãƒ¼ãƒãƒ«ã®æµ·ã«é£›ã³è¾¼ã‚€ã«ã¯ã€ã‚„ã¯ã‚Šæœ€æ–°ã®Linux Kernel 3.3ã®ã‚½ãƒ¼ã‚¹ã‚’é¸æŠžã™ã‚‹ã“ã¨ã«ã—ãŸã€‚å‰ç½®ãã®æ®µéšŽã§å°‘ã—é•·ããªã£ã¦ã—ã¾ã„ãã†ã ã€‚ã§ã¯ã‚«ãƒ¼ãƒãƒ«ã®æµ·ã«é£›ã³è¾¼ã¿ãŸã„ã¨æ€ã†ã€‚ ã¨ã¯ã„ã£ã¦ã‚‚ã€ã¾ãšã¯æœ€åˆã®ä¸€æ©ãŒå¿…è¦ãªã®ã§ã€å½“ãŸã‚Šã‚’ã¤ã‘ã‚ˆã†ã¨æ€ã†ã€‚ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã¯ã€ ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ ãƒžãƒ«ãƒãƒ—ãƒã‚»ã‚¹ ã‚³ãƒ³ãƒ†ã‚ã‚¹ãƒˆã‚¹ã‚¤ãƒƒãƒ ãƒ¡ãƒ¢ãƒªç©ºé–“ã®å…±æœ‰ TLBï¼ˆãƒˆãƒ©ãƒ³ã‚¹ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ãƒ»ãƒ«ãƒƒã‚¯ã‚¢ã‚µã‚¤ãƒ‰ãƒ»ãƒ
yass 2014/03/10
" ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’clone()ã™ã‚‹éš›ã«CLONE_VMãƒ•ãƒ©ã‚°ã‚’æ¸¡ã™ã“ã¨ã§ãƒ¡ãƒ¢ãƒªç©ºé–“ã‚’å…±æœ‰ã—ã¦ã„ã‚‹å ´åˆï¼ˆã¤ã¾ã‚Šã¯ãƒžãƒ«ãƒã‚¹ãƒ¬ãƒƒãƒ‰ï¼‰ã¯ã€ã‚³ãƒ³ãƒ†ã‚ã‚¹ãƒˆã‚¹ã‚¤ãƒƒãƒæ™‚ã«TLBãƒ•ãƒ©ãƒƒã‚·ãƒ¥ãŒã•ã‚Œãªã„ã“ã¨ã«ãªã‚‹ "

Kernel

thread

TLB

process

concurrency

context swich

folk
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rubyã‚¹ãƒ¬ãƒƒãƒ‰ ã‚¹ãƒ¬ãƒƒãƒ‰ã¯ã€Œã¿ã‚“ãªä¸€æ–‰ã«å‹•ãã€ã¨ã„ã†ã®ãŒå»ºå‰ã ãŒã€å®Ÿéš›ã«ã¯å°‘ã—ã®æ™‚é–“ãš ã¤é †ç•ªã«å‹•ã„ã¦ã„ã‚‹ã‚ã‘ã ã€‚åŽ³å¯†ã«è¨€ãˆã°ãƒžãƒ«ãƒCPUã®ãƒžã‚·ãƒ³ã§ãã‚Œãªã‚Šã«å·¥ å¤«ã™ã‚Œã°åŒæ™‚ã«äºŒã¤å‹•ã„ãŸã‚Šã‚‚ã§ãã‚‹ãŒã€ãã‚Œã§ã‚‚CPUã®æ•°ä»¥ä¸Šã®ã‚¹ãƒ¬ãƒƒãƒ‰ãŒ ã‚ã‚Œã°ã‚„ã¯ã‚Šé †ç•ªã«å‹•ã‹ãªã‘ã‚Œã°ãªã‚‰ãªã„ã€‚ ã¤ã¾ã‚Šã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ä½œã‚Šå‡ºã™ãŸã‚ã«ã¯ã©ã“ã‹ã§èª°ã‹ãŒã‚¹ãƒ¬ãƒƒãƒ‰ã‚’åˆ‡ã‚Šæ›¿ãˆã¦ã‚„ã‚‰ ãªã„ã¨ã„ã‘ãªã„ã‚ã‘ã ãŒã€ãã®æ‰‹æ³•ã«ã¯å¤§ããåˆ†ã‘ã¦äºŒç¨®é¡žã‚ã‚‹ã€‚ ã‚«ãƒ¼ãƒãƒ«ãƒ¬ãƒ™ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã¨ ãƒ¦ãƒ¼ã‚¶ãƒ¬ãƒ™ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã ã€‚ã“ã‚Œã¯ã©ã¡ã‚‰ã‚‚èªã‚“ã§å—ã®å¦‚ãã€ã‚¹ ãƒ¬ãƒƒãƒ‰ã¨ã„ã†ã‚‚ã®ã‚’ã‚«ãƒ¼ãƒãƒ«ã§ä½œã‚‹ã‹ãƒ¦ãƒ¼ã‚¶ãƒ¬ãƒ™ãƒ«ã§ä½œã‚‹ã‹ã¨ã„ã†é•ã„ã§ã‚ã‚‹ã€‚ ã‚«ãƒ¼ãƒãƒ«ãƒ¬ãƒ™ãƒ«ãªã‚‰ãƒžãƒ«ãƒCPUã‚’ç”Ÿã‹ã—ã¦è¤‡æ•°ã®ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’åŒæ™‚ã«å‹•ã‹ã—ãŸã‚Š ã‚‚ã§ãã‚‹ã€‚ ã§ã¯rubyã®ã‚¹ãƒ¬ãƒƒãƒ‰ã¯ã©ã†ãªã®ã‹ã¨è¨€ãˆã°ã€ã“ã‚Œã¯ãƒ¦ãƒ¼ã‚¶ãƒ¬ãƒ™ãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã§ ã‚ã‚‹ã€‚ ãã—ã¦ï¼ˆãã‚Œã‚†ãˆï¼‰åŒæ™‚ã«å‹•ã‘ã‚‹ã‚¹ãƒ¬ãƒƒãƒ‰ã¯åŽ³å¯†ã«ãŸã ä¸€ã¤ã¨åˆ¶é™
yass 2014/03/09
" ãã“ã§rubyã®ã‚¹ãƒ¬ãƒƒãƒ‰ã¯ã©ã†ã‹ã¨è¨€ã†ã¨ã€Rubyãƒ¬ãƒ™ãƒ«ã§ã¯ãƒ—ãƒªã‚¨ãƒ³ãƒ—ãƒ†ã‚£ãƒ–ã§ã€ Cãƒ¬ãƒ™ãƒ«ã§ã¯ãƒŽãƒ³ãƒ—ãƒªã‚¨ãƒ³ãƒ—ãƒ†ã‚£ãƒ–ã§ã‚ã‚‹ã€‚ã¤ã¾ã‚ŠCã®ã‚³ãƒ¼ãƒ‰ã‚’æ›¸ã„ã¦ã„ã‚‹ã¨ãã¯ ã‚¹ãƒ¬ãƒƒãƒ‰ãŒåˆ‡ã‚Šæ›¿ã‚ã‚‹ã‚¿ã‚¤ãƒŸãƒ³ã‚°ã‚’ã»ã¼ç¢ºå®Ÿã«ç‰¹å®šã§ãã‚‹ã€‚"

ruby

preemptive

thread

context switch
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Many Blocking VS Single Non-Blocking Workers
yass 2014/02/23
concurrency

thread

event driven

nio

async

context switch
ãƒªãƒ³ã‚¯
Thousands of Threads and Blocking I/O
This document summarizes a talk about different server models using synchronous I/O (thread-per-connection) versus asynchronous I/O (NIO). The talk discusses the evolution of server designs from simple multithreaded models to NIO-based approaches. It presents arguments for both approaches but notes that benchmarks showed synchronous I/O to be faster than NIO in some cases, contradicting common bel
yass 2014/02/23
concurrency

thread

async

nio

c10k

context switch
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Writing Interactive Web Applications with Web Actors
January 28, 2014 Writing Interactive Web Applications with Web Actors By Ron The actor model defined by Carl Hewitt and then evolved and popularized (well, relatively popularized) by the Erlang programming language, has become a very appropriate choice for designing certain kinds of software. Those groups of isolated processes communicating with one another by passing messages back and forth are a
yass 2014/02/23
" This is just to show how simple it is to run blocking operations in web actors (and Comsat in general). But these calls do not block the currentÂ OSÂ thread â€“ only the fiber running the actor, and you can run hundreds of thousands and even millions of fibers on a singleÂ JVMinstance. "

comsat

quasar

jvm

thread

actor
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