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Linuxã®éžåŒæœŸIO(libaio)ã‚’ä½¿ã†ä¸Šã§ã®æ³¨æ„ç‚¹ | Everyday Deadlock
Linuxã§éžåŒæœŸIOã‚’å®Ÿè¡Œã™ã‚‹æ–¹æ³•ã¨ã—ã¦ã¯ POSIX AIO (glibcã«ã‚ˆã‚‹å®Ÿè£…) libaio (Linuxã‚«ãƒ¼ãƒãƒ«å†…ã®å®Ÿè£…) ã®2ã¤ãŒã‚ã‚Šã¾ã™ã€‚POSIX AIOã‚’ä½¿ã£ãŸéžåŒæœŸIOã¯ã€å®Ÿæ…‹ã¨ã—ã¦ã¯è£ã§ã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ç”Ÿæˆã—ã¦pread(2)/pwrite(2)ã‚’ä½¿ã£ã¦IOã‚’ç™ºè¡Œã—ã¦ã„ã‚‹ã ã‘ãªã®ã§ã€æ€§èƒ½ãŒã‚ã¾ã‚Šã‚ˆã‚ã—ãã‚ã‚Šã¾ã›ã‚“ã€‚ãã®ãŸã‚ã€ãƒãƒ¼ã‚¿ãƒ“ãƒªãƒ†ã‚£ãŒå¿…è¦ã§ãªã„å ´åˆã«ã¯ã€Linuxãƒã‚¤ãƒ†ã‚£ãƒ–ã®libaioã‚’ä½¿ã†ã“ã¨ãŒå¦¥å½“ã§ã™ã€‚ ã—ã‹ã—ãªãŒã‚‰ã€2011å¹´ç¾åœ¨ã“ã®libaioã«é–¢ã—ã¦ã¯ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãŒå……åˆ†ã«æ•´å‚™ã•ã‚Œã¦ãŠã‚‰ãšã€manpageã‚‚èª¤ã£ãŸè¨˜è¿°ãŒå¤šã€…è¦‹å—ã‘ã‚‰ã‚Œã‚‹ã¨ã„ã†æ®‹å¿µãªçŠ¶æ³ã«ã‚ã‚Šã¾ã™ã€‚ç§ã‚‚å®Ÿéš›ã«libaioã‚’ä½¿ãŠã†ã¨ã—ã¦ã€ã‚ˆãã‚ã‹ã‚‰ãªã„ã‚¨ãƒ©ãƒ¼ã«å»¶ã€…è‹¦ã—ã‚ã‚‰ã‚Œã¾ã—ãŸã€‚ã“ã®ã‚¨ãƒ³ãƒˆãƒªã§ã¯ã€libaioã®åŸºæœ¬çš„ãªä½¿ã„æ–¹ã‹ã‚‰ã€libaioã‚’ä½¿ã†ä¸Šã§ã¯ã¾ã‚ŠãŒã¡ãªãƒãƒƒãƒ‰ãƒŽã‚¦ãƒã‚¦ãªã©ã‚’ã¾ã¨ã‚ã¦
hiromark 2014/03/03
linux

aio
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asynchronous disk I/O | libtorrent blog Libtorrent experience - the poor state of async disk IO | Hacker News libtorrentã®ä½œè€…ãŒã€ãƒ‡ã‚£ã‚¹ã‚¯I/Oã‚’ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚’å‘ä¸Šã•ã›ã‚‹ãŸã‚ã«éžåŒæœŸI/Oã‚’è©¦ã—ãŸçµæžœã€ã©ã®ç’°å¢ƒã§ã‚‚æ®‹å¿µãªã®ã§ã€ãƒ–ãƒãƒƒã‚¯I/Oã‚’ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ—ãƒ¼ãƒ«ã§è¡Œã†æ“¬ä¼¼éžåŒæœŸI/Oã§å®Ÿè£…ã—ãŸã¨ãƒ–ãƒã‚°ã‚’æ›¸ã„ã¦ã„ã‚‹ã€‚ãã®å•é¡Œã«ã¤ã„ã¦ã€Hacker Newsã§ã‚‚è°è«–ã•ã‚Œã¦ã„ã‚‹ã€‚ éžåŒæœŸI/Oã¯ã€è©±ã‚’èžãã¨ãŸã®ã‚‚ã—ã„æ©Ÿèƒ½ã«æ€ãˆã‚‹ã€‚èªã¿æ›¸ããŒå®Œäº†ã™ã‚‹ã¾ã§ãƒ–ãƒãƒƒã‚¯ã›ãšã«ã€å®Œäº†ã—ãŸã‚‰OSãŒé€šçŸ¥ã™ã‚‹ã¨ã„ã†ä»•çµ„ã¿ã ã€‚ å•é¡Œã¯ã€ãã®å®Ÿè£…ãŒã©ã®ç’°å¢ƒã§ã‚‚è²§å¼±ã ã¨ã„ã†äº‹ã ã€‚ ç’°å¢ƒã¨ã„ã†ã®ã¯ã€ä¸»ã«OSå´ã®ã“ã¨ã ã€‚å¤šãã®ãƒ¢ãƒ€ãƒ³ãªOSã¯éžåŒæœŸI/Oã‚’æä¾›ã—ã¦ã„ã‚‹ã€‚ç‰¹ã«è‘—åãªã®ãŒã¿ã£ã¤ã‚ã‚‹ã€‚ Linux A
hiromark 2014/03/03
aio

linux
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Linuxã®éžåŒæœŸI/Oã«ã¤ã„ã¦ - takkan_mã®No planãªæ—¥å¸¸
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hiromark 2014/03/03
aio

linux
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Linuxã§aio - ï¼ˆã²ï¼‰ãƒ¡ãƒ¢
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hiromark 2014/03/03
linux

aio
ãƒªãƒ³ã‚¯
Man page of AIO
hiromark 2014/03/03
linux

programming

aio
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hiromark 2014/02/28
network

aio
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