[B! aio] hirose31ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

hirose31 id:hirose31

aioã«é–¢ã™ã‚‹hirose31ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (26)

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Linuxã«ãŠã‘ã‚‹éžåŒæœŸIOã®å®Ÿè£…ã«ã¤ã„ã¦ - Qiita
ã¯ã˜ã‚ã« Linux 5.1ã«æ–°ã—ã„éžåŒæœŸIOã®ä»•çµ„ã¿ã¨ã—ã¦io_uringãŒãƒžãƒ¼ã‚¸ã•ã‚Œã¦ã‹ã‚‰æ—¢ã«1å¹´ä»¥ä¸ŠçµŒã£ã¦ã—ã¾ã„ã¾ã—ãŸãŒã€ã“ã‚Œã¾ã§ã®Linuxã«ãŠã‘ã‚‹éžåŒæœŸIOã®ä½¿ã„æ–¹ã‚„å®Ÿè£…ã‚’è¦‹ã¦ã„ããªãŒã‚‰ã€io_uringãŒç™»å ´ã—ãŸèƒŒæ™¯ã‚„Linux AIO(libaio)ã®å•é¡Œç‚¹ã‚’ã©ã®ã‚ˆã†ã«è§£æ±ºã—ã¦ã„ã‚‹ã®ã‹ã«ã¤ã„ã¦ã¾ã¨ã‚ã¾ã—ãŸã€‚ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®æ›¸ãæ–¹ã«ã¤ã„ã¦ã¯å¤§ã¾ã‹ã«ã—ã‹èª¬æ˜Žã—ã¦ã„ãªã„ã®ã§ã€ãã‚Œã«ã¤ã„ã¦ã¯manãƒšãƒ¼ã‚¸ã‚„åˆ¥ã®è¨˜äº‹ã‚’å‚ç…§ã—ã¦ãã ã•ã„ã€‚ ã¾ãŸIOã¨ã„ã†ç¯„å›²ãŒåºƒã„ã®ã§ã™ãŒã€ã“ã“ã§ã¯ãƒ–ãƒãƒƒã‚¯ãƒ‡ãƒã‚¤ã‚¹ä¸Šã®ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ ã«ãŠã‘ã‚‹é€šå¸¸ãƒ•ã‚¡ã‚¤ãƒ«ã«å¯¾ã™ã‚‹read/writeã«ã¤ã„ã¦è€ƒãˆã¦ã„ã¾ã™(ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¯è€ƒãˆã¦ã„ãªã„ã®ã§epollã®è©±ã¯ãªã„ã§ã™)ã€‚ å‰æçŸ¥è˜ ç°¡å˜ã«å‰æã¨ãªã‚‹è©±ã‚’ãŠã•ã‚‰ã„ã—ã¾ã™ã€‚ åŒæœŸIOã¨éžåŒæœŸIO IOã‚’è¡Œã†ã‚·ã‚¹ãƒ†ãƒ ã‚³ãƒ¼ãƒ«ã¨ã—ã¦ã™ãã«æ€ã„ã¤ãã®ã¯read(2)/write(
hirose31 2020/12/07
aio
ãƒªãƒ³ã‚¯
SystemTapã§MySQL 5.5ã®Disk I/Oã‚’åˆ†æžã™ã‚‹ - SH2ã®æ—¥è¨˜
2010å¹´1æœˆã®è¨˜äº‹SystemTapã§MySQLã®Disk I/Oã‚’åˆ†æžã™ã‚‹ã®ç¶šãã§ã™ã€‚ä»¥å‰ä½œæˆã—ãŸSystemTapã‚¹ã‚¯ãƒªãƒ—ãƒˆã¯ã€å®Ÿã¯MySQL 5.5ã®Disk I/Oã‚’åˆ†æžã™ã‚‹ã“ã¨ãŒã§ãã¾ã›ã‚“ã§ã—ãŸã€‚ã¨ã„ã†ã®ã‚‚ã€MySQL 5.5ã‹ã‚‰InnoDBãŒéžåŒæœŸI/Oã‚’è¡Œã†ã‚ˆã†ã«ãªã£ãŸã®ã§ã™ãŒã€ä»¥å‰ã®ã‚¹ã‚¯ãƒªãƒ—ãƒˆã¯éžåŒæœŸI/Oã«å¯¾å¿œã—ã¦ã„ãªã‹ã£ãŸãŸã‚ã§ã™ã€‚æœ¬æ—¥ã¯MySQL 5.5ã«ãŠã‘ã‚‹InnoDBã®éžåŒæœŸI/Oã«ã¤ã„ã¦ã€ç¢ºèªã—ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ éžåŒæœŸI/Oã¨ã¯ éžåŒæœŸI/Oã¨ã¯ã€I/Oå‡¦ç†ã‚’ãƒ–ãƒãƒƒã‚¯ã•ã‚Œã‚‹ã“ã¨ãªã—ã«è¡Œã†æ–¹å¼ã®ã“ã¨ã§ã™ã€‚é€šå¸¸ã®I/Oå‡¦ç†ã¯ãã‚ŒãŒå®Œäº†ã™ã‚‹ã¾ã§å¾…ãŸã•ã‚Œã¦ã—ã¾ã†ã®ã§ã™ãŒã€éžåŒæœŸI/Oã‚’ç”¨ã„ã‚‹ã“ã¨ã§I/Oå‡¦ç†ã®å®Œäº†ã‚’å¾…ã¤ã“ã¨ãªã—ã«ä»–ã®å‡¦ç†ã‚’é€²ã‚ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚ä»¥ä¸‹ã®ã‚¦ã‚§ãƒ–ã‚µã‚¤ãƒˆã§ã¨ã¦ã‚‚è©³ã—ãè§£èª¬ã•ã‚Œã¦ã„ã¾ã™ã€‚ ãƒãƒƒãƒ•ã‚¡ã‚ãƒ£ãƒƒã‚·ãƒ¥ã¨AIOï¼ˆ1ï¼‰ - O'Reil
hirose31 2011/11/21
mysql

systemtap

aio
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ãƒãƒƒãƒ•ã‚¡ã‚ãƒ£ãƒƒã‚·ãƒ¥ã¨AIOï¼ˆ1ï¼‰
ãƒ—ãƒã‚»ã‚¹ãŒãƒ–ãƒãƒƒã‚¯ã™ã‚‹è¦å› ã®ä¸€ã¤ã«ãƒ•ã‚¡ã‚¤ãƒ«I/OãŒã‚ã‚Šã¾ã™ã€‚ã“ã‚Œã‚’åŒæœŸI/Oã¨è¨€ã„ã¾ã™ãŒã€POSIXã§ã¯AIOï¼ˆéžåŒæœŸ I/Oã€Asynchronous I/Oï¼‰ã‚‚å®šç¾©ã—ã¦ãŠã‚Šã€I/Oä¸ã§ã‚‚ãƒ—ãƒã‚»ã‚¹ãŒãƒ–ãƒãƒƒã‚¯ã›ãšä»–ã®å‡¦ç†ã‚’é€²ã‚ã‚‰ã‚Œã‚‹ã‚ˆã†ã«ãªã‚Šã¾ã™ã€‚ æœ¬è¨˜äº‹ã§ã¯ãƒãƒƒãƒ•ã‚¡ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‹ã‚‰ãƒ•ã‚¡ã‚¤ãƒ« I/Oã‚’è§£èª¬ã—ã€Linuxã®io_submit(2)ã‚’ç”¨ã„ãŸPOSIXæº–æ‹ ã®AIOãƒ©ã‚¤ãƒ–ãƒ©ãƒªã‚’è©¦ä½œã—ã¦ã¿ã¾ã™ã€‚ ãƒ•ã‚¡ã‚¤ãƒ«I/Oã¨ãƒãƒƒãƒ•ã‚¡ã‚ãƒ£ãƒƒã‚·ãƒ¥ io_submit(2)ã§ã¯Direct I/Oã‚’ç”¨ã„ã¾ã™ãŒã€ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã®è©¦ä½œã¸é€²ã‚€å‰ã«ã¾ãšãƒ•ã‚¡ã‚¤ãƒ«I/Oã®ãƒãƒƒãƒ•ã‚¡ï¼ˆãƒãƒƒãƒ•ã‚¡ã‚ãƒ£ãƒƒã‚·ãƒ¥ï¼‰ã«ã¤ã„ã¦æ•´ç†ã—ã¾ã™ã€‚å®Ÿã¯å˜ã«ãƒãƒƒãƒ•ã‚¡ã¨è¨€ã£ã¦ã—ã¾ã†ã¨èª¤è§£ã•ã‚Œã‚‹å ´é¢ãŒå¤šãã‚ã‚Šã€ä¾‹ãˆã°ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°å…¥é–€ä¸€èˆ¬ã¨ã—ã¦ãƒ•ã‚¡ã‚¤ãƒ«I/Oã‚’å–ã‚Šä¸Šã’ã‚‹éš›ã«ã¯ã€ CPUã®å‹•ä½œã¯é€Ÿã„ã€‚ãƒ‡ã‚£ã‚¹ã‚¯ã®å‹•ä½œã¯é…ã„ã€‚ ä¸¡è€…ã®é–“ã«é€Ÿåº¦å·®ã‚’ç·©å’Œã™ã‚‹ç·©è¡
hirose31 2010/11/23
AIOã ã‘ã˜ã‚ƒãªãã¦ã€å‰åŠã¯åŸºæœ¬ãƒ»ãƒ¢ãƒ€ãƒ³ãªI/Oã«ã¤ã„ã¦è§£èª¬ãŒã‚ã£ã¦å‹‰å¼·ã«ãªã‚‹ã€‚

aio
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akalin.cx / Parallelizing FLAC encoding
One thing I noticed ever since getting a multi-core system was that the reference FLAC encoder is not multi-threaded. This isn't a huge probl em for most people as you can simply encode multiple files at the same time but I usually rip my audio CDs into a single audio file with a cue sheet instead of separate track files and so I am usually encoding a single large audio file instead of multiple sma
hirose31 2008/07/30
aio
ãƒªãƒ³ã‚¯
lab.klab.org - MediaWiki - KLabç¤¾å†…å‹‰å¼·ä¼š
KLab ã§ã¯ä¸€èˆ¬ã®æ–¹ã€…ã«å‚åŠ é ‚ã„ã¦é–‹å‚¬ã—ã¦ã„ã‚‹å‹‰å¼·ä¼šä»¥å¤–ã«ã‚‚ç¤¾å†…ã ã‘ã§è¡Œã£ã¦ã„ã‚‹å‹‰å¼·ä¼šãŒå¹¾ã¤ã‹ã‚ã‚Šã¾ã™ã€‚ ã“ã®ãƒšãƒ¼ã‚¸ã§ã¯ã€ã“ã‚Œã‚‰ã®ä¸ã‹ã‚‰å…¬é–‹å¯èƒ½ãªç¤¾å†…å‹‰å¼·ä¼šã®å†…å®¹ã€è³‡æ–™ã‚’ç´¹ä»‹ã—ã¦ã„ããŸã„ã¨æ€ã„ã¾ã™ã€‚ ç¤¾å†…å‹‰å¼·ä¼š(2008/02/04) antã¨ãƒ†ã‚ã‚¹ãƒˆã‚¨ãƒ‡ã‚£ã‚¿ã§å§‹ã‚ã‚‹Androidã®å†…ã®äººã®ç™ºè¡¨ æ™‚é–“14:30 - 15:00 ç™ºè¡¨è€… ä½ã€…æœ¨ æ¦‚è¦ æœ¬å¹´åº¦åˆã‚ã«DSASãƒ–ãƒã‚°ã«æŽ²è¼‰ã•ã›ã¦ã„ãŸã ã„ãŸã€Androidè¨˜äº‹ã«ã¤ã„ã¦ãƒ—ãƒ¬ã‚¼ ãƒ³ã—ã¾ã™ã€‚ãƒ–ãƒã‚°ã¯MacOS Xã ã£ãŸã®ã§Windowsç‰ˆã‚’ã”ç´¹ä»‹ã§ããŸã‚‰ã¨æ€ã£ã¦ã„ ã¾ã™ã€‚ é–¢é€£è¨˜äº‹Ant ã¨ãƒ†ã‚ã‚¹ãƒˆã‚¨ãƒ‡ã‚£ã‚¿ã§ã¯ã˜ã‚ã‚‹ Android Declarative Class Creation in JavaScript æ™‚é–“15:10 - 15:40 ç™ºè¡¨è€… ä½è—¤ æ¦‚è¦ JavaScriptã¯ã€Webãƒ–ãƒ©ã‚¦ã‚¶ä¸Šã§å‹•ä½œã™ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°
hirose31 2007/08/14
IOå¤šé‡åŒ–ã¨ã‹ AIO (POSIX AIOã¨libaio) ã®ã•ã‚ã‚Šã‚’

self

aio
ãƒªãƒ³ã‚¯
lighty's life - tag aio
hirose31 2007/07/31
lighttpd

aio
ãƒªãƒ³ã‚¯
<aio.h>
hirose31 2007/07/31
aio
ãƒªãƒ³ã‚¯
Lazy Asynchronous I/O For Event-Driven Servers
hirose31 2007/07/31
aio
ãƒªãƒ³ã‚¯
Fibrils and asynchronous system calls [LWN.net]
The kernel's support for asynchronous I/O is incomplete, and it always has been. While certain types of operations (direct filesystem I/O, for example) work well in an asynchronous mode, many others do not. Often implementing asynchronous operation is hard, and nobody has ever gotten around to making it work. In other cases, patches have been around for some time, but they have not made it into th
hirose31 2007/07/26
linux

aio

syslets

threadlets
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cuspy memo - qemu-kvm ã® block migration ã‚’è©¦ã—ã¦ã¿ãŸã‚ˆã€‚
Welcome to cuspy.org. Here is my personal site.
hirose31 2007/07/26
>kernel 2.6.24 ã‚ãŸã‚Šã§å…¥ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ Syslets ã¨ threadlets

linux

aio

syslets

threadlets
ãƒªãƒ³ã‚¯
libevent - an asynchronous event library
hirose31 2007/07/23
>detect kqueue bug in Mac OS X 10.4

mac

kqueue

aio
ãƒªãƒ³ã‚¯
mixi(ãƒŸã‚¯ã‚·ã‚£)
mixi(ãƒŸã‚¯ã‚·ã‚£)ã¯ã€å‹äººãƒ»çŸ¥äººã¨ã®ã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ã•ã‚‰ã«ä¾¿åˆ©ã«æ¥½ã—ãã™ã‚‹SNSã¨ã„ã†ã‚µãƒ¼ãƒ“ã‚¹ã§ã™ã€‚
hirose31 2007/07/23
tmpfs+sendfile()ãŒæœ¬å½“ã«é€Ÿã„ä»¶ï¼æ·±è¿½ã„ï½—ï½‹ï½”ï½‹

linux

aio
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On-line Manual of "aio_waitcomplete"
hirose31 2007/07/18
>aio_waitcomplete() ã‚·ã‚¹ãƒ†ãƒ ã‚³ãƒ¼ãƒ«ã¯ FreeBSD ç‰¹æœ‰ã®æ‹¡å¼µã§ã™ã€‚

aio

freebsd
ãƒªãƒ³ã‚¯
<signal.h>
hirose31 2007/07/18
sigevent sigev_notify_function sigev_notify_attributes

aio

posix
ãƒªãƒ³ã‚¯
http://docs.sun.com/app/docs/doc/819-2242/6n4hvaoam?l=ja&a=view
hirose31 2007/07/18
sigev_notify_function sigev_notify_attributes

aio

solaris
ãƒªãƒ³ã‚¯
On-line Manual of "kqueue"
hirose31 2007/07/18
kqueue

aio

freebsd
ãƒªãƒ³ã‚¯
Re: aio_read() oddness
hirose31 2007/07/18
aio

freebsd
ãƒªãƒ³ã‚¯
Greg K-Hã€ãƒ‡ãƒã‚¤ã‚¹ãƒ‰ãƒ©ã‚¤ãƒç„¡æ–™é–‹ç™ºå®£è¨€ï¼ï¼Ÿ ï¼ˆ1/2ï¼‰ ï¼ ï¼ IT
3æœˆç‰ˆã€€Greg K-Hã€ãƒ‡ãƒã‚¤ã‚¹ãƒ‰ãƒ©ã‚¤ãƒç„¡æ–™é–‹ç™ºå®£è¨€ï¼ï¼Ÿ ä¸Šå·ç´”ä¸€ æ—¥æœ¬ãƒ’ãƒ¥ãƒ¼ãƒ¬ãƒƒãƒˆãƒ»ãƒ‘ãƒƒã‚«ãƒ¼ãƒ‰æ ªå¼ä¼šç¤¾ ã‚³ãƒ³ã‚µãƒ«ãƒ†ã‚£ãƒ³ã‚°ãƒ»ã‚¤ãƒ³ãƒ†ã‚°ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³çµ±æ‹¬æœ¬éƒ¨ 2007/3/27 linux-kernelãƒ¡ãƒ¼ãƒªãƒ³ã‚°ãƒªã‚¹ãƒˆï¼ˆä»¥ä¸‹LKMLï¼‰ã‹ã„ã‚ã„ã§èµ·ãã‚‹ã‚¤ãƒ™ãƒ³ãƒˆã‚’æ¯ŽæœˆãŠä¼ãˆã™ã‚‹ã€Linux Kernel Watchã€‚2007å¹´2æœˆã¯ã©ã®ã‚ˆã†ãªã“ã¨ãŒèµ·ããŸã®ã‹ã€è¦‹ã¦ã¿ã¾ã—ã‚‡ã†ã€‚ ãƒŽãƒ¼ãƒˆPCã‚„çµ„ã¿è¾¼ã¿æ©Ÿå™¨ã«æœ‰åŠ¹ãªæ–°æ©Ÿèƒ½ã¨ã¯ï¼Ÿ 2æœˆ4æ—¥ã«Linuxã‚«ãƒ¼ãƒãƒ«2.6.20ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸã€‚KVMï¼ˆKernel-based Virtual Machineï¼‰ãƒžãƒ¼ã‚¸å¾Œã®åˆã®å…¬å¼ãƒªãƒªãƒ¼ã‚¹ã§ã™ã€‚KVMã¯ã€ãã®å¾Œã®-rcãƒªãƒªãƒ¼ã‚¹ã§ABIï¼ˆApplication Binary Interfaceï¼‰å¤‰æ›´ã‚’ä½•åº¦ã‹ã—ã¦ã„ã‚‹ã®ã§ã€ç¾çŠ¶ã§ã¯ã¾ã åˆ©ç”¨è€…æ³£ã‹ã›ã®çŠ¶æ…‹ã¨ã„ãˆã¾ã™ã€‚ã„ã¾ã¯æœ€æ–°ç‰ˆãŒå‹•ãçµ„ã¿åˆã‚ã›ã‚’è¿½è·¡ã™ã‚‹ã ã‘ã§ã‚‚å¤§å¤‰ãªã®
hirose31 2007/07/15
>Zach Brownã¯ã€Linuxã‚«ãƒ¼ãƒãƒ«ã®AIOï¼ˆéžåŒæœŸI/Oï¼‰ã®å®Ÿè£…ã®ãŸã‚ã«ã€Œfibrilã€ã¨ã„ã†ãƒ©ã‚¤ãƒˆã‚¦ã‚§ã‚¤ãƒˆã®ã‚«ãƒ¼ãƒãƒ«ã‚¹ãƒ¬ãƒƒãƒ‰ã®ä»•çµ„ã¿ã‚’ææ¡ˆã—ã¾ã—ãŸã€‚ãã‚Œã«è§¦ç™ºã•ã‚ŒãŸIngo Molnarã¯ã€ŒSysletsã€ã‚’å®Ÿè£…ã—ã¾ã—ãŸã€‚

aio
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mixi(ãƒŸã‚¯ã‚·ã‚£)
mixi(ãƒŸã‚¯ã‚·ã‚£)ã¯ã€å‹äººãƒ»çŸ¥äººã¨ã®ã‚³ãƒŸãƒ¥ãƒ‹ã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’ã•ã‚‰ã«ä¾¿åˆ©ã«æ¥½ã—ãã™ã‚‹SNSã¨ã„ã†ã‚µãƒ¼ãƒ“ã‚¹ã§ã™ã€‚
hirose31 2007/07/15
aio
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æ—¥æœ¬IBM
watsonx.governanceã®æä¾›ã‚’é–‹å§‹ è²¬ä»»ã‚ã‚‹ã€é€æ˜Žã§èª¬æ˜Žå¯èƒ½ãªAIã®ãƒ¯ãƒ¼ã‚¯ãƒ•ãƒãƒ¼ã‚’å®Ÿç¾ã™ã‚‹ç”ŸæˆAIã®ãŸã‚ã®ã‚¬ãƒãƒŠãƒ³ã‚¹ãƒ»ãƒ„ãƒ¼ãƒ« è£½å“ã®è©³ç´° ç„¡æ–™è©•ä¾¡ç‰ˆã‚’è©¦ã™ ã“ã®ãŸã³ã®ä»¤å’Œ6å¹´èƒ½ç™»åŠå³¶åœ°éœ‡ã§è¢«ç½ã•ã‚ŒãŸçš†æ§˜ã«è¬¹ã‚“ã§ãŠè¦‹èˆžã„ç”³ã—ä¸Šã’ã¾ã™ã€‚ ä»¤å’Œ6å¹´1æœˆ1æ—¥ã«ç™ºç”Ÿã—ãŸèƒ½ç™»åŠå³¶åœ°éœ‡ã«ã‚ˆã‚Šè¢«ç½ã•ã‚ŒãŸãŠå®¢æ§˜å‘ã‘ã®ä¿å®ˆã‚µãƒ¼ãƒ“ã‚¹ç‰¹åˆ¥å¯¾å¿œ ã‚·ã‚¹ãƒ†ãƒ é–‹ç™ºã‚„é‹ç”¨ã«ç”ŸæˆAIã‚’æ´»ç”¨ã™ã‚‹ã€ŒITå¤‰é©ã®ãŸã‚ã®AIã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã€ã«ã‚ˆã‚Šã€ç”Ÿç”£æ€§ã¨å“è³ªã®å‘ä¸Šã‚’å®Ÿç¾
hirose31 2007/07/13
ãƒãƒ¥ãƒ¼ãƒˆãƒªã‚¢ãƒ«

aio
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