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mrkn id:mrkn

mallocã«é–¢ã™ã‚‹mrknã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (9)

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mrkn 2019/04/09
malloc
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malloc() ãŒè¿”ã™ã‚¢ãƒ‰ãƒ¬ã‚¹ã®ä¸‹ä½æ•°ãƒ“ãƒƒãƒˆã¯å¸¸ã«ï¼ã£ã¦çŸ¥ã£ã¦ã¾ã™ï¼Ÿ
æœ¬å½“ã¯ã€Œmalloc() ãŒè¿”ã™ã‚¢ãƒ‰ãƒ¬ã‚¹ã¯ï¼˜ã®å€æ•°ã£ã¦çŸ¥ã£ã¦ã¾ã™ï¼Ÿã€ ã«ã—ãŸã‹ã£ãŸã‚“ã ã‘ã©ï¼Œã€Œï¼˜ã€ã¨ã„ã†ã®ã¯ CPU ä¾å˜ã®æ•°å—ã ã—ï¼Œ ä¸€èˆ¬ã«ã¯ï¼’ã®å†ªä¹—ãªã®ã§ã“ã†ã„ã†ã‚¿ã‚¤ãƒˆãƒ«ã«ã—ãŸï¼Ž ãã‚‚ãã‚‚ã“ã®è¨˜äº‹ã‚’æ›¸ããã£ã‹ã‘ã¯ï¼Œ YLUG ã® ã€Œç¬¬67å›žã‚«ãƒ¼ãƒãƒ«èªæ›¸ä¼š (glibc malloc ã«ã¤ã„ã¦)ã€ã® ãƒ“ãƒ‡ã‚ªã¨è³‡æ–™ã‚’è¦‹ãŸã“ã¨ï¼Ž 1985å¹´é ƒã« Lisp ã®å‡¦ç†ç³»ã‚’ä½œã‚ã†ã¨ã—ã¦ (çµå±€ä½œã‚‰ãªã‹ã£ãŸã‘ã©(^^;)) ãƒ¡ãƒ¢ãƒªç®¡ç†æ–¹æ³•ã«ã¤ã„ã¦è‰²ã€…è€ƒãˆãŸã‚¢ã‚¤ãƒ‡ã‚£ã‚¢ã¨åŒã˜ã‚‚ã®ã‚‚ã„ãã¤ã‹å‡ºã¦ãã¦ï¼Œ æ‡ã‹ã—ãã‚‚ã‚ã‚Šï¼Œã¾ãŸã¨ã¦ã‚‚é¢ç™½ã‹ã£ãŸãŒï¼Œ ç§ã«ã¨ã£ã¦ç›®æ–°ã—ã„ã‚¢ã‚¤ãƒ‡ã‚£ã‚¢ã¯å°‘ãªã‹ã£ãŸï¼Ž malloc() ã®å†…éƒ¨å®Ÿè£…ã«èˆˆå‘³ã‚’æŒã¤äººã§ã‚ã£ã¦ã‚‚ï¼Œ æ„å¤–ã¨ä¸Šè¨˜ã‚¿ã‚¤ãƒˆãƒ«ã«æ›¸ã„ãŸäº‹å®Ÿã‚’çŸ¥ã‚‰ãªã„äººãŒå¤šã„ã‚ˆã†ãªã®ã§ï¼Œ ã€Œãƒ“ãƒ‡ã‚ªã¨è³‡æ–™ã€ã®ãƒšãƒ¼ã‚¸ã«è‰²ã€…ã¨ã‚³ãƒ¡ãƒ³ãƒˆã—ãŸï¼Ž ã“ã®è¨˜äº‹ã¯ãã‚Œã‚’æ•´ç†ã—ã¦ã¾ã¨ã‚ãŸã‚‚ã®ã§ã‚ã‚‹ï¼Ž 2016/0
mrkn 2016/05/05
malloc
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malloc ã‚¢ãƒ©ã‚¤ãƒ¡ãƒ³ãƒˆ
mrkn 2016/05/05
malloc

msdn
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Scalable memory allocation using jemallocã®å‚™å¿˜éŒ²çš„å’Œè¨³ - ã¯ã¦ãªã‹ã‚ˆã£ï¼
Scala ble memory allocation using jemalloc jemallocã¯ä»Šä½¿ã£ãŸã‚Šã—ã¦ã‚‹ã—ï¼Œä»Šå¾Œã‚½ãƒ¼ã‚¹èªã‚€å¯èƒ½æ€§ã‚‚ã‚ã‚‹ã®ã§ï¼Œé©å½“ã«(ç²¾åº¦ã¨ã‹ã¯æœŸå¾…ã—ãªã„ã‚ˆã†ã«ï¼)ï¼Žæ°—ã«ãªã‚‹äººã¯å…ƒè¨˜äº‹ã‚’èªã¿ã¾ã—ã‚‡ã†ï¼Ž Scala ble memory allocation using jemalloc Facebookã¯ï¼Œ8ã‚³ã‚¢+CPUã¨8GiB RAMãªå°‚ç”¨ãƒžã‚·ãƒ³ã®ä¸Šã§èµ°ã£ã¦ã„ã‚‹ï¼Œæ§˜ã€…ãªç¨®é¡žã®ã‚µãƒ¼ãƒã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®é›†åˆã§æ§‹æˆã•ã‚Œã¦ã„ã¾ã™ï¼Žã“ã‚Œã‚‰ã®ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¯ï¼ŒCPUã¨RAMã¨æœ€å¤§é™ä½¿ã†äº‹ã«ã‚ˆã£ã¦æœ€é«˜ã®ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆã‚’ç›®æ¨™ã«ï¼Œä¸¦è¡Œå‡¦ç†ã®ãŸã‚å¤§ä½“POSIXã‚¹ãƒ¬ãƒƒãƒ‰ã‚’ä½¿ã£ã¦ã„ã¾ã™ï¼Žã“ã®ç’°å¢ƒã¯ï¼Œãƒ¡ãƒ¢ãƒªã‚¢ãƒã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®ãŸã‚ã®é‡å¤§ãªãƒãƒ£ãƒ¬ãƒ³ã‚¸ã‚’ã‚‚ãŸã‚‰ã—ã¾ã™ï¼Žå…·ä½“çš„ã«è¨€ãˆã°ï¼Œ ç¢ºä¿ã¨è§£æ”¾ã¯é€Ÿããªã‘ã‚Œã°ã„ã‘ã¾ã›ã‚“ï¼Žç†æƒ³çš„ã«ï¼Œãƒ¡ãƒ¢ãƒªã‚¢ãƒã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®å®šå¸¸çŠ¶æ…‹ã«ãŠã„ã¦ã¯ã»ã¨ã‚“
mrkn 2012/06/01
malloc

jemalloc

algorithm
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XXmallocã®ãƒ¡ãƒ¢ãƒªç®¡ç†ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã«ã¤ã„ã¦ã‚ã‹ã‚Šã‚„ã™ã„è¨˜äº‹ - Qiita
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mrkn 2012/06/01
programming

malloc

algorithm
ãƒªãƒ³ã‚¯
Lockless Inc. Low level software to optimize performance
Optimize your Software It is a simple step to speed up your software. No source code changes are required. Lockless MPI seemlessly replaces your system MPI implementation, and you reap the performance benefits. Lockless MPI Released Version 1.2 of the Lockless MPI has just been released. It is optimized for modern 64bit multicore systems, and supports programs running on Linux. There are bindings
mrkn 2012/01/07
malloc
ãƒªãƒ³ã‚¯
ned Productions - nedmalloc
If you want an explanation of the difference between the Packetised and Memory Mapped benchmarks, please see the Tn homepage (but basically, the Packetised involves performing a lot more memory ops in a more loaded multithreaded environment). As you can see above, the benefits of nedmalloc translate into real world code with more than a 50% speed increase over the default win32 allocator. The Tn s
mrkn 2011/03/30
è¶…é€Ÿã„ malloc ã‹ã€‚

programming

memory_management

malloc

nedmalloc

ptmalloc2

tcmalloc

thread_caching

algorithm
ãƒªãƒ³ã‚¯
TCMalloc : Thread-Caching Malloc
Sanjay Ghemawat Motivation TCMalloc is faster than the glibc 2.3 malloc (available as a separate library called ptmalloc2) and other mallocs that I have tested. ptmalloc2 takes approximately 300 nanoseconds to execute a malloc/free pair on a 2.8 GHz P4 (for small objects). The TCMalloc implementation takes approximately 50 nanoseconds for the same operation pair. Speed is important for a malloc im
mrkn 2011/03/30
google

malloc

memory_management

performance

programming

tcmalloc

thread_caching
ãƒªãƒ³ã‚¯
å‚ç…§é€æ˜Žãª malloc ã¯å¯èƒ½ã‹ (ã‚ã‚‹ã„ã¯ IO ãƒ¢ãƒŠãƒ‰ã«ã¤ã„ã¦) @ val it: Î± â†’ Î± = fun
This entry was posted by Jun Mukai on Friday, 6 November, 2009 alohakun ãŒæ¬¡ã®ã‚ˆã†ãªã“ã¨ã‚’æ›¸ã„ã¦ã„ãŸã®ãŒé¢ç™½ã‹ã£ãŸã®ã§ã€ä»Šæ—¥ã¡ã‚‡ã£ã¨å¸°å®…é€”ä¸ã«ã¤ã‚‰ã¤ã‚‰è€ƒãˆãŸã‚“ã ã‘ã©ã€twitterã§ã¤ã¶ã‚„ãã«ã¯é•·ã™ãŽã‚‹ã®ã§ã¡ã‚‡ã£ã¨æ›¸ã„ã¦ã¿ã‚‹ã“ã¨ã«ã—ã¾ã™ã€‚ malloc() ã£ã¦å‰¯ä½œç”¨ã‚ã‚‹ã® ? ã‚‚ã¡ã‚ã‚“å†…éƒ¨çš„ã«ã¯ã‚ã‚‹ã ã‚ã†ã‘ã©ã€å¤–éƒ¨çš„ãªæŒ¯ã‚‹èˆžã„ã ã‘ã‚’è¦‹ã‚‹ã¨ã€æœ‰åŠ¹ãªãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¸ãƒ§ãƒ³ã®å…ˆé ã‚¢ãƒ‰ãƒ¬ã‚¹ãŒè¿”ã£ã¦ãã‚‹ã ã‘ã ã‹ã‚‰ã€è¦³æ¸¬ã§ããªã„ã¨æ€ã†ã‚“ã ã‘ã©ã€‚ (http://twitter.com/alohakun/status/5433639881) Haskell ã§ä¹±æ•°ä½œã‚‹ã¨ãã£ã¦ã©ã†ã‚„ã£ã¦å‚ç…§é€æ˜Žã«ã—ã¦ã‚‹ã‚“ã ? ä¹±æ•°ã‚’ç›´æŽ¥ä½œã‚‹é–¢æ•°ã¯ç„¡ãã¦ã€ã‚·ãƒ¼ãƒ‰ã‚’å…ƒã«ã€ä¹±æ•°ã®ç„¡é™ãƒªã‚¹ãƒˆã‚’ä½œã‚‹ã¨ã‹ãªã®ã‹ãªã€‚ãªã‚‰ã°ã€ç¢ºä¿å¯èƒ½ã‚¢ãƒ‰ãƒ¬ã‚¹ã®ç„¡é™ãƒªã‚¹ãƒˆã‚’ä½œã‚Œã°ã€å‰¯ä½œ
mrkn 2009/11/06
haskell

monado

malloc
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1