[B! optimization] gfxã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

gfx id:gfx

optimizationã«é–¢ã™ã‚‹gfxã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (12)

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

${{author_name}}$
{{author_name}}{{created}}
{{ #comment }}{{ comment }}{{ /comment }}
- {{ label }}

${{author_name}}$

{{{comment_expanded}}}

{{label}}

{{#is_bookmark}}ãƒªã‚¹ãƒˆ{{/is_bookmark}}{{^is_bookmark}}ãƒªãƒ³ã‚¯{{/is_bookmark}}

ã‚³ã‚¸ã‚ªãƒ‹ãƒ«ã‚¯
ã“ã“ã¯ Web ã‚„ Android ã‚¢ãƒ—ãƒªã®ãƒ—ãƒã‚°ãƒ©ãƒžã§ã‚ã‚Šãƒã‚§ã‚¹ã‚„ãƒã‚¤ã‚¯ã€æ ªå¼æŠ•è³‡ã‚’è¶£å‘³ã¨ã™ã‚‹ã‚³ã‚¸ã‚ªãƒ³ã“ã¨ Hideyuki Kojima ã®æ—¥è¨˜ã§ã™ã€‚ æ¯Žæ—¥ä½•ã‹ã—ã‚‰æ¬ ã‹ã•ãšæ›¸ã„ã¦ã„ã¾ã™ã€‚ ã“ã® Blog ã®ä»–ã« Qiita ã«ã‚‚ã„ãã¤ã‹æŠ€è¡“ç³»ã®è¨˜äº‹ã‚’æŠ•ç¨¿ã—ã¦ã„ã¾ã™ã€‚ YouTube ã®ãƒã‚§ã‚¹å®Ÿæ³ãƒãƒ£ãƒ³ãƒãƒ« ã«æ¯Žæ—¥ lichess ã‹ Chess.com ã® 10 åˆ†ãƒ¬ãƒ¼ãƒˆæˆ¦ã®å®Ÿæ³å‹•ç”»ã‚’æŠ•ç¨¿ã—ã¦ã„ã¾ã™ã€‚ é€£çµ¡ã¯ãƒ¡ãƒ¼ãƒ«ã§ãŠé¡˜ã„ã—ã¾ã™ã€‚kojionilk ã‚ã£ã¨ã¾ãƒ¼ã gmail ã©ã£ã¨ com ã§ã™ã€‚
gfx 2013/05/29
optimization
ãƒªãƒ³ã‚¯
æ•°ç‹¬ã®é«˜é€ŸåŒ– - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã€Œã‚µã‚¤ãƒœã‚¦ã‚ºãƒ»ã‚¢ãƒ‰ãƒ™ãƒ³ãƒˆã‚«ãƒ¬ãƒ³ãƒ€ãƒ¼ã€ã®4æ—¥ç›®ã§ã™ï¼ˆã“ã‚Œã¾ã§ã®è¨˜äº‹ä¸€è¦§ï¼‰ã€‚ã©ã†ã‚„ã‚‰ä¸‰æ—¥åŠä¸»ã¯å…ã‚ŒãŸã‚ˆã†ã§ã™ï¼ˆç¬‘ï¼‰ã€‚ (0) ã¯ã˜ã‚ã« ã“ã‚“ã«ã¡ã¯ã€‚ã‚µã‚¤ãƒœã‚¦ã‚ºãƒ»ãƒ©ãƒœã®å·åˆç§€å®Ÿã§ã™ã€‚ç§ã¯ä¸»ã«ã‚µã‚¤ãƒœã‚¦ã‚ºè£½å“ã®é«˜é€ŸåŒ–ã®ãŠæ‰‹ä¼ã„ã‚’ã—ã¦ã„ã¾ã™ã€‚ã—ã‹ã—å…ˆæ—¥ã€è£½å“ã¨ã¯é–¢ä¿‚ãªã„ã‚‚ã®ã‚’é«˜é€ŸåŒ–ã—ãŸã®ã§ã€ä»Šæ—¥ã¯ãã‚Œã‚’ç™ºè¡¨ã—ã¾ã™ã€‚ ã‚µã‚¤ãƒœã‚¦ã‚ºã«ã¯ç¤¾å†…å‹‰å¼·ä¼šãŒã„ãã¤ã‹ã‚ã£ã¦ã€ãã®ä¸ã«ã¯C++ã®å‹‰å¼·ä¼šã‚‚ã‚ã‚Šã¾ã™ã€‚ç§ã¯ã‚µã‚¤ãƒœã‚¦ã‚ºã®å‹‰å¼·ä¼šã«å‚åŠ ã™ã‚‹ã®ãŒå¥½ããªã®ã§ã€ã“ã®C++ã®å‹‰å¼·ä¼šã«å‚åŠ ã—ã¦ã¿ã¾ã—ãŸã€‚ã“ã®å‹‰å¼·ä¼šã§ã¯ã€ã€Œæ•°ç‹¬ã€ã¨ã„ã†ãƒ‘ã‚ºãƒ«ã‚’è§£ããƒ—ãƒã‚°ãƒ©ãƒ ã‚’C++ã§æ›¸ã„ã¦ã¿ã‚ˆã†ã€ã¨ã„ã†ã®ãŒæœ€åˆã®ãƒ†ãƒ¼ãƒžã§ã—ãŸã€‚å‚åŠ è€…å„è‡ªãŒãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ãã€ç¿Œé€±ã«ãŠäº’ã„ã«ãƒ¬ãƒ“ãƒ¥ãƒ¼ã—ã‚ã†ã¨ã„ã†ã“ã¨ãŒè¡Œã‚ã‚Œã¾ã—ãŸã€‚ ã“ã“ã§ç§ã¯ã‚„ã‚‰ã‹ã—ã¦ã—ã¾ã„ã¾ã—ãŸã€‚ãˆãˆã€ãã†ã§ã™ã€é«˜é€ŸåŒ–ã—ã¦ã—ã¾ã£ãŸã®ã§ã™ï¼ è¨€ã†ã¾ã§ã‚‚ãªã„ã§ã™ãŒã€èª°ã‚‚ã“ã‚“ãªã“ã¨ã¯æœ›ã‚“ã§ã„ã¾ã›ã‚“ã€‚ãã‚‚ã
gfx 2012/12/06
C++

optimization
ãƒªãƒ³ã‚¯
Happy Optimization
Recent Advances in HTTP, controlling them using ruby
gfx 2012/09/18
optimization
ãƒªãƒ³ã‚¯
Javascript memory optimization and texture loading
Over the past couple of weeks I've seen a few great resources about optimizing your javascript. One is a wonderful GCD presentation by Lilli Thompson about best practices when writing code for V8 (Chrome's Javascript engine.)Â Although the presentation uses Chrome for it's concrete examples, much of the information is very practical for any browser. GDC 2012: From Console to Chrome It's a long pres
gfx 2012/05/01
JavaScript

optimization
ãƒªãƒ³ã‚¯
__builtin_expectã®åŠ¹åŠ› - åˆå¦è€…ã®ç®¸ç½®
RLogã‚’ã„ã˜ã£ã¦ã¦çŸ¥ã£ãŸ__builtin_expectã‚’è©¦ã—ã¦ã¿ãŸã€‚__builtin_expectã¯ã‚ã‚‹å¼ãŒã»ã¨ã‚“ã©ã®å ´åˆã«æ±ºã¾ã£ãŸå®šæ•°ã«ãªã‚‹ã€ã¨è¨€ã†å ´åˆã«åˆ†å²äºˆæ¸¬ã®ãƒ’ãƒ³ãƒˆãªã©ã‚’ä¸Žãˆã¦é«˜é€ŸåŒ–ã‚’è¨ˆã‚‹ãŸã‚ã®gccãƒ‡ã‚£ãƒ¬ã‚¯ãƒ†ã‚£ãƒ–ã ãã†ãªã€‚ RLogã¯dormant(ä¼‘çœ )çŠ¶æ…‹ã®ãƒã‚°ãƒ•ã‚¡ã‚·ãƒªãƒ†ã‚£ã«æœ€é©åŒ–ã—ã¦ã‚ã£ã¦ã€ãƒ—ãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³ã‚³ãƒ¼ãƒ‰ã«ãƒã‚°ã‚³ãƒ¼ãƒ‰ã‚’æ®‹ã—ã£ã±ãªã—ã§ã‚‚ã•ã»ã©ãƒ‡ã‚°ãƒ¬ã—ãªã„ã®ãŒå£²ã‚Šãªã‚“ã ã‘ã©ã€ãã®ã‚«ãƒ©ã‚¯ãƒªãŒã“ã‚Œã€‚ ã§ã€RLogè‡ªèº«ã«ã¤ã„ã¦ã¯ã‚ã¨ã§æ›¸ãã€‚ ã©ã†ã‹ãï¼Ÿ å…·ä½“çš„ã«ã¯ __builtin_expect(A,B)ã¨æ›¸ã„ãŸå ´åˆ AãŒå®šæ•° Bã§ã‚ã‚‹äº‹ã‚’æœŸå¾…ã™ã‚‹ã€ã¨ã„ã†ãƒ’ãƒ³ãƒˆæƒ…å ±ã«ãªã‚‹ã€‚ ä¾‹ãˆã°ã€æ¯”è¼ƒæ¼”ç®—åãŒã»ã¨ã‚“ã©ã®å ´åˆæˆã‚Šç«‹ãŸãªã„ã€ã¨è¨€ã†å ´åˆ __builtin_expect(, 0)ã€€ã¨ãªã‚‹ã€‚ #include <stdio.h> #ifdef EXPECT #define E
gfx 2012/02/05
cpu

optimization
ãƒªãƒ³ã‚¯
value representation in javascript implementations â€” wingolog
In my last note I mentioned that I had been doing a lot of reading of JavaScript implementation code. One point that I didn't mention is that the state of the art is completely undocumented. So to work on rectifying that, here's the first in what might be a series of articles about the internals of JavaScript implementations. tagging Initially, all JavaScript implementations used tagged pointers t
gfx 2011/09/11
optimization

double
ãƒªãƒ³ã‚¯
NaN boxing - æž•ã‚’æ¬¹ã¦ã¦è´ã
æ›¸ã„ã¦ãŠã‹ãªã„ã¨å°†æ¥è‡ªåˆ†ãŒæ„å‘³ä¸æ˜Žã«ãªã‚‹ã®ã§, NaN boxingã«ã¤ã„ã¦. LuaJITãŒå¤ãã‹ã‚‰(wingo logã•ã‚“ã®ç´ æ™´ã‚‰ã—ã„è¨˜äº‹ã«ã‚ˆã‚‹ã¨), JSCãŒå‰ã‹ã‚‰, SpiderMonkeyã¯fatvalsã§, NaN boxingã™ã‚‹ã“ã¨ã«ã‚ˆã‚ŠJSValã‚’64bitã«åŽã‚ã‚‹ã“ã¨ã‚’è¡Œã£ã¦ã„ã¾ã™. iv / lv5ã¯ä»¥å‰ã‹ã‚‰32bit Systemã«ãŠã‘ã‚‹NaN boxingã¯å®Ÿè£…ã—ã¦ã„ã¾ã—ãŸãŒ, 64bit Systemã«ãŠã‘ã‚‹NaN boxingã¯è¡Œã£ã¦ã„ã¾ã›ã‚“ã§ã—ãŸ. ã—ã‹ã—å…ˆã»ã©, 64bit NaN boxing in 64bit SystemãŒå…¥ã‚Š, ç¾åœ¨, Solarisä»¥å¤–ã®OSã«ãŠã„ã¦ã¯sizeof(JSVal)ãŒå¸¸ã«64bitã«ãªã‚Šã¾ã—ãŸ. ã¨ã„ã†ã‚ã‘ã§NaN boxing memo. 32bit / 64bitã¨ã‚‚ã«. value representation i
gfx 2011/09/11
optimization

double
ãƒªãƒ³ã‚¯
Issue #4753: Faster opcode dispatch on gcc - moriyoshiã®æ—¥è¨˜
è¿½è¨˜: typoä¿®æ£ã€‚ãƒ†ã‚¹ãƒˆã‚³ãƒ¼ãƒ‰ã«ä½™è¨ˆãªã€Œrã€ãŒå«ã¾ã‚Œã¦ãŸã®ã¨ã€ã€ŒPICã‚³ãƒ¼ãƒ‰ã€ã¨ã‹é–“æŠœã‘ãªã“ã¨æ›¸ã„ã¦ãŸã®ã‚’ã€‚ Issue #4753 è·å ´ã§ã‚‚è©±é¡Œã«ãªã£ãŸã®ã§ã€‚ ã“ã®ãƒ‘ãƒƒãƒã®ã‚³ãƒ¡ãƒ³ãƒˆã«ã‚ˆã‚‹ã¨ã€threaded codeã«ã—ãŸã»ã†ãŒåˆ†å²äºˆæ¸¬ãŒåŠ¹æžœçš„ã«åƒãã€15%-20%ã»ã©é€Ÿããªã‚‹ã¨ã®ã“ã¨ã€‚computed gotoè‡ªä½“ã¯ã€threadedã«ã™ã‚‹éƒ½åˆã«ã‚ˆã‚‹ã‚‚ã®ãªã®ã§ã€å®Ÿã¯ã‚ã¾ã‚Šæœ¬è³ªçš„ã§ã¯ãªã„ã€‚ è¦ã¯ã€åˆ†å²äºˆæ¸¬ã¯åˆ†å²å‘½ä»¤ã”ã¨ã«ã€ç‰¹å®šã®å‘¼ã³å‡ºã—ãƒ‘ã‚¿ãƒ¼ãƒ³ã‚’æ¤œå‡ºã™ã‚‹ã“ã¨ã§è¡Œã‚ã‚Œã‚‹ã‚‚ã®ãªã®ã§ã€ãƒ‡ã‚£ã‚¹ãƒ‘ãƒƒãƒã™ã‚‹ç®‡æ‰€ãŒ1ã‚«æ‰€ã«ãªã£ã¦ã„ã‚‹ã‚ˆã‚Šã¯è¤‡æ•°ç®‡æ‰€ã«ãªã£ã¦ã„ã‚‹æ–¹ãŒæœ‰åŠ¹ã«åˆ©ç”¨ã§ãã‚‹ã¨ã„ã†ã“ã¨ã‚‰ã—ã„ã€‚ ã¤ã¾ã‚Šã€ int *op = opcodes; for (;;) { static void *table = { &&OP_ADD, &&OP_LOAD, ... }; goto table[*op];
gfx 2010/11/04
computed goto (direct threaded code)

optimization

gcc
ãƒªãƒ³ã‚¯
ã‚¤ãƒ³ãƒ†ãƒ«ãƒ»AMDã®CPUã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒˆãŒæ˜Žã‹ã™ï¼š GNU grep ãŒé€Ÿã„ç†ç”± - karasuyamatenguã®æ—¥è¨˜
GNU grepã®å…ƒç¥–ä½œè€…ãŒFreeBSDãƒãƒƒã‚«ãƒ¼ã‚’schoolã—ã¦ã„ã‚‹ã€‚ http://lists.freebsd.org/pipermail/freebsd-current/2010-August/019310.html FreeBSDå¯¾GNU grepã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚’è°è«–ã—ã¦ã„ã‚‹ã¨æ€ã‚ã‚Œã‚‹ã¨ã“ã¨ã«ã€Œä¿ºã¯grepã®åˆä»£ä½œè€…ã ã€ã¨åä¹—ã£ã¦ç¾ã‚ã‚ŒãŸç”·ãŒã„ã‚‹ã€‚ å±¥æ´æ›¸(http://duckytech.com/resume.pdf)ã‚’è¦‹ã‚‹ã¨ã€GNU coreutilsã«è²¢çŒ®ã—ãŸå¾Œã€ã‚¤ãƒ³ãƒ†ãƒ«ã‚„AMDã§CPUã‚¢ãƒ¼ã‚ãƒ†ã‚¯ãƒˆã‚’å‹¤ã‚ã¦ã„ã‚‹ç”·ã ã€‚ã“ã‚Œã¯è©±ã‚’èžã„ãŸæ–¹ãŒã‚ˆã•ãã†ã ã€‚ FreeBSDãƒ¦ãƒ¼ã‚¶ã§ã‚‚ã‚ã‚‹å½¼ã¯ãƒªã‚¹ãƒˆã‚’è¦³é–²ã—ã¦ã„ãŸã‚‰ãŸã¾ãŸã¾GNUå¯¾BSDã®grepè«–äº‰ã«å½“ã£ã¦ã—ã¾ã£ãŸã‚ˆã†ã ã€‚BSDã®ãƒªã‚¹ãƒˆã«GNU grepã®ç§˜å¯†ã‚’è§£ãã€‚ æŠ€1ï¼š å…¨ã¦ã®å…¥åŠ›ãƒã‚¤ãƒˆã‚’è¦‹ãªã„ã‹ã‚‰é€Ÿã„ æŠ€2ï¼š è¦‹ã‚‹ãƒã‚¤ãƒˆã«é–¢
gfx 2010/08/25
grep

optimization
ãƒªãƒ³ã‚¯
ã‚¤ãƒ³ã‚¿ãƒ—ãƒªã‚¿åž‹è¨€èªžã‚’é«˜é€ŸåŒ–ã™ã‚‹ computed goto : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
å…ˆæ—¥Python 3.1a1 ãŒãƒªãƒªãƒ¼ã‚¹ã•ã‚Œã¾ã—ãŸã€‚ Python 3.0 ã¯ Python 2.6 ã«æ¯”ã¹ã¦ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒæ‚ªã‹ã£ãŸã®ã§ã™ãŒã€Python3.1ã¯Python2.6ã‚ˆã‚Šã‚‚é€Ÿããªã‚‹ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚ Python3.1ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å‘ä¸Šã¯ã€ä¸»ã«æ¬¡ã®2ç‚¹ãŒå½±éŸ¿ã—ã¦ã„ã¾ã™ã€‚ ioãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ãŒCè¨€èªžã§æ›¸ãç›´ã•ã‚ŒãŸ computed goto ã®æŽ¡ç”¨ (--with-computed-gotos ã¨ã„ã†configureã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§æœ‰åŠ¹) computed goto ã¨ã„ã†åå‰ã‚’èžãæ…£ã‚Œãªã‹ã£ãŸã®ã§ã™ãŒã€èª¿ã¹ã¦ã¿ã‚‹ã¨ Ruby 1.9 ã® VM (YARV) ã‚„ã€ Perl6 ã® VM ã¨ã—ã¦é–‹ç™ºã•ã‚Œã¨ã†ã¨ã†ãƒªãƒªãƒ¼ã‚¹ã•ã‚ŒãŸ Parrot ã«ã‚‚æŽ¡ç”¨ã•ã‚Œã¦ã„ã‚‹æ‰‹æ³•ã§ã—ãŸã€‚ä»Šå›žã¯ç°¡å˜ã« computed goto ã®ç´¹ä»‹ã‚’ã—ã¦ã¿ã¾ã™ã€‚ ã¨ã‚Šã‚ãˆãš label as value Cè¨€èªžã®è¦
gfx 2010/08/17
a.k.a. direct threaded code

vm

optimization

gcc
ãƒªãƒ³ã‚¯
Faster.pm ã®æœ€é©åŒ– - tokuhirom's blog
Faster.pm ã®æœ€é©åŒ– Faster.pm ãŒã‚„ã£ã¦ã‚‹ã“ã¨ã¯ã€åŸºæœ¬çš„ã«ã¯ Perl VM ãŒã‚„ã£ã¦ã‚‹å‡¦ç†ã‚’ C ã®ã‚³ãƒ¼ãƒ‰ã«ã‹ããã ã—ãŸã ã‘ãªã®ã§ã™ã€‚ç”Ÿæˆã•ã‚Œã¦ã‚‹ C ã®ã‚³ãƒ¼ãƒ‰ã¯ä»¥ä¸‹ã®ã‚ˆã†ãªã‹ã‚“ã˜ã ã€‚ ã“ã“ã‹ã‚‰ã•ã‚‰ã«æœ€é©åŒ–ã§ãã‚Œã°ã€ãã£ã¨é€Ÿãã§ãã‚‹ã®ã ã‘ã©ã€‚ #define PERL_NO_GET_CONTEXT #define PERL_CORE #include <assert.h> #include "EXTERN.h" #include "perl.h" #include "XSUB.h" #if 1 # define faster_PUSHMARK_PREALLOC(count) while (PL_markstack_ptr + (count) >= PL_ markstack_max) markstack_grow () # define faster_PUSHMARK(
gfx 2010/02/05
@tokuhirom++

perl

xs

perlguts

optimization
ãƒªãƒ³ã‚¯
perl5.git.perl.org Git
gfx 2010/01/07
perl

perlguts

optimization

todo
ãƒªãƒ³ã‚¯
1