[B! tuning] overlastã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

overlast id:overlast

tuningã«é–¢ã™ã‚‹overlastã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

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å„ªå‹è³žé‡‘100ä¸‡å††ï¼ä»Šå¹´ã‚‚ã‚„ã‚Šã¾ã™ ISUCON5 é–‹å‚¬ã¨æ—¥ç¨‹ã®ãŠçŸ¥ã‚‰ã› #isucon : ISUCONå…¬å¼Blog
ISUCONã¨ã¯ãŠé¡Œã¨ãªã‚‹Webã‚µãƒ¼ãƒ“ã‚¹ã‚’æ±ºã‚ã‚‰ã‚ŒãŸãƒ¬ã‚®ãƒ¥ãƒ¬ãƒ¼ã‚·ãƒ§ãƒ³ã®ä¸ã§é™ç•Œã¾ã§é«˜é€ŸåŒ–ã‚’å›³ã‚‹ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒãƒˆãƒ«ã€ãã‚ŒãŒISUCONã§ã™ã€‚éŽåŽ»ã®å®Ÿç¸¾ã‚‚æ‰€å±žã—ã¦ã„ã‚‹ä¼šç¤¾ã‚‚å…¨ãé–¢ä¿‚ãªã„ã€çµæžœãŒå…¨ã¦ã®ã‚¬ãƒãƒ³ã‚³ãƒãƒˆãƒ«ã§ã™ã€‚ ã£ã¦ã‚„ã¤ã§ã™ï¼ ä»Šå›žã‚‚LINEæ ªå¼ä¼šç¤¾ã«ã¦ã‚¤ãƒ™ãƒ³ãƒˆã®ä¼ç”»ãƒ»é‹å–¶ãƒ»ä¼šå ´ãƒ»è³žé‡‘æä¾›ãªã©ã‚’è¡Œã„ã¾ã™ã€‚æœ¬é¸ç”¨ã‚µãƒ¼ãƒã¯ä»Šå¹´ã‚‚ãƒ†ã‚³ãƒ©ã‚¹æ ªå¼ä¼šç¤¾ã•ã¾ã«ã”æä¾›ã„ãŸã ãã¾ã™ã€‚æ°—ã«ãªã‚‹ã‚¢ãƒ—ãƒªæä¾›ï¼ˆå‡ºé¡Œï¼‰ã¯ã€ãƒˆãƒ¬ã‚¸ãƒ£ãƒ¼ãƒ‡ãƒ¼ã‚¿æ ªå¼ä¼šç¤¾ã•ã¾ã«ã”å”åŠ›ã„ãŸã ãäº‹ã¨ãªã‚Šã¾ã—ãŸã€‚ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ï¼ åŸºæœ¬çš„ã«ã¯@tagomorisæ°ã€@kamipoæ°ãŒæ‹…å½“ã•ã‚Œã‚‹äºˆå®šã§ã™ãŒã€å•é¡Œä½œæˆæ™‚ã€ã„ãã¤ã‹ã®è¨€èªžã«ã¤ã„ã¦ã¯èª²é¡Œã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã®å®Ÿè£…ã‚’ãŠæ‰‹ä¼ã„ã„ãŸã ã‘ã‚‹æ–¹ã‚’å‹Ÿé›†ã—ã¾ã™ã€‚å¯¾è±¡ã®è¨€èªžã¯Python, PHP, Javaãªã©ã‚’äºˆå®šã—ã¦ã„ã¾ã™ã€‚ï¼ˆãŠæ‰‹ä¼ã„ã„ãŸã ãå ´åˆã¯ISUCON5ã«å‚åŠ ã§ãã¾ã›ã‚“ã€‚ã¾ãŸå¿œå‹ŸãŒãªã„å ´åˆ
overlast 2015/05/27
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isucon

tuning
ãƒªãƒ³ã‚¯
http_load
http_load - multiprocessing http test client Fetch the software. http_load runs multiple http fetches in parallel, to test the throughput of a web server. However unlike most such test clients, it runs in a single process, so it doesn't bog down the client machine. It can be configured to do https fetches as well. You give it a file containing a list of URLs that may be fetched, a flag specifying
overlast 2006/11/17
tuning

apache
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ã»ãˆã»ãˆ Linuxãƒ•ã‚¡ã‚¤ãƒ«I/Oãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°
Linuxã¯ç§ã®ä½¿ã£ã¦ã„ã‚‹ç¯„å›²ã§ã¯ãƒ•ã‚¡ã‚¤ãƒ«I/OãŒãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã«ãªã£ã¦ã„ã‚‹ã“ã¨ãŒå¤šã„ã€‚ã§ã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã®æƒ…å ±ã‚’é›†ã‚ã¦ã¿ã‚‹ã®ã ãŒã€ãªã‹ãªã‹å½¹ç«‹ã¤æƒ…å ±ã‚’å…¥æ‰‹ã§ããªã„ã€‚ æ±ºã¾ã£ã¦å…¨èˆ¬çš„ãªãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã®é€²ã‚æ–¹ã«ã¤ã„ã¦è¿°ã¹ã€æ¬¡ã«ãƒœãƒˆãƒ«ãƒãƒƒã‚¯ã®èª¿ã¹æ–¹ã«ã¤ã„ã¦è¿°ã¹ã‚‹ã€‚ æœ€å¾Œã«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿è¨å®šæ‰‹é †ã®ãƒ’ãƒ³ãƒˆã ã‘ã‚’éžå¸¸ã«ç°¡å˜ã«æŒ™ã’ã¦ãŠã‚ã£ã¦ã—ã¾ã†ã€‚ã„ã‚„ã€ã©ã“ãŒãƒœãƒˆãƒ«ãƒãƒƒã‚¯ãªã®ã‹æœ€åˆã«ä¸€ç™ºã§åˆ†ã‹ã‚Œã°ã„ã„ã‚ˆï¼Ÿ ã§ã‚‚å…¨èˆ¬çš„ãªãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã®é€²ã‚æ–¹ã§ãã†ã—ãŸãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆãŒè¿°ã¹ã¦ã„ã‚‹é€šã‚Šã€è‰²ã€…ãªå¯èƒ½æ€§ã‚’ç¹°ã‚Šè¿”ã—ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã—ãªãŒã‚‰ã¤ã¶ã—ã¦ã„ã‹ãªãã‚ƒã„ã‘ãªã„ã‚“ã ã‚ˆãã€‚ ãã®ãŸã‚ã«ã¯å…·ä½“çš„ãªãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã®è¨å®šæ‰‹é †ãŒãªãã‚ƒã§ããªã„ã‚“ã ã‚ˆãã€‚ãã‚Œã‚’æ•™ãˆã‚ã‚ˆï¼ãã‚Œã‚’ï¼ ã¨ã„ã†ã“ã¨ã§ã€ä»Šå›žã¯Linuxãƒ•ã‚¡ã‚¤ãƒ«I/Oãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã«ã¤ã„ã¦èª¿ã¹ãŸã€‚å¤§ããªãƒ•ã‚¡ã‚¤ãƒ«ã®æ›¸ãè¾¼ã¿(ex. cpã‚³ãƒžãƒ³ãƒ‰)ã‚’è¡Œã†ã¨ã€
overlast 2006/10/15
linux

tuning
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DBã‚µãƒ¼ãƒå‘ã‘Linuxãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã‚’è€ƒãˆã‚‹ ã€œ ãƒ¡ãƒ¢ãƒªã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆç·¨ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
Cã§ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ã„ã¦ã„ã¦å¤§é‡ã®ãƒ¡ãƒ¢ãƒªã‚’ç¢ºä¿ã—ãŸããªã£ãŸã¨ãã€å¤§æŠµã¯ mallocã‚’ä½¿ã†ã¨æ€ã„ã¾ã™ãŒã€ãã®éš›ã«ã¯æˆ»ã‚Šå€¤ãŒNULLã‹ã©ã†ã‹ã‚’åˆ¤æ–ã—ã¦ã‚¨ãƒ©ãƒ¼å‡¦ç†ã«é£›ã°ã™ã¨æ€ã„ã¾ã™ã€‚ã—ã‹ã—ã€Linux ã®ãƒ¡ãƒ¢ãƒªç®¡ç†ã‚µãƒ–ã‚·ã‚¹ãƒ†ãƒ ã«ã¯ã€Œãƒ¡ãƒ¢ãƒªãƒ»ã‚ªãƒ¼ãƒãƒ¼ã‚³ãƒŸãƒƒãƒˆã€ã¨ã„ã†æ©Ÿæ§‹ãŒã‚ã‚Šã€å®Ÿè£…ã•ã‚Œã¦ã„ã‚‹ãƒ¡ãƒ¢ãƒªä»¥ä¸Šã®é ˜åŸŸã‚’ç¢ºä¿ã§ãã¦ã—ã¾ã„ã¾ã™ã€‚ #include <stdio.h> #include <stdlib.h> int main() { int i; char *p; for(i=0;i<65536;i++){ p = (char *)malloc(65536); if(0 == (long)p){ break; } } printf("SIZE=%dMB\n",i*65536/1024/1024); return(0); } swapoff ã—ãŸãƒ¡ãƒ¢ãƒª 1G ã®ãƒžã‚·ãƒ³ã§ã“ã‚Œã‚’å®Ÿè¡Œã™ã‚‹ã¨ã“ã‚“ãªæ„Ÿã˜ã«ãª
overlast 2006/09/20
linux

tuning

db
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Flickré–‹ç™ºè€…ãŒèªžã‚‹ãƒãƒƒãƒˆã‚µãƒ¼ãƒ“ã‚¹ã®é«˜é€ŸåŒ–æ–¹æ³•
Web2.0ã¨ã—ã¦ããã‚‰ã‚Œã‚‹ã‚¿ã‚¤ãƒ—ã®å„ç¨®ãƒãƒƒãƒˆã‚µãƒ¼ãƒ“ã‚¹ã€ã„ã‚ã‚†ã‚‹ã‚¦ã‚§ãƒ–ã‚¢ãƒ—ãƒªã¯ä»¥å‰ã¨ã¯æ¯”è¼ƒã«ãªã‚‰ãªã„ã»ã©å‹•çš„ç”Ÿæˆã•ã‚Œã‚‹ã‚‚ã®ãŒå¤šãã€çµæžœã¨ã—ã¦ã‚‚ã®ã™ã”ã„è² è·ã‚’ã‚·ã‚¹ãƒ†ãƒ ã«ã‹ã‘ã‚‹ã‚ã‘ã§ã™ã€‚ ã¨ã„ã†ã‚ã‘ã§ã€æµ·å¤–ã«ãŠã‘ã‚‹ãƒ‡ã‚¸ã‚«ãƒ¡ç”»åƒå…±æœ‰ã‚µãƒ¼ãƒ“ã‚¹ã®ä»£è¡¨çš„ãªã‚‚ã®ã§ã‚ã‚‹ã€ŒFlickrã€ã®é–‹ç™ºè€…ãŒJavaScriptã‚’é«˜é€ŸåŒ–ã™ã‚‹æ‰‹æ³•ã«ã¤ã„ã¦è§£èª¬ã—ã¦ã„ã¾ã™ã€‚ Vitamin Features >> Serving JavaScript Fast æ‰‹é †ã‚’åˆ†å‰²ã—ã¦ç°¡å˜ã«ã—ã¦ã¿ãŸã‚Šã€ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚’ä½¿ã£ãŸã‚Šã€è»¢é€é‡ã‚’åœ§ç¸®ã—ã¦å¸¯åŸŸã‚’ç¯€ç´„ã—ãŸã‚Šã„ã‚ã„ã‚ã‚ã‚‹ã‚ˆã†ã§ã™ã€‚ãªãŠã€GIGAZINEã¯ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚·ã‚¹ãƒ†ãƒ ã‚’æŽ¡ç”¨ã—ã¦æœ‰åŠ¹æ´»ç”¨ã™ã‚‹ã“ã¨ã§è² è·ã‚’ç¾åœ¨ã€å½“åˆã®12åˆ†ã®1ã«æŠ‘ãˆã¦ã„ã¾ã™ã€‚ ã¾ãŸã€ã“ã£ã¡ã¯ãƒªãƒãƒ¼ã‚¹ãƒ—ãƒã‚ã‚·ã«ã‚ˆã‚‹é«˜é€ŸåŒ–æ‰‹æ³•ã€‚ ViSolve.com - Squid Support Service Apacheã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«
overlast 2006/05/26
development

tuning

apache

flickr
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