Writing Fast JavaScript For Games & Interactive Applications
Recent versions of JavaScript engines are designed to execute large bodies of code very fast but if you don't know how JavaScript engines work internally you could easily degrade your application's performance. It's specially true for games that need every drop of performance they can get. In this article I will try to explain some common optimization methods for JavaScript code that I picked up d
サイトパフォーマンス計測ツールã®å‹˜æ‰€ - ワザノム| wazanova
http://aerotwist.com/blog/my-performance-audit-workflow/ 1 comment | 0 points | by WazanovaNews â– comment by Jshiike | ç´„3æ™‚é–“å‰ Googleã®Paul LewisãŒã‚µã‚¤ãƒˆãƒ‘フォーマンスツールを使ã£ãŸã¨ãã®å‹˜æ‰€ã‚’ã¾ã¨ã‚ã¦ã„ã¾ã™ã€‚ PageSpeed Insights 100点をã¨ã‚‹ã®ãŒé‡è¦ã§ã¯ãªãã€"Consider Fixing" ã¨ã§ãŸè¨ˆæ¸¬çµæžœé …ç›®ã«å¯¾ã—ã¦ã€æŽ¡ç”¨ã—ãªã„ã®ã§ã‚ã‚Œã°ã€æŽ¡ç”¨ã—ãªã„リーズナブルãªç†ç”±ã‚’明確ã«ã—ã¦ãŠãã®ãŒå¤§äº‹ã€‚ モãƒã‚¤ãƒ«ã§85点ã€ãƒ‡ã‚¹ã‚¯ãƒˆãƒƒãƒ—ã§90点ãŒç›®æ¨™ã€‚ PageSpeed Insightsã§ã¯ã€viewportè¨å®š / タップターゲットã®ã‚µã‚¤ã‚º / フォントサイズãªã©ã€User Experienceã®æŒ‡æ‘˜é …目も確èªã•ã‚ŒãŸã—。 WebPag
2è¡Œè¿½åŠ ã™ã‚‹ã ã‘ã§Webサイトを高速化ã™ã‚‹InstantClick.io - atskimura-memo
Before visitors click on a link, they hover over that link. Between these two events, 200 ms to 300 ms usually pass by (test yourself here). 引用：InstantClick — JS library to make your website instant リンクã«ãƒžã‚¦ã‚¹ã‚ªãƒ¼ãƒãƒ¼ã—ã¦ã‹ã‚‰ã‚¯ãƒªãƒƒã‚¯ã™ã‚‹ã¾ã§ã«ã¯200msã‹ã‚‰300msã»ã©æ™‚é–“ãŒã‹ã‹ã‚‹ãã†ã§ã™ã€‚実際ã“ã®ãƒ†ã‚¹ãƒˆãƒšãƒ¼ã‚¸ã§ã‚¯ãƒªãƒƒã‚¯ã—ã¦ã¿ã‚‹ã¨Macã®ãƒˆãƒ©ãƒƒã‚¯ãƒ‘ッドã ã¨ã•ã‚‰ã«é…ã500msãらã„ã‹ã‹ã£ã¦ã¾ã—ãŸã€‚ InstantClick.ioã¯ãã®é–“ã«è£ã§ãƒªãƒ³ã‚¯å…ˆãƒšãƒ¼ã‚¸ã‚’ãƒãƒ¼ãƒ‰ã—ã¦å‹æ‰‹ã«ãƒªãƒ³ã‚¯ã‚’pjax化ã—ã¦ã—ã¾ã†ã¨ã„ã†é«˜é€ŸåŒ–ライブラリã§ã™ã€‚ ã‚„ã£ã¦ã‚‹ã“ã¨ã¯Rails4ã®turbolinksã¨ä¼¼ã¦ã¾ã™
Phoronix Test Suite
The Phoronix Test Suite is the most comprehensive testing and benchmarking platform available that provides an extensible framework for which new tests can be easily added. The Phoronix Test Suite is designed to effectively carry out both benchmarks in a clean, reproducible, and easy-to-use manner. Features Easy-To-UseExtensible ArchitectureStatistical AccuracySystem MonitoringMulti-PlatformAutono
BootstrapサイトをPageSpeed Insightã§æº€ç‚¹ã‚’ã¨ã‚‹ã¾ã§æ”¹å–„ã™ã‚‹ - ワザノム| wazanova
http://calendar.perfplanet.com/2013/breaking-the-pagespeed-barrier-with-bootstrap/1 comment | 0 pointsDan RitiãŒã€Bootstrapを利用ã—ãŸã‚µãƒ³ãƒ—ルサイトをPageSpeed Insightã®ã‚¹ã‚³ã‚¢ãŒ100点ã«ãªã‚‹ã¾ã§æ”¹å–„ã—ãŸå–組ã¿ã‚’紹介ã—ã¦ã¾ã™ã€‚ 1) Bootstrap off the shelf [ Mobile Score: 77, Desktop Score: 90, DOMContentLoaded: 833ms ] 2) Enabled mod_pagespeed [ Mobile Score: 80, Desktop Score: 93, DOMContentLoaded: 660ms ] PageSpeedã®ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã®ãƒ•ã‚£ãƒ«ã‚¿ãƒ¼ã‚’有効ã«ã™ã‚‹ã ã‘ã§ã¯3ãƒã‚¤ãƒ³ãƒˆã—
アップダイナミクス | APMã§é‡è¦ã‚·ã‚¹ãƒ†ãƒ ã®å®‰å®šæ€§ã¨åŽç›Šæ€§ã‚’高ã‚ã‚‹
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TheC10kProblem - 「C10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1万å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚クライアントã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ンクã™ã‚‹å•é¡Œã®ã“ã¨
TheC10kProblem - 「C10Kå•é¡Œã€ï¼ˆã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆ1万å°å•é¡Œï¼‰ã¨ã¯ã€ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã®æ€§èƒ½ä¸Šã¯å•é¡ŒãŒãªãã¦ã‚‚ã€ã‚ã¾ã‚Šã«ã‚‚クライアントã®æ•°ãŒå¤šããªã‚‹ã¨ã‚µãƒ¼ãƒãŒãƒ‘ンクã™ã‚‹å•é¡Œã®ã“㨠目次 ã“ã®æ–‡æ›¸ã«ã¤ã„㦠C10K å•é¡Œ 関連サイト ã¾ãšèªã‚€ã¹ã本 I/O フレームワーク I/O 戦略 1. å„スレッドãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘付ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ング I/O 㨠レベル・トリガ型ã®å®Œäº†é€šçŸ¥ã‚’利用ã™ã‚‹. ä¼çµ±çš„㪠select() ä¼çµ±çš„㪠poll() /dev/poll kqueue() 2. å„スレッドãŒè¤‡æ•°ã®ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã‚’å—ã‘付ã‘ã‚‹. ãã—ã¦ãƒŽãƒ³ãƒ–ãƒãƒƒã‚ング I/O 㨠変更型ã®å®Œäº†é€šçŸ¥(readiness change notification)を利用ã™ã‚‹. kqueue() epoll リアルタイム・シグナル fd å˜ä½ã®ã‚·ã‚°ãƒŠãƒ« (Signal-per-fd)
ファイルシステムã¨ãƒ‘フォーマンス - nothing but trouble
数ヶ月å‰ã€ã†ã¡ã®ã‚ªãƒ¼ã‚¹ãƒˆãƒ©ãƒªã‚¢äººã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãŒã€ãƒ•ã‚¡ã‚¤ãƒ«ã‚·ã‚¹ãƒ†ãƒ 毎ã®MySQLã®ãƒ™ãƒ³ãƒã‚’InnoDB,MyIsamã§å–ã£ã¦ã¿ãŸã¨ã„ã†è©±ã‚’ã—ã¦ãã¦ã€ãã®çµæžœã‚’凄ãæ„外ã«æ€ã£ãŸã“ã¨ãŒã‚ã£ãŸã€‚ æ•°å万オーダーã®ãƒ™ãƒ³ãƒã§ã€ext2ãŒåœ§å€’çš„ã«é€Ÿã‹ã£ãŸã‚‰ã—ã„。ãã®ã‚ã¨ã¯ã€reiserfs,ext3,xfs,jfsã¨ã‹ãã‚“ãªæ„Ÿã˜ã®é †ç•ªã ã£ãŸã£ã‘？ext2ãŒæ—©ã„ã£ã¦ã„ã†ã“ã¨ãŒæ„外ã™ãŽã¦ã‚ã¾ã‚Šè¦šãˆã¦ã„ãªã„。 ãã‚Œã ã‘ã€ã‚¸ãƒ£ãƒ¼ãƒŠãƒ«å–るコストãŒé«˜ã„ã£ã¦ã“ã¨ãªã®ã‹ãªã€‚ CRUD特性やDB構æˆã«ã‚‚寄るんã ã‚ã†ã‘ã©ã€ã†ã¡ã¿ãŸã„ãªIOè² è·ãŒé«˜ãã¦master-slaveãªæ§‹æˆã®DBã§å»»ã—ã¦ã„ã‚‹Webシステムãªã‚“ã‹ã«ã¯ext2ã§å分ã˜ã‚ƒãªã„ã®ã‹ã¨ã„ã†è©±ã«ãªã£ã¦ã€è©²å½“ã™ã‚‹ã‚‚ã®ã«é–¢ã—ã¦ã¯ã€ext2ã«ã—ãŸã€‚ ãã‚‚ãã‚‚ã€master-slave構æˆã®æ™‚点ã§ã€ã‚¸ãƒ£ãƒ¼ãƒŠãƒªãƒ³ã‚°ã¯æ®†ã©å¿…è¦ãªã„ã ã‚ã†ã¨ãŠã‚‚ã†ã€‚ケアã™ã‚‹å¿…è¦ãŒã‚ã‚‹ã®ã¯ã€ä¸€åº¦ã«
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PageSpeed Insights
High Performance Web Frontend 2013 秋
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