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

iwazer id:iwazer

tuningã«é–¢ã™ã‚‹iwazerã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (84)

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Fate/Grand Orderã«ãŠã‘ã‚‹ å¤§è¦æ¨¡ãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ç§»è¡Œã¨è² è·è©¦é¨“.pdf
Copyright 2019 DELiGHTWORKS Inc. All Rights Reserved. Fate/Grand Orderã«ãŠã‘ã‚‹ å¤§è¦æ¨¡ãªãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ç§»è¡Œã¨è² è·è©¦é¨“ 2019å¹´6æœˆ14æ—¥ ä»Šäº• å®ˆç”Ÿ Copyright 2019 DELiGHTWORKS Inc. All Rights Reserved. è³‡æ–™ã¯å…¬é–‹äºˆå®šã§ã™ æœ¬ã‚»ãƒƒã‚·ãƒ§ãƒ³ã§ã¯ä»¥ä¸‹ã®å†…å®¹ã‚’ãŠè©±ã—ã¾ã™ AWS Database Migration Serviceã‚’ä½¿ã£ãŸå¤§è¦æ¨¡ãªDBç§»è¡Œäº‹ä¾‹ï¼ˆåž‚ç›´åˆ†å‰²â†’æ°´å¹³åˆ†å‰²ï¼‰ ç§»è¡Œå¾Œã«æƒ³å®šãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’æŒã‘ã‚‹ã“ã¨ã‚’æ¤œè¨¼ã™ã‚‹ãŸã‚ã®è² è·è©¦é¨“æ‰‹æ³• å¼Šç¤¾ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ãŒéŽåŽ»ã«2å›žã€DBç§»è¡Œã‚’ä¸»ãªãƒˆãƒ”ãƒƒã‚¯ã¨ã—ãŸè¬›æ¼”ã‚’è¡Œã£ã¦ã„ã¾ã™ ã®ã§ã“ã¡ã‚‰ã‚‚ã”å‚ç…§ãã ã•ã„ ã“ã‚Œã§æ€–ããªã„ï¼ï¼Ÿå¤§è¦æ¨¡ç’°å¢ƒã§ä½“é¨“ã™ã‚‹DBè² è·å¯¾ç–ï½žåž‚ç›´ã‹ã‚‰æ°´å¹³ã®å½¼æ–¹ã¸ï½ž /ç”² https://www.slideshare.n
iwazer 2020/04/27
game

db

tuning
ãƒªãƒ³ã‚¯
The Complete Guide to Rails Performance
Learn how to transf orm your snail-paced Rails app into a sub-100 millisecond powerhouse. The Complete Guide to Rails Performance is a full-stack course that gives you the tools to make your Ruby on Rails applications faster and more delightful for users, scale better and for less money, and take less effort to maintain. 3rd Edition: Updated for Rails 5 through Rails 7.1 Why is your Rails applicati
iwazer 2017/09/20
rails

tuning

performance
ãƒªãƒ³ã‚¯
Optcarrot: Ruby ã§æ›¸ã‹ã‚ŒãŸãƒ•ã‚¡ãƒŸã‚³ãƒ³ã‚¨ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚¿ - ã¾ã‚ã‚ã‚‚
ã‚¦ã‚½ã¿ãŸã„ãªæœ¬å½“ã®è©±ã€‚Ruby ã§ãƒ•ã‚¡ãƒŸã‚³ãƒ³ã‚¨ãƒŸãƒ¥ãƒ¬ãƒ¼ã‚¿ã‚’æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚ æ°—ã«ãªã‚‹é€Ÿåº¦ã§ã™ãŒã€è‡ªåˆ†ã®ç’°å¢ƒã§ã¯ 20 fps ã¡ã‚‡ã£ã¨å‡ºã¾ã™ã€‚ãƒ•ã‚¡ãƒŸã‚³ãƒ³ã¯ 60 fps ãªã®ã§ã€å®Ÿé€Ÿã® 1/3 ã§ã™ã€‚Ruby3x3 ï¼ˆRuby 3 ã¯ Ruby 2 ã® 3 å€é€Ÿã„ï¼‰ã¨ã„ã† matz ã®å®£è¨€ãŒå®Ÿç¾ã™ã‚Œã°ã€å®Ÿé€ŸãŒé”æˆã•ã‚Œã‚‹ã“ã¨ã«ãªã‚Šã¾ã™ãï¼ è©¦ã—ã¦ã¿ãŸã„äººã¯ã“ã‚“ãªãµã†ã«å®Ÿè¡Œã—ã¦ãã ã•ã„ã€‚ $ gem install ffi $ git clone http://github.com/mame/optcarrot.git $ cd optcarrot $ bin/optcarrot examples/Lan_Master.nesSDL2 ã‹ SFML ãŒé©åˆ‡ã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã¦ã„ã‚‹å¿…è¦ãŒã‚ã‚Šã¾ã™ã€‚Debian/Ubuntu ãªã‚‰ apt-get install libsdl2-dev ã§ã€‚ Ru
iwazer 2016/04/01
æ³¨:ã‚¨ã‚¤ãƒ—ãƒªãƒ¼ãƒ«ãƒ•ãƒ¼ãƒ«ãƒã‚¿ã§ã¯ãªã„ãƒˆãƒŽã‚³ãƒˆ

ruby

tuning
ãƒªãƒ³ã‚¯
HTTP/2 Push ã‚’ Service Worker + Cache Aware Server Push ã§åŠ¹çŽ‡åŒ–ã—ãŸã„è©± - Block Rockinâ€™ Codes
intro ã“ã®ã‚¨ãƒ³ãƒˆãƒªã¯ã€ã€€http2 advent calendar ã® 1 æ—¥ç›®ã§ã™ã€‚ http2study ã®åˆ†ã‹ã£ã¦ã‚‹äººã«ã¨ã£ã¦ã¯ã€ã€Œcasper ã® JS ç‰ˆã‚’ä½œã£ã¦ã‚‹ã€ã ã‘ã§ä¼ã‚ã‚‹ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ãŒã€ãã†ã§ãªã„å ´åˆéžå¸¸ã«è©±ã™ã¹ãã“ã¨ãŒãŸãã•ã‚“æœ‰ã‚‹æ°—ãŒã™ã‚‹ã®ã§ã€é †ã‚’è¿½ã£ã¦èª¬æ˜Žã—ã¾ã™ã€‚ ä»Šå›žç†è§£ã™ã¹ãå†…å®¹ã¯ä»¥ä¸‹ http2 push ã®å•é¡Œç‚¹ cache aware server push bloom filter ã¨ golomb coded set cache fingerprinting dispenser.js (æœ€åˆã¯ casper.js ã¨è¨€ã£ã¦ãŸã‘ã©ã€ã‚ˆãè€ƒãˆã‚‹ã¨è¢«ã£ã¦ã‚‹ã®ãŒã‚ã‚‹ã®ã§ dispenser.js ã«å¤‰ãˆã¾ã—ãŸ) ãã—ã¦çµè«–ã‹ã‚‰ã„ã†ã¨ã€ã¾ã ã¾ã æƒ³å®šã—ã¦ã„ãŸæŒ™å‹•ã¾ã§ã¯ã„ã‘ã¾ã›ã‚“ã§ã—ãŸã€‚ã€‚ http2 push ã®å•é¡Œç‚¹ http2 ã§ push ã™ã‚‹ã“ã¨ã§ã€
iwazer 2015/12/02
http2

tuning
ãƒªãƒ³ã‚¯
Rubyã§abã‚³ãƒžãƒ³ãƒ‰ã‚’ãƒ—ãƒã‚°ãƒ©ãƒžãƒ–ãƒ«ã«æ“ä½œã§ãã‚‹ab-mrubyã‚’æ¥å‹™ã§ä½¿ã£ã¦ã¿ãŸã‘ã©ã¾ãã¾ãè‰¯ã‹ã£ãŸ - äººé–“ã¨ã‚¦ã‚§ãƒ–ã®æœªæ¥
1å¹´å‰ãã‚‰ã„ã«ab-mrubyã¨ã„ã†ã€Rubyã§abã‚³ãƒžãƒ³ãƒ‰ã‚’ãƒ—ãƒã‚°ãƒ©ãƒžãƒ–ãƒ«ã«æ“ä½œãƒ»æ‹¡å¼µã§ãã‚‹ãƒ„ãƒ¼ãƒ«ã‚’ä½œã£ã¦ã„ãŸã®ã§ã™ãŒã€ãã‚Œã‚’æ¥å‹™ã®ã¨ã‚ã‚‹ç’°å¢ƒã§ä½¿ã£ã¦ã¿ãŸã¨ã“ã‚ã¾ãã¾ãè‰¯ã‹ã£ãŸã®ã§ãã®ä½¿ã„æ–¹ã‚’ç´¹ä»‹ã—ã‚ˆã†ã¨æ€ã„ã¾ã™ã€‚ github.com ã¨ã„ã†ã®ã‚‚ã€ç‰¹å®šã®æ¡ä»¶ã§ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã§è² è·ã‚’ã‹ã‘ã¦ã„ãã¨ãƒ—ãƒã‚»ã‚¹ãŒãƒãƒ³ã‚°ã™ã‚‹ã¨ã„ã†çŠ¶æ³ãŒã‚ã£ã¦ã€ãã®çŠ¶æ³ã‚’å†ç¾ã™ã‚‹ãŸã‚ã«abã‚³ãƒžãƒ³ãƒ‰ã§ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã‚’ã‹ã‘ã¦ã„ãŸã®ã§ã™ãŒã€abã‚³ãƒžãƒ³ãƒ‰ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãŒãƒ‘ãƒƒã¨è¦‹ã‚ã‹ã‚Šãšã‚‰ã‹ã£ãŸã‚Šã€ã©ã®ãƒ›ã‚¹ãƒˆã®ã©ã®ãƒ‘ã‚¹ã«ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã‚’ã‹ã‘ã¦ã„ã‚‹ã‹ãªã©ã‚’ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆã§æ›¸ã„ã¦ã„ã¦ã€ ã‚ã‚Œã€ã“ã‚ŒRubyã®DSLã§è¡¨ç¾ã—ãŸæ–¹ãŒã‚ã‹ã‚Šã‚„ã™ããªã„ï¼Ÿ ã¨æ€ã£ã¦ã€ab-mrubyã‚’ä½œã£ã¦ã„ãŸã“ã¨ã‚’æ€ã„å‡ºã—ã€Rubyã§æ›¸ã„ã¦ã¿ã¾ã—ãŸã€‚ target_hosts = ["test001.example.jp", "test002.example.jp
iwazer 2015/07/16
http

tuning

tools

mruby
ãƒªãƒ³ã‚¯
ã‚µãƒ¼ãƒã®è² è·ãƒ†ã‚¹ãƒˆã®ãŸã‚ã®ã€ä½•ç™¾ä¸‡ã‚‚ã®HTTPãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’ç™ºç”Ÿã•ã›ã‚‹æ–¹æ³• | POSTD
(æ³¨è¨˜ï¼š6/9ã€ã„ãŸã ã„ãŸç¿»è¨³ãƒ•ã‚£ãƒ¼ãƒ‰ãƒãƒƒã‚¯ã‚’å…ƒã«è¨˜äº‹ã‚’ä¿®æ£ã„ãŸã—ã¾ã—ãŸã€‚) ä»Šå›žã®è¨˜äº‹ã¯æ¯Žç§’300ä¸‡ã‚‚ã®ãƒªã‚¯ã‚¨ã‚¹ãƒˆã‚’å‡¦ç†ã§ãã‚‹ã»ã©å¼·åŠ›ã§é«˜æ€§èƒ½ãªWebã‚¯ãƒ©ã‚¹ã‚¿ã®æ§‹ç¯‰ã«ã¤ã„ã¦ã®ãƒ‘ãƒ¼ãƒˆ1ã«ãªã‚Šã¾ã™ã€‚ã¾ãšåˆã‚ã«ã€ã‚ã¾ã‚Šå¤šãã¯ã‚ã‚Šã¾ã›ã‚“ãŒã€ç§ãŒã“ã‚Œã¾ã§ä½¿ç”¨ã—ãŸã“ã¨ã®ã‚ã‚‹ãƒãƒ¼ãƒ‰ã‚¸ã‚§ãƒãƒ¬ãƒ¼ã‚¿ãƒ„ãƒ¼ãƒ«ã‚’ã„ãã¤ã‹ç´¹ä»‹ã—ã¾ã™ã€‚ç§ã®ã‚ˆã†ã«ã¦ã“ãšã£ã¦æ™‚é–“ã‚’ã‹ã‘ã¦ã—ã¾ã‚ãªã„ã‚ˆã†ã€ä»Šå›žã®è¨˜äº‹ãŒç†è§£ã®æ‰‹åŠ©ã‘ã«ãªã‚Œã°å¹¸ã„ã§ã™ã€‚ ãƒãƒ¼ãƒ‰ã‚¸ã‚§ãƒãƒ¬ãƒ¼ã‚¿ã¯ãƒ†ã‚¹ãƒˆã‚’ç›®çš„ã¨ã—ãŸæ•°ç¨®é¡žã®ãƒˆãƒ©ãƒ•ã‚£ãƒƒã‚¯ã‚’ç™ºç”Ÿã•ã›ã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ ã§ã™ã€‚ãã‚Œã«ã‚ˆã£ã¦é«˜è² è·ã«ãŠã„ã¦ã‚µãƒ¼ãƒãŒã©ã®ã‚ˆã†ã«å‹•ã„ã¦ã„ã‚‹ã‹ã€ãã®ã‚µãƒ¼ãƒã®å¼±ç‚¹ã¯ã©ã“ãªã®ã‹ã€ãªã©ãŒè¦‹ãˆã¦ãã¾ã™ã€‚è² è·ãƒ†ã‚¹ãƒˆã‚’é€šã˜ã¦ã‚µãƒ¼ãƒã®é™ç•Œã‚’çŸ¥ã‚‹ã“ã¨ã¯ã€ã‚µãƒ¼ãƒã®ãƒ¬ã‚¸ãƒªã‚¨ãƒ³ã‚·ãƒ¼ã‚’æ¸¬å®šã™ã‚‹æœ€é©ãªæ–¹æ³•ã§ã‚ã‚Šã€ã‚ã‚‰ã‚†ã‚‹å•é¡Œã«å¯¾ã™ã‚‹æº–å‚™ã®æ‰‹åŠ©ã‘ã«ã‚‚ãªã‚Šã¾ã™ã€‚ ãƒãƒ¼ãƒ‰ã‚¸ã‚§ãƒãƒ¬ãƒ¼ã‚¿ãƒ„ãƒ¼ãƒ« è² è·ãƒ†ã‚¹ãƒˆã‚’ã™ã‚‹éš›ã«é ã«å…¥ã‚Œã¦ãŠãã¹
iwazer 2015/06/07
server

setup

tuning

test

performance

stress
ãƒªãƒ³ã‚¯
ActiveRecordã‚’é€Ÿãã—ãŸã„ã ã‘ã®äººç”Ÿã ã£ãŸ - Qiita
Help us understand the probl em. What is going on with this article? Rails3.2ã‹ã‚‰Rails4.2ã«ä¸Šã’ãŸã‚‰ActiveRecordãŒé…ããªã£ãŸã®ã§ã€ã©ã†ã‚„ã£ã¦èª¿æŸ»ã—ã¦ã€ã©ã®ã‚ˆã†ã«å¯¾å‡¦ã—ãŸã‹ã‚’èªžã£ã¦ã¿ãŸã„ã€‚ ã¨ã¦ã‚‚é•·ã„ã®ã§ã€ãƒ€ãƒ«ã„äººã¯æœ€åˆã¨æœ€å¾Œã ã‘èªã‚ã°ã‚ˆã„ã§ã™ã€‚ TL;DR ç’°å¢ƒ: Ruby 2.1.5 ARã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã‚’å¤§é‡ã«(ã–ã£ãã‚Š750kãã‚‰ã„)loadã™ã‚‹ãƒãƒƒãƒå‡¦ç† 3.2ç³»ã§ã®å®Ÿè¡Œæ™‚é–“ã¯ç´„480secã€ 4.2ç³»ã§ã¯ç´„2900sec ç´„6å€ã®æ€§èƒ½åŠ£åŒ– åŽŸå› : preloadã§æ€§èƒ½åŠ£åŒ–ã—ã¦ãŸ CollectionProxyã®ç”Ÿæˆå‘¨ã‚Šã§é…ããªã£ã¦ãŸ Rails4ã‹ã‚‰ARã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®1attributeæ¯Žã«Objectç”Ÿæˆã™ã‚‹ã®ã§é…ã„ GCã®æ™‚é–“ã‚‚å¢—ãˆãŸ èª¿æŸ»æ–¹æ³•: Githubã®commitã€Issueã‚’
iwazer 2015/04/15
rails

tuning
ãƒªãƒ³ã‚¯
Linuxã§ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚„ã‚ãƒ£ãƒƒã‚·ãƒ¥ã‚µãƒ¼ãƒã‚’ãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã•ã›ã‚‹ãŸã‚ã®ã‚«ãƒ¼ãƒãƒ«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚° - ã‚†ã†ã†ããƒ–ãƒã‚°
æœ¬è¨˜äº‹ã®å…¬é–‹å¾Œã®2016å¹´7æœˆã«ã¯ã¦ãªã«ãŠã‘ã‚‹ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°äº‹ä¾‹ã‚’ç´¹ä»‹ã—ãŸã€‚ ã¯ã¦ãªã«ãŠã‘ã‚‹Linuxãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ã‚¿ãƒƒã‚¯ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„ / Linux network performance improvement at hatena - Speaker Deck HAProxy ã‚„ nginx ãªã©ã®ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢ãƒãƒ¼ãƒ‰ãƒãƒ©ãƒ³ã‚µã‚„ãƒªãƒãƒ¼ã‚¹ãƒ—ãƒã‚ã‚·ã€memcached ãªã©ã® KVS ã®ã‚ˆã†ãªé«˜ãƒ‘ã‚±ãƒƒãƒˆãƒ¬ãƒ¼ãƒˆã«ãªã‚Šã‚„ã™ã„ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã«ãŠã„ã¦ã€å˜ä¸€ã® CPU ã‚³ã‚¢ã«è² è·ãŒåã‚Šã€ãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã—ãªã„ã“ã¨ãŒã‚ã‚Šã¾ã™ã€‚ ä»Šå›žã¯ã€ã“ã®ã‚ˆã†ãªãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã«ãŠã„ã¦ CPU è² è·ãŒãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã—ãªã„ç†ç”±ã¨ã€ãƒžãƒ«ãƒã‚³ã‚¢ã‚¹ã‚±ãƒ¼ãƒ«ã•ã›ã‚‹ãŸã‚ã® Linux ã‚«ãƒ¼ãƒãƒ«ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¹ã‚¿ãƒƒã‚¯ã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°æ‰‹æ³•ã¨ã—ã¦ RFS (Receive Flow Steering) ã‚’
iwazer 2015/04/02
server

setup

tuning
ãƒªãƒ³ã‚¯
Goã®database/sql.Stmtã®ã‚¹ã‚±ãƒ¼ãƒ©ãƒ“ãƒªãƒ†ã‚£ã‚’æ”¹å–„ã—ã¾ã—ãŸ : DSASé–‹ç™ºè€…ã®éƒ¨å±‹
å…ˆæ—¥ã€ Goã«åˆã‚ã¦ç§ã®ãƒ‘ãƒƒãƒãŒå–ã‚Šè¾¼ã¾ã‚Œ ã€ã‚³ãƒ³ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚¿ã«ä»²é–“å…¥ã‚Šã—ã¾ã—ãŸã€‚ ã“ã®ãƒ‘ãƒƒãƒã¯ã€ database/sql.Stmt ã‚’ãƒ˜ãƒ“ãƒ¼ã«ä½¿ã£ãŸæ™‚ã«æ€§èƒ½ãŒã ã„ãŸã„16ã‚³ã‚¢ä»¥ä¸Šã®ã‚³ã‚¢æ•°ã«ã‚¹ã‚±ãƒ¼ãƒ«ã—ãªã„ã¨ã„ã†å•é¡Œã‚’è§£æ±ºã™ã‚‹ã‚‚ã®ã§ã™ã€‚ ã“ã†ã„ã£ãŸå•é¡Œã‚’ã©ã†ã‚„ã£ã¦èª¿æŸ»ã™ã‚‹ã®ã‹ã¨ã€Goã«ãƒ‘ãƒƒãƒãŒå–ã‚Šè¾¼ã¾ã‚Œã‚‹ã¾ã§ã®æ‰‹é †ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ èƒŒæ™¯ ç§ã¯ Tech Empower ã® FrameworkBenchmarks ã¨ã„ã†ã€ã„ã‚ã‚“ãªè¨€èªž/ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã§åŒä¸€ã®ã‚¢ãƒ—ãƒªã‚’ä½œã£ã¦ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã™ã‚‹ã¨ã„ã†ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§ã€ä¸»ã«Pythoné–¢é€£ã®ãƒ¡ãƒ³ãƒ†ãƒŠã‚’ã—ã¦ã„ã¾ã™ã€‚ Goã«ã‚‚èˆˆå‘³ãŒã‚ã‚‹ã®ã§ã€Ginã¨ã„ã†ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã‚’è¿½åŠ ã—ãŸã‚Šã‚³ãƒ¼ãƒ‰ãƒ¬ãƒ“ãƒ¥ãƒ¼ã«å‚åŠ ã—ãŸã‚Šã—ã¦ã„ã¾ã™ã€‚ 2014-05-01 ã«è¡Œã‚ã‚ŒãŸå‰å›žã®ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ Round 9 ã§ã¯ã€ PEAK Hosting ãŒå®Ÿè¡Œç’°å¢ƒã«åŠ ã‚ã‚Šã¾ã—ãŸã€‚ã“ã®ç’°å¢ƒã¯ã€ãƒ‡ãƒ¥
iwazer 2015/01/27
ã¡ã‚‡ã£ã¨èˆˆå¥®ã—ãŸ

golang

db

tuning
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HTTPãƒ‘ãƒ¼ã‚µã«ãŠã‘ã‚‹SSE4.2æœ€é©åŒ–ã®å¨åŠ›ã¨æ³¨æ„ç‚¹ - Cybozu Inside Out | ã‚µã‚¤ãƒœã‚¦ã‚ºã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ–ãƒã‚°
ã“ã‚“ã«ã¡ã¯ã€ã‚µã‚¤ãƒœã‚¦ã‚ºãƒ»ãƒ©ãƒœã®å…‰æˆã§ã™ã€‚ PicoHTTPParserã¯@kazuhoã•ã‚“ãŸã¡ãŒé–‹ç™ºã—ã¦ã„ã‚‹é«˜é€ŸãªHTTPãƒ‘ãƒ¼ã‚µã§ã™ã€‚ åŒã˜ä½œè€…ã«ã‚ˆã‚‹HTTPã‚µãƒ¼ãƒH2Oã«ã‚‚ä½¿ã‚ã‚Œã¦ã„ã¾ã™ã€‚ 11æœˆ4æ—¥ã®é–‹ç™ºãƒ–ãƒã‚°ã«ã‚ˆã‚‹ã¨ã€ãã®æ™‚ç‚¹ã§Node.jsãªã©ã«ä½¿ã‚ã‚Œã¦ã„ã‚‹http-parserã®10å€ç¨‹åº¦ã®é€Ÿåº¦ã‚’èª‡ã‚‹ãã†ã§ã™ï¼ˆç¾åœ¨ã¯http-parserã‚‚é€Ÿåº¦å‘ä¸Šã—ãã®å·®ã¯ç¸®ã¾ã‚Šã¾ã—ãŸã€‚ãã‚Œã§ã‚‚4å€ä»¥ä¸Šã®å·®ãŒã‚ã‚‹ã‚ˆã†ã§ã™ï¼‰ã€‚ è©²å½“ãƒ–ãƒã‚°ã«ã¯ãã®é«˜é€ŸåŒ–ã®ãŸã‚ã®ãƒŽã‚¦ãƒã‚¦ãŒæ›¸ã‹ã‚Œã¦ã„ã¦å¤§å¤‰èˆˆå‘³æ·±ã„ã§ã™ã€‚ãŸã Intelç³»CPUã«æè¼‰ã•ã‚Œã¦ã„ã‚‹SIMDå‘½ä»¤ã¯ç”¨ã„ã‚‰ã‚Œã¦ã„ã¾ã›ã‚“ã§ã—ãŸã€‚ä»Šå›žã€@kazuhoã•ã‚“ã¨ä¸€ç·’ã«æ–‡å—åˆ—å‡¦ç†å°‚ç”¨ã®SSE4.2ã‚’ç”¨ã„ã‚‹ã“ã¨ã§1.7ï½ž1.9å€ã®é«˜é€ŸåŒ–ã‚’é”æˆã—ã¾ã—ãŸï¼ˆImproving Parser Performance using SSE Instructions (in
iwazer 2014/12/04
programming

tuning

c
ãƒªãƒ³ã‚¯
SQLãƒ‡ãƒ¼ã‚¿ãƒ™ãƒ¼ã‚¹ã«æ£ã—ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ã‚’ä½œã‚‹ã®ã¯ èª°ã®å½¹å‰²ï¼Ÿ
SQLã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å•é¡Œã¯ã€SQLãã®ã‚‚ã®ã¨åŒã˜ãã‚‰ã„ã®æ´å²ãŒã‚ã‚‹â€•â€• ã‚ã‚‹äººã¯ã€SQLã¯ãã‚‚ãã‚‚é…ã„ã‚‚ã®ã ã¨ã™ã‚‰è¨€ã†ã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ã€‚ã“ã‚Œã¯ã€SQLã®æ´å²ãŒå§‹ã¾ã£ãŸé ƒã¯æ£ã—ã‹ã£ãŸã‹ã‚‚ã—ã‚Œã¾ã›ã‚“ãŒã€ä»Šã¨ãªã£ã¦ã¯å…¨ã å½“ã¦ã¯ã¾ã‚‰ãªã„ã§ã—ã‚‡ã†ã€‚ã«ã‚‚ã‹ã‹ã‚ã‚‰ãšã€SQLã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å•é¡Œã¯ä»Šã‚‚ä¸€èˆ¬çš„ã§ã‚ˆãã‚ã‚‹ã“ã¨ã§ã™ã€‚ã©ã†ã—ã¦ãã†ãªã£ã¦ã—ã¾ã†ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿ SQLè¨€èªžã¯ã€æã‚‰ãæœ€ã‚‚æˆåŠŸã—ãŸç¬¬4ä¸–ä»£è¨€èªž(4GL)ã§ã—ã‚‡ã†ã€‚ãã®æœ€å¤§ã®åˆ©ç‚¹ã¯ã€ã€Œä½•ã‚’ã€ã¨ã€Œã©ã®ã‚ˆã†ã«ã€ ã‚’åˆ†é›¢ã§ãã‚‹ã“ã¨ã§ã™ã€‚SQLæ–‡ã¯ã€ã©ã®ã‚ˆã†ã«ãã‚Œã‚’å®Ÿè¡Œã™ã‚‹ã‹ã‚’è¨˜è¿°ã›ãšã«ã€å˜ç´”ã« ä½•ã‚’å¿…è¦ã¨ã—ã¦ã„ã‚‹ã‹ã®ã¿ã®è¨˜è¿°ã«ãªã£ã¦ã„ã¾ã™ã€‚ä»¥ä¸‹ã®ã‚ˆã†ãªä¾‹ã‚’è€ƒãˆã¦ã¿ã¾ã—ã‚‡ã†ã€‚ SELECT date_of_birth FROM employees WHERE last_name = 'WINAND'SQLã®ã‚¯ã‚¨ãƒªã¯ã€ãƒ‡ãƒ¼ã‚¿ã‚’è¦æ±‚ã™ã‚‹è‹±èªžã®æ–‡ã¨ã—ã¦èª
iwazer 2014/10/19
sql

tuning
ãƒªãƒ³ã‚¯
ã€Žã‚¢ãƒ¡ãƒ¼ãƒãƒ”ã‚°ã«ãŠã‘ã‚‹DBæ§‹æˆ&å¯¾å¿œè¨˜ã€
2ãƒ¶æœˆå‰ã«ã‚¤ãƒ³ãƒ•ãƒ«ã‚¨ãƒ³ã‚¶ã¨ã‚¦ã‚£ãƒ«ã‚¹æ€§èƒƒè…¸ç‚Žã§ã²ã©ããƒ€ãƒ¡ãƒ¼ã‚¸ã‚’å—ã‘ãŸå¢—ç”°(@masudaK)ã§ã™ã€‚ã‚¢ãƒ¡ãƒ¼ãƒãƒ”ã‚°ã¯2009å¹´2æœˆã«å§‹ã¾ã£ãŸã‚µãƒ¼ãƒ“ã‚¹ã§ã€FLASHãƒ»Javaã§ä½œã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ãã—ã¦ã€ãƒ‡ãƒ¼ã‚¿ã‚¹ãƒˆã‚¢ã«MySQLã‚’ç”¨ã„ã¦ã¾ã™ã€‚æœ¬è¨˜äº‹ã§ã¯ã€ã‚ãŸãã—ãŒ2å¹´ã»ã©è¦‹ç¶šã‘ã¦ã„ã‚‹ã‚¢ãƒ¡ãƒ¼ãƒãƒ”ã‚°ã®DBç’°å¢ƒã«ã¤ã„ã¦æ§‹æˆã‚„ã€æ—¥ã€…ã©ã®ã‚ˆã†ã«ã—ã¦å•é¡Œã¨å‘ãåˆã£ã¦ã„ã‚‹ã‹ã‚’ç´¹ä»‹ã—ãŸã„ã¨æ€ã„ã¾ã™ã€‚ã‚¤ãƒ³ãƒ•ãƒ©å¯„ã‚Šã®å†…å®¹ãŒå¤šã„ãŸã‚ã€ã‚¢ãƒ—ãƒªå¯„ã‚Šã®è©±ã¯å¼Šç¤¾ç”Ÿæ²¼ã®è³‡æ–™ã‚’å¾¡è¦§ãã ã•ã„ã€‚ 1. æ§‹æˆã¨è¦æ¨¡ 1.1. æ§‹æˆ ã¾ãšæ§‹æˆã§ã™ãŒã€èªã¿æ›¸ãã¯ã™ã¹ã¦ãƒžã‚¹ã‚¿ãƒ¼ã¸è¡Œã†ã‚ˆã†ã«ã—ã¦ã„ã¾ã™ã€‚ãã®ãŸã‚ã€ã‚¹ãƒ¬ãƒ¼ãƒ–ã«ã¯å‚ç…§ã‚’å‘ã‘ãšã€ãƒ›ãƒƒãƒˆã‚¹ã‚¿ãƒ³ãƒã‚¤ã¨ã—ã¦ä½¿ã£ã¦ã„ã¾ã™ã€‚ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã«é–¢ã—ã¦ã¯2012å¹´ä¸æ—¬ã¾ã§ã¯5.0ã‚’ä½¿ã£ã¦ã¾ã—ãŸãŒã€DCç§»è»¢ã«ã‚ã‚ã›ã¦5.5ã«ã‚ã’ã¾ã—ãŸã€‚ãƒãƒƒã‚¯æ©Ÿèƒ½ã‚’ç”¨ã„ãŸã‚·ãƒ£ãƒ¼ãƒ‰æ§‹æˆã‚’ã—ã¦ã¾ã—ã¦ã€2014å¹´3æœˆç¾åœ¨6ã‚·ãƒ£ãƒ¼ãƒ‰ã«ãª
iwazer 2014/05/23
db

tuning

mysql

performance
ãƒªãƒ³ã‚¯
Ruby 2.1: Out-of-Band GC Â· computer talk by @tmm1
29 Jan 2014 Ruby 2.1's GC is better than ever, but ruby still uses a stop-the-world GC implementation. This means collections triggered during request processing will add latency to your response time. One way to mitigate this is by running GC in-between requests, i.e. "Out-of-Band". OOBGC is a popular technique, first introduced by Unicorn and later integrated into Passenger. Traditionally, these
iwazer 2014/01/31
ruby

gc

tuning

performance
ãƒªãƒ³ã‚¯
éš ã‚Œã¦ã„ãŸNode.jsã®4ãƒã‚¤ãƒˆãƒ¡ãƒ¢ãƒªãƒªãƒ¼ã‚¯ã€Walmartå•é¡Œã®è§£æ±º - ã¼ã¡ã¼ã¡æ—¥è¨˜
ã“ã®è¨˜äº‹ã¯ã€ Node.js Advent Calendar 2013 - Adventar ã®12æ—¥ç›®ã§ã™ã€‚ 1. ã‚ã‚ŠãŒã¨ã† Ben Nodeã®æƒ…å ±ã«æ™®æ®µã‚¢ãƒ³ãƒ†ãƒŠã‚’å¼µã£ã¦ã„ã‚‹äººã¯æ—¢ã«ã”å˜ã˜ã§ã—ã‚‡ã†ãŒã€Nodeã‚³ã‚¢é–‹ç™ºã®ä¸å¿ƒçš„ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ Ben Noordhuis ãŒNodeã®ã‚³ã‚¢ãƒãƒ¼ãƒ ã‹ã‚‰é›¢ã‚Œã¾ã—ãŸã€‚Node.jsã®å…¬å¼ãƒ–ãƒã‚°ã«ã€ŒBen Noordhuis's Departureã€ã¨ã—ã¦ã‚¢ãƒŠã‚¦ãƒ³ã‚¹ã•ã‚Œã¦ã„ã¾ã™ã€‚ ãªãœå½¼ãŒNodeã®é–‹ç™ºã‚’æ¢ã‚ãªã‘ã‚Œã°ãªã‚‰ãªã‹ã£ãŸã®ã‹ãã®çµŒç·¯ã‚’ã“ã“ã§è¿°ã¹ã‚‹ã“ã¨ã¯æŽ§ãˆã¾ã™ãŒã€å½¼ã®ã“ã‚Œã¾ã§ã®è²¢çŒ®ãªã—ã§ã¯ä»Šã®Nodeã¯å˜åœ¨ã—å¾—ãªã‹ã£ãŸã€ã¨è¨€ãˆã‚‹ã»ã©å½¼ã¯é‡è¦ãªå˜åœ¨ã§ã—ãŸã€‚Benã¯ã€Nodeã‚„libuvã®ã‚³ãƒ¼ãƒ‰ã®é–‹ç™ºã ã‘ã§ãªãã€github ã® issue ã®å›žç”ã‚„PRã®ãƒ¬ãƒ“ãƒ¥ãƒ¼ã€ MLã®è³ªå•ã®è¿”ç”ãªã©Nodeã‚³ãƒŸãƒ¥ãƒ‹ãƒ†ã‚£ã«ã‚‚ç²¾åŠ›çš„ã«å¯¾å¿œã—ã€åŽ»å¹´æ¥æ—¥ã—ãŸ isaac
iwazer 2013/12/13
æ˜”ã‚’æ€ã„å‡ºã™ãªã

tuning

debug
ãƒªãƒ³ã‚¯
ãªã‚ã‚‰ã‹ã«å‹•ä½œã™ã‚‹UITableViewã®ã¤ãã‚Šã‹ãŸ
çŸ¢å£è£•ä¹Ÿã§ã™ã€‚ Advent Calendar 10æ—¥ç›®ã¯iOSã®UITableViewã®è©±ã‚’ã—ã¾ã™ã€‚ ã¼ã‚„ã iOSã‚¢ãƒ—ãƒªã‚’é–‹ç™ºã—ã¦ã„ã‚‹ã¨70%ãã‚‰ã„ã®æ™‚é–“ã¯UITableViewã«è²»ã‚„ã—ã¦ã„ã‚‹æ°—ãŒã—ã¦ãã¾ã™ã€‚ UITableViewã¯éžå¸¸ã«ã‚ã‚“ã©ã†ãªã‚‚ã®ã§ã™ãŒã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒã‚·ãƒ“ã‚¢ã§ã‹ã¤ãƒ¦ãƒ¼ã‚¶ãƒ¼ã®å¿«é©ã•ã«ç›´çµã™ã‚‹ã‚‚ã®ãªã®ã§å¤§ã„ã«æ‰‹é–“ã‚’ã‹ã‘ã‚‹ä¾¡å€¤ãŒã‚ã‚Šã¾ã™ã€‚ ã“ã®è¨˜äº‹ã§ã¯ã‚¬ã‚¯ã‚¬ã‚¯å‡¦ç†è½ã¡ã™ã‚‹UITableViewã‚’ä¾‹ã¨ã—ã¦æ”¹å–„ã—ã¦ã„ããªãŒã‚‰å¿«é©ãªUITableViewã®ã¤ãã‚Šã‹ãŸã‚’è§£èª¬ã—ã¾ã™ã€‚ ç›®çš„ ä»¥ä¸‹ã®ã‚±ãƒ¼ã‚¹ã‚¹ã‚¿ãƒ‡ã‚£ã§ã¯æ¬¡ã®ç›®çš„ã§ã‚³ãƒ¼ãƒ‰ã‚’æ”¹å–„ã—ã¦ã„ãã¾ã™ ãªã‚ã‚‰ã‹ã«å‹•ãã‚ˆã†ã«ã™ã‚‹ ã“ã“ã§ã®ãƒã‚¤ãƒ³ãƒˆã¯å®Ÿéš›é€Ÿããªãã¦ã‚‚ãƒ¦ãƒ¼ã‚¶ãŒå¿«é©ã«æ„Ÿã˜ã‚Œã°OKã§ã‚ã‚‹ã€ã¨ã„ã†ã“ã¨ã§ã™ã€‚å‡¦ç†é€Ÿåº¦ãŒé«˜é€Ÿã§ã‚ã‚‹å¿…è¦ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ æˆ¦ç•¥ UITableViewã§ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹å•é¡Œã¯æ¬¡ã®2ç‚¹ã§ã‚ã‚‹ã“ã¨ãŒå¤šã„ã§ã™
iwazer 2013/12/11
ios

sdk

tuning

uitableview

objc
ãƒªãƒ³ã‚¯
10 Amazing Tools For Developers and Designers To Format and Optimize Their CSS Codes
iwazer 2013/11/12
css

design

lint

tuning
ãƒªãƒ³ã‚¯
GitHub - path/FastImageCache: iOS library for quickly displaying images while scrolling
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iwazer 2013/10/24
â€œiOS library for quickly displaying images while scrollingâ€

ios

sdk

tuning

photo
ãƒªãƒ³ã‚¯
Netty 4 at Twitter: Reduced GC Overhead
At Twitter, Netty (@netty_project) is used in core places requiring networking functionality. For example: Finagle is our protocol agnostic RPC system whose transport layer is built on top of Netty, and it is used to implement most services internally like Search TFE (Twitter Front End) is our proprietary spoon-feeding reverse proxy which serves most of public-facing HTTP and SPDY traffic using Ne
iwazer 2013/10/18
java

tuning

gc
ãƒªãƒ³ã‚¯
25 iOS App Performance Tips & Tricks
This article has been archived and is no longer being updated. It may not work with the most recent OS versions.
iwazer 2013/05/23
tuning

ios

app
ãƒªãƒ³ã‚¯
rvm install patched ruby for faster rails startup | Astrails - Creating Awesome Web, Mobile, and Embedded Applications with Node.js, React, Ruby on Rails, Elixir and machine/deep learning
iwazer 2013/05/20
rvm

ruby

tuning

falcon

gc
ãƒªãƒ³ã‚¯
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