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performanceã«é–¢ã™ã‚‹kuchitamaã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (11)

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JVMã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’é‹ç”¨ã™ã‚‹éš›ã®ãƒ¡ã‚¸ãƒ£ãƒ¼ã©ã“ã‚ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆãƒ¡ãƒ¢ - yoskhdiaâ€™s diary
JVMã«ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°é …ç›®ã¯å¤šã€…ã‚ã‚Œã©ã€ãƒ—ãƒãƒ€ã‚¯ã‚·ãƒ§ãƒ³ã§é‹ç”¨ã™ã‚‹éš›ã«äºˆã‚ãŠã•ãˆã¦ãŠããŸã„é …ç›®ã‚’ã¾ã¨ã‚ã¦ã¿ã‚‹ã‚¨ãƒ³ãƒˆãƒªã§ã™ã€‚*1 å‹¿è«–ã€OSã‚‚JVMã‚‚ãƒ‡ãƒ•ã‚©ãƒ«ãƒˆã§ã‚ã‚‹ç¨‹åº¦ã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã¯ç™ºæ®ã§ãã€è¨ˆæ¸¬ã‚’ä¼´ã‚ãªã„ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã¯æ‚ªæ‰‹ã§ã‚ã‚‹ã“ã¨ã¯ã‚ˆãçŸ¥ã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ ã—ã‹ã—ã€è¨å®šã—ã¦ãŠã‹ãªã„ã¨ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«ãã®ã¾ã¾å½±éŸ¿ã™ã‚‹ã¨åˆ†ã‹ã‚‹ã‚‚ã®ã‚’èª¿ã¹ãªã„ã®ã¯è£¸ã§æˆ¦å ´ã«èµ´ãã‚ˆã†ãªã‚‚ã®ã§ã™ã€‚*2 ã©ã‚“ãªé …ç›®ã‚’ã©ã†å¤‰æ›´ã™ã‚Œã°è‰¯ã„ã®ã‹çŸ¥ã£ã¦ã„ã‚‹ã“ã¨ã¯é‡è¦ãªæ¦å™¨ãªã®ã§ã™ã€‚ ãªãœèª¿ã¹ã‚‹ã®ã‹ ä»Šå›žã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒã‚¤ãƒ³ãƒˆã‚’èª¿ã¹ã‚‹ã«ã‚ãŸã£ã¦ã€ç§ã®ãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã¯ã©ã“ã«ã‚ã‚‹ã®ã‹ã‚’è€ƒãˆã‚‹ã¨ã€ä»¥ä¸‹ã®è¦ä»¶ã‚’æº€ãŸã—ãŸã„ã¨ã„ã†ã“ã¨ãŒã‚ã’ã‚‰ã‚Œã¾ã™ã€‚ ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã—ã¦æ±‚ã‚ã‚‰ã‚Œã‚‹å“è³ªæ°´æº–ã¨ã—ã¦å‹•ä½œã™ã‚‹ â†’ æ€§èƒ½ç›®æ¨™ ç•°å¸¸æ™‚ã«äº‹è±¡ã‚’è¿½ã†ã“ã¨ãŒã§ãã‚‹ ã“ã“ã§ã„ã†å“è³ªæ°´æº–ãƒ»ç•°å¸¸ã¨ã¯ã€ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ãŒæ˜Žã‚‰ã‹ã«ä½Žã„ã€ã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒã‚¯ãƒ©ãƒƒã‚·ãƒ¥ã™
kuchitama 2017/11/07
jvm

java

performance
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CPUä½¿ç”¨çŽ‡ã¯é–“é•ã£ã¦ã„ã‚‹ | Yakst
Netflixã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã§ã‚ã‚‹ç†è€…ã‹ã‚‰ã®ã€topã‚³ãƒžãƒ³ãƒ‰ãªã©ã§è¡¨ç¤ºã•ã‚Œã‚‹CPUä½¿ç”¨çŽ‡(%CPU)ã¯ã€ã„ã¾ã‚„æœ¬å½“ã®ä½¿ç”¨çŽ‡ã‚’è¡¨ã—ã¦ãŠã‚‰ãšã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãªã©ã®ãŸã‚ã®æŒ‡æ¨™ã¨ã—ã¦ä½¿ãˆãªã„ã¨ã„ã†æŒ‡æ‘˜ã€‚ãªãœãã†ãªã£ã¦ã—ã¾ã£ãŸã®ã‹ã€ä½•ã‚’è¦‹ã‚Œã°æœ¬å½“ã®CPUä½¿ç”¨çŽ‡ãŒã‚ã‹ã‚‹ã®ã‹ã‚’ã‚ã‹ã‚Šã‚„ã™ãè§£èª¬ã—ãŸè¨˜äº‹ã€‚ ç§ãŸã¡ã¿ã‚“ãªãŒCPUä½¿ç”¨çŽ‡ã¨ã—ã¦ä½¿ã£ã¦ã„ã‚‹æŒ‡æ¨™ã¯éžå¸¸ã«èª¤è§£ã‚’æ‹›ãã‚‚ã®ã§ã€ã“ã®çŠ¶æ³ã¯æ¯Žå¹´æ‚ªåŒ–ã—ã¦ã„ã¾ã™ã€‚CPUä½¿ç”¨çŽ‡ã¨ã¯ä½•ã§ã—ã‚‡ã†ã‹ï¼Ÿãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ãŒã©ã®ãã‚‰ã„å¿™ã—ã„ã‹ï¼Ÿé•ã„ã¾ã™ã€‚CPUä½¿ç”¨çŽ‡ãŒè¡¨ã—ã¦ã„ã‚‹ã®ã¯ãã‚Œã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ç§ãŒè©±ã—ã¦ã„ã‚‹ã®ã¯ã€ã‚ã¡ã“ã¡ã§ã€ã‚ã‚‰ã‚†ã‚‹äººãŸã¡ã«ã€ã‚ã‚‰ã‚†ã‚‹ç›£è¦–è£½å“ã§ã€ã‚ã‚‹ã„ã¯top(1)ã§ã‚‚ä½¿ã‚ã‚Œã¦ã„ã‚‹ã€"%CPU"ã¨ã„ã†æŒ‡æ¨™ã®ã“ã¨ã§ã™ã€‚ ã‚ãªãŸã®è€ƒãˆã¦ã„ã‚‹ã§ã‚ã‚ã†CPUä½¿ç”¨çŽ‡90% : å®Ÿéš› : "stalled"(è¨³æ³¨ : ä»¥ä¸‹ã‚¹ãƒˆãƒ¼ãƒ«ã¨è¨€ã†)ã¨ã¯ã€ãƒ—ãƒã‚»ãƒƒã‚µãƒ¼ãŒ
kuchitama 2017/06/17
CPU

linux

performance
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AWSã®ã‚ªãƒ¼ãƒˆã‚¹ã‚±ãƒ¼ãƒ«ã¨ãªã‹ã‚ˆãä»˜ãåˆã†
YAP(achimon)C::Asia Hachioji 2016 mid
kuchitama 2016/07/03
aws

performance

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è² è·è©¦é¨“ã‚’ã—ã‚ˆã†ï¼ / ServerStressTest
GameServerDevelopers Vol.1ã®ç™»å£‡è³‡æ–™ã§ã™ã€‚ https://gsdevelopers.doorkeeper.jp/
kuchitama 2016/05/29
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performance
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kuchitama 2016/03/03
ã‚¤ãƒ³ãƒ•ãƒ©

go

Scala

é–‹ç™º

DevOps

performance

infrastructure
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ã‚¦ã‚§ãƒ–ã‚’é€Ÿãã™ã‚‹ãŸã‚ã«DeNAãŒã‚„ã£ã¦ã„ã‚‹ã“ã¨ - HTTP/2ã¨ã€ã•ã‚‰ã«ãã®å…ˆ
1. Copyright (C) 2016 DeNA Co.,Ltd. All Rights Reserved. ã‚¦ã‚§ãƒ–ã‚’é€Ÿãã™ã‚‹ãŸã‚ã« DeNAãŒã‚„ã£ã¦ã„ã‚‹ã“ã¨ HTTP/2ã¨ã€ã•ã‚‰ã«ãã®å…ˆ DeNA Co., Ltd. Kazuho Oku 1
kuchitama 2016/02/05
DeNA

ã‚¦ã‚§ãƒ–

http2

H2O

performance
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Java Memory Architecture Cheat Sheet
The diagram below is the Java Memory Model for the Heap as well as the PermGen for any Java Application running in the Java Virtual Machine (JVM). The ratios are also provided to get a fair understanding of how the distribution of allowed memory is done across each of the generation types. All of the info is completely applicable up to Java 1.7 (inclusive). This diagram is also known as the 'Manag
kuchitama 2015/11/06
Java

architecture

garbage collection

cheatsheet

JVM

performance

ã‚µãƒ¼ãƒ

jvm
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Settings JDBC - 2.9.x
You are viewing the documentation for the 2.9.x release series. The latest stable release series is 3.0.x. Search Home Working with Play Common topics Configuration Â§Configuring the JDBC pool The Play JDBC datasource is managed by HikariCP. Â§Special URLs Play supports special url format for both MySQL and PostgreSQL: # To configure MySQL db.default.url="mysql://user:password@localhost/database" #
kuchitama 2015/11/02
playframework

performance
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Javaã‚¢ãƒ—ãƒªãŒæš´èµ°ã—ã¦CPUã®è² è·ãŒã‚ãŒã£ãŸæ™‚ã«ã‚„ã£ãŸã“ã¨ - kitaru's diary
æ¤œè¨¼ç”¨APã‚µãƒ¼ãƒ(Tomcat)ã®ãƒãƒ¼ãƒ‰ã‚¢ãƒ™ãƒ¬ãƒ¼ã‚¸ãŒä¸ŠãŒã‚Šã£ã±ãªã—ã«ãªã£ã¦ä¸€å‘ã«ä¸‹ãŒã‚‰ãªã„çŠ¶æ…‹ã«é™¥ã£ãŸã®ã§ãã®æ™‚ã«ã‚„ã£ãŸã“ã¨ã€‚ ã–ã£ãã‚Šã®æµã‚Œ CPUã«è² è·ã‹ã‘ã¦ã‚‹ãƒ—ãƒã‚»ã‚¹ã®ç¢ºèª ã‚¹ãƒ¬ãƒƒãƒ‰ãƒ€ãƒ³ãƒ—ã®æŽ¡å– CPUã«è² è·ã‹ã‘ã¦ã‚‹ã‚¹ãƒ¬ãƒƒãƒ‰ã®ç‰¹å®š ã‚¹ã‚¿ãƒƒã‚¯ãƒˆãƒ¬ãƒ¼ã‚¹èªã‚“ã§åˆ†æžã™ã‚‹ top ã‚³ãƒžãƒ³ãƒ‰ã§å•é¡Œã®ãƒ—ãƒã‚»ã‚¹ç‰¹å®š â†“â†“ã“ã‚“ãªæ„Ÿã˜ã ã£ãŸâ†“â†“æ˜Žã‚‰ã‹ã«Javaã®Webã‚¢ãƒ—ãƒªãŒåŽŸå› (å¸¸ã«85%ä»¥ä¸ŠCPU é£Ÿã£ã¦ã‚‹çŠ¶æ…‹) $ top top - 18:27:24 up 285 days, 3:05, 3 users, load average: 5.33, 5.36, 4.93 Tasks: 70 total, 1 running, 69 sleeping, 0 stopped, 0 zombie Cpu(s): 10.1%us, 0.9%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi,
kuchitama 2015/11/02
Java

CPU

ãƒ€ãƒ³ãƒ—

dump

THREAD

ã‚¹ãƒ¬ãƒƒãƒ‰

performance
ãƒªãƒ³ã‚¯
Java8ã®HotSpotVMã‹ã‚‰Permanenté ˜åŸŸãŒæ¶ˆãˆãŸç†ç”±ã¨ãã®å½±éŸ¿ | ã‚®ãƒ¼ã‚¯ã‚’ç›®æŒ‡ã—ã¦
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kuchitama 2015/10/07
Java

java8

jvm

gc

performance

metaspace
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Linuxã®æ€§èƒ½é–¢é€£ã®ã¾ã¨ã‚ - ITãƒ¡ãƒ¢
æ€§èƒ½æ¸¬å®šã‚³ãƒžãƒ³ãƒ‰ sar ï¼šã‚·ã‚¹ãƒ†ãƒ ç¨¼å‹•çŠ¶æ³ mpstatï¼šCPUç¨¼åƒçŠ¶æ³ vmstatï¼šä»®æƒ³ãƒ¡ãƒ¢ãƒªç¨¼åƒçŠ¶æ³ free ï¼šãƒ¡ãƒ¢ãƒªæƒ…å ± iostatï¼šãƒãƒ¼ãƒ‰ãƒ‡ã‚£ã‚¹ã‚¯,CPUä½¿ç”¨çŠ¶æ³ ps ï¼šãƒ—ãƒã‚»ã‚¹æƒ…å ± top ï¼šãƒ—ãƒã‚»ã‚¹æƒ…å ± ç›®å®‰ CPU CPUä½¿ç”¨çŽ‡ï¼š90%ä»¥ä¸Š CPUå¾…ã¡ãƒ—ãƒã‚»ã‚¹æ•°ï¼š2ã‚ˆã‚Šå¤§ãã„(1CPUã‚ãŸã‚Š) ãƒ¡ãƒ¢ãƒª ãƒ¡ãƒ¢ãƒªä½¿ç”¨é‡ï¼šãƒšãƒ¼ã‚¸ãƒ³ã‚°ã®ç™ºç”Ÿå›žæ•° ãƒ‡ã‚£ã‚¹ã‚¯ ãƒ‡ã‚£ã‚¹ã‚¯ä½¿ç”¨çŽ‡ï¼š80%ä»¥ä¸Š ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ä½¿ç”¨çŽ‡ï¼š80%ä»¥ä¸Š ãƒ‘ã‚±ãƒƒãƒˆè¡çªå›žæ•°ï¼šé€ä¿¡ãƒ‘ã‚±ãƒƒãƒˆã®10%ä»¥ä¸Š sarã‚³ãƒžãƒ³ãƒ‰ # sar [ã‚ªãƒ—ã‚·ãƒ§ãƒ³] [-o ãƒ•ã‚¡ã‚¤ãƒ«å] å–å¾—é–“éš” å–å¾—å›žæ•° -uï¼šCPUï¼šCPUä½¿ç”¨çŠ¶æ³ -qï¼šCPUï¼šãƒ—ãƒã‚»ã‚¹ã‚ãƒ¥ãƒ¼ã€ã‚·ã‚¹ãƒ†ãƒ ç¨¼å‹•è² è· -rï¼šãƒ¡ãƒ¢ãƒªï¼šãƒ¡ãƒ¢ãƒª,ã‚¹ãƒ¯ãƒƒãƒ—é ˜åŸŸä½¿ç”¨çŠ¶æ³ -Rï¼šãƒ¡ãƒ¢ãƒªï¼šãƒ¡ãƒ¢ãƒªå‹•ä½œçŠ¶æ³ -Bï¼šãƒ¡ãƒ¢ãƒªï¼šãƒšãƒ¼ã‚¸ãƒ³ã‚°çµ±è¨ˆå€¤ -Wï¼šãƒ¡ãƒ¢ãƒªï¼šã‚¹ãƒ¯ãƒƒãƒ”ãƒ³ã‚°çµ±è¨ˆå€¤ -b
kuchitama 2015/06/24
Linux

ã‚·ã‚¹ãƒ†ãƒ

ã‚³ãƒžãƒ³ãƒ‰

æ€§èƒ½æ¸¬å®š

æ€§èƒ½

performance
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