[B! JVM] kakku22ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

kakku22 id:kakku22

JVMã«é–¢ã™ã‚‹kakku22ã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (19)

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æœ€å¼·ã®JVMãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãƒ»ãƒ„ãƒ¼ãƒ«: GCãƒã‚°ã‚’å¯è¦–åŒ–ã™ã‚‹GCViewerã¨ãƒªãƒ¢ãƒ¼ãƒˆæŽ¥ç¶šã§ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒªãƒ³ã‚°å¯èƒ½ãªVisualVM
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kakku22 2014/12/24
java

JVM

GC

ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°
ãƒªãƒ³ã‚¯
ãƒˆãƒ©ãƒ–ãƒ«ã«å‚™ãˆã‚‹JVMã‚ªãƒ—ã‚·ãƒ§ãƒ³ - n-agetsumaã®æ—¥è¨˜
ä»¥å‰ã®è¨˜äº‹ã§ãƒˆãƒ©ãƒ–ãƒ«ãŒèµ·ããŸå¾Œã®åˆå‹•å¯¾å¿œã‚’æ›¸ã„ã¦ã¿ãŸãŒã€ã„ã–ãƒˆãƒ©ãƒ–ãƒ«ã«éé‡ã™ã‚‹ã¨ã€ã¾ãšå†èµ·å‹•ã—ã¦ã‹ã‚‰ã©ã†ã™ã‚‹ã‹è€ƒãˆã‚‹ã‚±ãƒ¼ã‚¹ãŒå¤šã„ã¨æ„Ÿã˜ã¦ã„ã‚‹ã€‚ã—ã‹ã—ä½•ã‚‚æƒ…å ±ãŒãªã„ã¨ã€Žæƒ…å ±ãŒãªã„/å†ç¾æ–¹æ³•ãŒä¸æ˜Žã€ãªã©ã®ç†ç”±ã‹ã‚‰ãã®ã¾ã¾ãŠè”µå…¥ã‚Šã«ãªã£ã¦ã—ã¾ã†ã€‚ä»Šå›žã¯ãƒˆãƒ©ãƒ–ãƒ«ã«äº‹å‰ã«å‚™ãˆã‚‹ãŸã‚ã«ã€åœ°å‘³ã ã‘ã©å¤§åˆ‡ãªJavaVMã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’ã¾ã¨ã‚ã¦ã¿ã‚‹ã€‚ GCãƒã‚°ã®å‡ºåŠ›ã¨ãƒãƒ¼ãƒ†ãƒ¼ã‚·ãƒ§ãƒ³ OutOfMemoryErrorç™ºç”Ÿæ™‚ã®ãƒ’ãƒ¼ãƒ—ãƒ€ãƒ³ãƒ—è‡ªå‹•å‡ºåŠ›ã¨å‡ºåŠ›ãƒ‘ã‚¹è¨å®š JavaVMã‚¯ãƒ©ãƒƒã‚·ãƒ¥ãƒã‚°ã®å‡ºåŠ›ãƒ‘ã‚¹è¨å®š JVMã‚ªãƒ—ã‚·ãƒ§ãƒ³ã®è¨å®š (OpenJDK/OracleJDK) JavaVMã«ã¯GCãŠã‚ˆã³ãƒ’ãƒ¼ãƒ—ãƒ¡ãƒ¢ãƒªã®çŠ¶æ…‹ã‚’ãƒã‚®ãƒ³ã‚°ã™ã‚‹ä»•çµ„ã¿ã‚„ã€OufOfMemoryErroræ™‚ã«ãƒ’ãƒ¼ãƒ—ãƒ€ãƒ³ãƒ—ã‚’è‡ªå‹•çš„ã«å‡ºåŠ›ã™ã‚‹ã‚ˆã†ãªéšœå®³ã«å‚™ãˆã¦è‡ªå‹•çš„ã«æƒ…å ±ã‚’å‡ºåŠ›ã™ã‚‹æ©Ÿèƒ½ãŒã‚ã‚‹ã€‚ãŠã™ã™ã‚ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³*1ã¯ä»¥ä¸‹ã®é€šã‚Šã€‚ java -Xms?g -
kakku22 2014/05/25
jvm

heapdump

gc

java
ãƒªãƒ³ã‚¯
Javaãƒˆãƒ©ãƒ–ãƒ«ã«å‚™ãˆã‚ˆã† #jjug_ccc #ccc_h2
1. ã€JJUG CCC 2014 Spring H-Ââ€2ã€‘ Javaãƒˆãƒ©ãƒ–ãƒ«ã«å‚™ãˆã‚ˆã† æ—¥æœ¬Javaãƒ¦ãƒ¼ã‚¶ã‚°ãƒ«ãƒ¼ãƒ— ä¸Šå¦» å®œäºº (ã‚ã’ã¤ã¾ ã®ã‚Šã¨) ã¯ã¦ãªãƒ–ãƒã‚° : n-agetsuma.hatena blog.com 2. è‡ªå·±ç´¹ä»‹ ä¸Šå¦» å®œäºº (ã‚ã’ã¤ã¾ ã®ã‚Šã¨) nï®â€¯ é›»è©±ã®è£å´ã‚’ä½œã£ã¦ã„ã‚‹ä¼šç¤¾ã§åƒã„ã¦ã„ã¾ã™ nï®â€¯ Java/APã‚µãƒ¼ãƒã®ç¤¾å†…æŠ€è¡“ã‚µãƒãƒ¼ãƒˆã€ãƒˆãƒ©ãƒ–ãƒ«è§£æž nï®â€¯ Blog ã€Žè¦‹ç¿’ã„ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°æ—¥è¨˜ã€ ã€JJUG CCC 2014 Spring H-Ââ€2ã€‘
kakku22 2014/05/23
java

jvm
ãƒªãƒ³ã‚¯
JVM Operation Casual Talksã«å‚åŠ ã—ã¾ã—ãŸ #jvmcasual
JVM Operation Casual Talksã«å‚åŠ ã—ã¾ã—ãŸã€‚ ã‚ã‚“ã¾ã‚Šã€é‹ç”¨ã¨ã‹ã‚„ã£ã¦ãªã„ã®ã§ã€ã¤ã„ã¦ã„ã‘ã‚‹ã‹ä¸å®‰ã§ã™ãŒã€æ¥½ã—ãã†ã ã£ãŸã®ã§ã€‚ æ‡‡è¦ªä¼šã¯äºˆå®šã•ã‚Œã¦ãªã„ã‚‰ã—ã„ã€‚ @stanaka 15åˆ†ã§ã‚ã‹ã‚‹JVMã®ãƒ¡ãƒ¢ãƒªç®¡ç† ã‚¹ãƒ©ã‚¤ãƒ‰ï¼šhttps://speakerdeck.com/stanaka/understanding-memory-management-of-javavm-in-15-minutes JVMã®åŸºç¤ŽçŸ¥è˜ æŸç ”ç©¶æ‰€ã§ã€‚ã€‚ã€‚ Elasticsearchã€Solrã®åå‰ãŒï¼ JVMå›°ã‚Šã©ã“ã‚ã€‚ãƒãƒƒãƒˆã®æƒ…å ±ãŒå¤ã„ã®ãŒå¤šã„ã¨ã‹ã€‚ ä½¿ã„ã“ãªã™ã«ã¯ãã¡ã‚“ã¨çŸ¥è˜ãŒå¿…è¦ã€‚ Memory Model å›°ã£ãŸã‚‰Java8ã«ã€‚ã€‚ã€‚ Heapã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãŒé‡è¦ Heapã®æ§‹æˆã‚„GCå‡¦ç†ã®èª¬æ˜Ž CMSã§ã‚‚ã™ã¹ã¦ä¸¦åˆ—ã§ã¯ãªã„ OlgGenãŒãƒ•ãƒ©ã‚°ãƒ¡ãƒ³ãƒˆã—ã¦ç¢ºä¿ãŒé…ããªã£ã¦ã„ã G1GC
kakku22 2014/04/14
jvm

java
ãƒªãƒ³ã‚¯
JVMã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚° - ITã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã¨ã—ã¦ç”Ÿãã‚‹
å‰å›žã€JVMã¨GCã®ã—ãã¿ - IT ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã¨ã—ã¦ç”Ÿãã‚‹ã§JVMã¨GCã®ã—ãã¿ã«ã¤ã„ã¦æ›¸ã„ãŸã€‚ ä»Šå›žã¯ãã®ç¶šãã¨ã„ã†ã“ã¨ã§JVMã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã«ã¤ã„ã¦æ›¸ããŸã„ã¨æ€ã†ã€‚ JVMãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã£ã¦ -Xms ãƒ»ãƒ»ãƒ» ãƒ’ãƒ¼ãƒ—å…¨ä½“ï¼ˆNewé ˜åŸŸï¼‹Oldé ˜åŸŸï¼‰ã®åˆæœŸå€¤ -Xmx ãƒ»ãƒ»ãƒ» ãƒ’ãƒ¼ãƒ—å…¨ä½“ï¼ˆNewé ˜åŸŸï¼‹Oldé ˜åŸŸï¼‰ã®æœ€å¤§å€¤ ãã‚‰ã„ã—ã‹è©±é¡Œã«ä¸ŠãŒã‚‰ãªã„ã—æ„è˜ã—ãªã„ã“ã¨ãŒå¤šã„ï¼ˆæ°—ãŒã™ã‚‹ï¼‰ã€‚ ã§ã‚‚ãƒ›ãƒ³ãƒˆã¯ã“ã‚Œã ã‘ã§ã¯ãƒ€ãƒ¡ã§ã€å‰å›žã®ã‚ˆã†ã«Permanenté ˜åŸŸã€Newé ˜åŸŸã€Oldé ˜åŸŸã‚’æ„è˜ã—ãŸãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ãŒå¿…è¦ã«ãªã‚‹ã€‚ VMãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã‚’è€ƒãˆã‚‹ãã®å‰ã«ãƒ»ãƒ»ãƒ»ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã®è©±ã‚’ã™ã‚‹å‰ã«ã¾ãšVMã®èµ·å‹•ãƒ¢ãƒ¼ãƒ‰ã«ã¤ã„ã¦è©±ã—ãŸã„ã¨æ€ã†ã€‚ VMã«ã¯å¤§ããä»¥ä¸‹ï¼’ã¤ã®èµ·å‹•ãƒ¢ãƒ¼ãƒ‰ãŒã‚ã‚Šã€ãã‚Œãžã‚Œä»¥ä¸‹ã®ã‚ˆã†ãªç‰¹å¾´ã‚’æŒã¤ã€‚ â—†ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆVMãƒ¢ãƒ¼ãƒ‰ èµ·å‹•æ™‚é–“ã‚’çŸç¸®ã—ã€ãƒ¡ãƒ¢ãƒªã‚µã‚¤ã‚ºã‚’ç¸®å°ã™ã‚‹ã‚ˆã†ã«èª¿æ•´ã•ã‚Œã¦ã„ã‚‹ã€‚ VMèµ·å‹•æ™‚
kakku22 2013/08/11
java

jvm
ãƒªãƒ³ã‚¯
JVMã¨GCã®ã—ãã¿ - ITã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã¨ã—ã¦ç”Ÿãã‚‹
å…ˆæ—¥è·å ´ã§JVMã®è©±ã‚’ã—ã¦ãŸã€‚ ã¡ã‚‡ã†ã©ã„ã„æ©Ÿä¼šã ã‹ã‚‰ã¡ã‚‡ã£ã¨ã¾ã¨ã‚ãŸã„ã¨æ€ã†ã€‚ JVMã®æ§‹æˆã¾ãšã¯JVMã®æ§‹æˆã«ã¤ã„ã¦ã€‚JVMã«ã¯ï¼“ã¤ã®é ˜åŸŸãŒå˜åœ¨ã™ã‚‹ã€‚ Permanenté ˜åŸŸï¼ˆéžãƒ’ãƒ¼ãƒ—é ˜åŸŸï¼‰ Newé ˜åŸŸï¼ˆãƒ’ãƒ¼ãƒ—é ˜åŸŸï¼‰ Oldé ˜åŸŸï¼ˆãƒ’ãƒ¼ãƒ—é ˜åŸŸï¼‰ Permanenté ˜åŸŸã«ã¯JVMã«ãƒãƒ¼ãƒ‰ã•ã‚ŒãŸã‚¯ãƒ©ã‚¹ã‚„ãƒ¡ã‚½ãƒƒãƒ‰ã®æƒ…å ±ã€Newé ˜åŸŸã«ã¯ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹åŒ–ã•ã‚ŒãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®æƒ…å ±ã€Oldé ˜åŸŸã«ã¯å¯¿å‘½ã®é•·ã„ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®æƒ…å ±ãŒç®¡ç†ã•ã‚Œã‚‹ã€‚ï¼ˆã€Œå¯¿å‘½ã®é•·ã„ã€ã«ã¤ã„ã¦ã¯å¾Œè¿°ã®Scavenge GCã‚’å‚ç…§ã€‚ï¼‰ Permanenté ˜åŸŸã¯éžãƒ’ãƒ¼ãƒ—é ˜åŸŸã€Newé ˜åŸŸã¨Oldé ˜åŸŸã¯ãƒ’ãƒ¼ãƒ—é ˜åŸŸã¨ãªã‚‹ã€‚ éžãƒ’ãƒ¼ãƒ—é ˜åŸŸã«ã¯åŸºæœ¬çš„ã«GCã¯èµ°ã‚‰ãšã€JVMèµ·å‹•æ™‚ã«é™çš„ãªæƒ…å ±ãŒç®¡ç†ã•ã‚Œã‚‹ã€‚ï¼ˆâ€»ï¼‰ ä¸€æ–¹ã€ãƒ’ãƒ¼ãƒ—é ˜åŸŸã¯ã‚¤ãƒ³ã‚¹ã‚¿ãƒ³ã‚¹åŒ–ã•ã‚ŒãŸã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆæƒ…å ±ã¨ã„ã£ãŸå‹•çš„ãªæƒ…å ±ãŒç®¡ç†ã•ã‚Œã€GCå¯¾è±¡ã¨ãªã‚‹ã€‚ â€»ãƒ¦ãƒ¼ã‚¶å®šç¾©ã®ã‚¯ãƒ©ã‚¹ãƒãƒ¼ãƒ€ãƒ¼ãŒå˜åœ¨ã™ã‚‹
kakku22 2013/08/11
java

jvm
ãƒªãƒ³ã‚¯
http://msugai.fc2web.com/java/perform/garbage.html
kakku22 2013/05/17
java

jvm

gc
ãƒªãƒ³ã‚¯
Javaã§ãƒ’ãƒ¼ãƒ—é ˜åŸŸã‚’ä½™ã‚‰ã›ãŸã¾ã¾OutOfMemoryErrorã‚’å‡ºã™æ–¹æ³• - è¥¿å°¾æ³°å’Œã®ã¯ã¦ãªãƒ€ã‚¤ã‚¢ãƒªãƒ¼
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kakku22 2013/04/12
ãƒ’ãƒ¼ãƒ—é ˜åŸŸã¨ãƒ‘ãƒ¼ãƒžãƒãƒ³ãƒˆé ˜åŸŸ

JVM

Java

OutOfMemoryError
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IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
kakku22 2012/09/20
Java

JVM

ibm

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IBM Developer
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
kakku22 2012/09/20
Java

JVM

ibm

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Memory Analyzer (MAT) | The Eclipse Foundation
Memory Analyzer (MAT) The Eclipse Memory Analyzer is a fast and feature-rich Java heap analyzer that helps you find memory leaks and reduce memory consumption. Use the Memory Analyzer to analyze productive heap dumps with hundreds of millions of objects, quickly calculate the retained sizes of objects, see who is preventing the Garbage Collector from collecting objects, run a report to automatical
kakku22 2011/08/13
http://d.hatena.ne.jp/kakku22/20110910/1315646914

Java

JVM

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JavaCore

Heapdump
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developerWorks : Javaâ„¢ technology
IBM developer kits Develop and test Javaâ„¢ Platform Standard Edition applications with the IBM Software Development Kit. Download IBM packages, access Java resources, and collaborate here with our developers. Downloads Downloads of IBM Developer Kits and Runtime Environments for IBM Power Systemsâ„¢ , IntelÂ® and IBM z Systemsâ„¢ products that require Java functionality.
kakku22 2010/12/20
Diagnostics Guide

ibm

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Java

JVM
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En YÃ¼ksek Kur Paykasa Bozdurma
IBM TechXchange Community Join the Community and get 30% off the TechXchange Conference. Join / Log in Where is my content? If youâ€™re looking for developerWorks content or a Support forum and ended up here, don't panic! You are in the right place. The content you're looking for. This page will help you find the content you are looking for, get answers to your questions, and find a new community to
kakku22 2010/12/15
JavaCoreè§£æžãƒ„ãƒ¼ãƒ«

ibm

Tool

Java

JVM
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IBM Developer
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
kakku22 2010/10/02
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kakku22 2010/09/25
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IBM Developer
IBM Developer is your one-stop location for getting hands-on training and learning in-demand skills on relevant techno logies such as generative AI, data science, AI, and open source.
kakku22 2010/07/17
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Site Cooler NZ | Points to Note When Shopping for a Washing Machine
Points to Note When Shopping for a Washing Machine There are different washing machines brands in New Zealand. When shopping, therefore, you need to ensure that first, you get a quality machine; a machine that will last through many years without breaking down. You check product warranties and reviews when shopping to ensure a machine is a good quality. The material of the drum can be enamel, plas
kakku22 2010/02/24
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kakku22 2008/11/13
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