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TOMCATæ®ºå®³äº‹ä»¶ - Qiita
OOMKillerã®æ®ºæ„ é¡§å®¢EC2ã®TomcatãŒã‚¢ã‚¯ã‚»ã‚¹ã®ç„¡ã„æ—©æœã«ã‚‚ã‹ã‹ã‚ã‚‰ãšOOMKillerã«çªç„¶æ®ºã•ã‚Œã¦ã—ã¾ã£ãŸã®ã§ã€èª¿æŸ»ã—ãŸé¡›æœ«ã‚’ãŸã¶ã‚“åŒã˜ã‚ˆã†ãªå•é¡Œã«ç›´é¢ã•ã‚Œã¦ã„ã‚‹æ–¹ã‚‚ãŠã‚‰ã‚Œã‚‹ã‹ã¨æ€ã„ã¾ã™ã®ã§å‚™å¿˜éŒ²ã¨ã—ã¦è¨˜è¼‰ã—ã¾ã™ã€‚ Javaãƒ’ãƒ¼ãƒ—ã®ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã«ã‚‚å¤šå°‘å½¹ç«‹ã¤ã‹ã¨æ€ã„ã¾ã™ã€‚ ï¼ˆã“ã®è¨˜äº‹ã¯Java8ãŒå¯¾è±¡ã¨ãªã‚Šã¾ã™ã€‚ï¼‰ OOMKillerã¨ã¯Out of Memoryæ™‚ã«ã€ã‚µãƒ¼ãƒå…¨ä½“ã‚’å®ˆã‚‹ãŸã‚ã«ãƒ¡ãƒ¢ãƒªãƒ¼ã‚’æ¶ˆè²»ã—ã¦ã„ã‚‹ãƒ—ãƒã‚»ã‚¹ã‚’åœæ¢ã™ã‚‹Linuxã®æ¨™æº–æ©Ÿèƒ½ã§ã™ã€‚ ãã®OOMKillerã«ãªã‚“ã¨TomcatãŒçªç„¶æ®ºå®³ã•ã‚Œã¦ã—ã¾ã„ã¾ã—ãŸã€‚ å•ç”ç„¡ç”¨ã®è¾»æ–¬ã‚ŠçŠ¶æ…‹ã§ã™ã€‚ æ—©æœã§ã™ã®ã§ã‚¢ã‚¯ã‚»ã‚¹ãƒã‚°ã«ã¯ä½•ã‚‚è¨˜éŒ²ã•ã‚Œã¦ãŠã‚‰ãšã€catalina.outã«ã¯ OpenJDK 64-Bit Server VM warning: Setting LargePageSizeInBytes has no
asa_ca3 2020/01/09
tomcat

memory

java

Qiita

jvm

qiita.com
ãƒªãƒ³ã‚¯
JVMä¸Šã§å‹•ãWebã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ãŒãƒªã‚½ãƒ¼ã‚¹ã‚’é£Ÿã„ã¤ã¶ã™åŽŸå› ã‚’æŽ¢ã‚‹ãŸã‚ã«ã‚„ã£ãŸã“ã¨ã€Backlog PlayåŒ–ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã€‘
ãƒŒãƒ¼ãƒ©ãƒœã§Scalaã‚’æ›¸ãRubyistã®è°·æœ¬ã§ã™ã€‚ãƒŒãƒ¼ãƒ©ãƒœã§ã¯ã€Backlogã®é–‹ç™ºã‚’æ‹…å½“ã—ã¦ãŠã‚Šã€æœ€è¿‘ã§ã¯Backlogã‚’Javaã‹ã‚‰Scala / Play Frameworkã«ç§»è¡Œã™ã‚‹ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã®ãƒ¡ãƒ³ãƒãƒ¼ã§ã—ãŸã€‚ Backlogã®PlayåŒ–ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§ã¯ã€OutOfMemorryError(ä»¥ä¸‹ã€OOM)ã®ç™ºç”Ÿã‚„CPUä½¿ç”¨çŽ‡ã¨ãƒãƒ¼ãƒ‰ã‚¢ãƒ™ãƒ¬ãƒ¼ã‚¸ãŒä¸ŠãŒã£ãŸã¾ã¾ã¨ã„ã†ã€Java Virtual Machineï¼ˆä»¥ä¸‹ã€JVMï¼‰ä¸Šã§å‹•ãBacklogã®ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã«é–¢ã™ã‚‹å•é¡Œã«å¯¾å‡¦ã™ã¹ãã€ä½•åº¦ã‹Heap/Thread dumpã‚’è¦‹ã‚‹æ©Ÿä¼šãŒã‚ã‚Šã¾ã—ãŸã€‚ ç§ãŒPlayåŒ–ãƒ—ãƒã‚¸ã‚§ã‚¯ãƒˆã§å–ã‚Šçµ„ã‚“ã ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹æ”¹å–„ã®çŸ¥è¦‹ã‚„çµŒé¨“ã‚’ã‚‚ã¨ã«ã€æœ¬è¨˜äº‹ã§ã¯ã€ŒJVMã§èµ·ã“ã£ãŸãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã®å•é¡Œã®åˆ‡ã‚Šåˆ†ã‘æ–¹ã€ã«ã¤ã„ã¦ãŠå±Šã‘ã—ã¾ã™ã€‚ ã¯ã˜ã‚ã« æœ¬ç•ªç’°å¢ƒã§ã—ã°ã‚‰ãå‹•ã‹ã—ã¦ã„ã‚‹ã¨ã€ã‚³ãƒ¼ãƒ‰è‡ªä½“ã¯æ£ã—ãå®Ÿè¡Œã§ãã‚‹ã‘
asa_ca3 2019/10/23
GC

scala

jvm

play

java

Backlog
ãƒªãƒ³ã‚¯
Don't Put Fat Jars in Docker Images
Philipp Hauer's Blog Engineering Management, Java Ecosystem, Kotlin, Sociology of Software Development Posted on Oct 14, 2019. Updated on Jun 12, 2022 Putting a fat jar into a Docker container is a waste of storage, bandwidth and time. Fortunately, we can leverage Dockerâ€™s image layering and registry caching to create incremental builds and very small artifacts. For instance, we could reduce the e
asa_ca3 2019/10/15
docker

jar

plugin

maven

image

jvm

java
ãƒªãƒ³ã‚¯
Throwableã«ã¤ã„ã¦æœ¬æ°—å‡ºã—ã¦è€ƒãˆã¦ã¿ãŸ - éƒ½å…ƒãƒ€ã‚¤ã‚¹ã‚± IT-PRESS
Throwableã€Exceptionã€RuntimeException(RTE)ã€Errorã‚ãŸã‚Šã‚’æ•´ç†ã—ãªãŒã‚‰ã€è‰²ã€…è€ƒãˆã¦ã¿ãŸã€‚ç§è¦‹ã«åŸºã¥ãã®ã§ã€é–“é•ã£ã¦ã„ã‚‹ã‹ã‚‚ã—ã‚Œãªã„ã‘ã‚Œã©ã€è‡ªåˆ†ã¨ã—ã¦ã¯é ãŒæ•´ç†ã§ããŸã‹ãªã€ã¨æ„Ÿã˜ãŸã®ã§æ™’ã—ã¦ã¿ã‚‹ã€‚ç•°è«–ãŒã‚ã£ãŸã‚‰ã‚³ãƒ¡ãƒ³ãƒˆãã ã•ã„ã€‚ ã¾ãšã€ä¸€ç•ªåŸºç¤Žçš„ãªã¨ã“ã‚ã§ã€ç¶™æ‰¿é–¢ä¿‚ã®æ•´ç†ã‹ã‚‰ã€‚ã“ã‚“ãªãƒ„ãƒªãƒ¼ã«ãªã£ã¦ã„ã¾ã™ã€‚ Throwable Error Exception RuntimeException ãã—ã¦ã€æœ¬ç¨¿ã§ã®ç”¨èªžã®å®šç¾©ã€‚callerï¼å‘¼å‡ºã™å´ã®ã‚³ãƒ¼ãƒ‰ calleeï¼å‘¼å‡ºã•ã‚Œã‚‹å´ï¼ˆthrowã™ã‚‹å´ï¼‰ã®ã‚³ãƒ¼ãƒ‰ã¨ã—ã¾ã™ã€‚ Throwable Throwableã¯ã€Œthrowæ–‡ã«æŒ‡å®šã§ãã‚‹ä½•ã‹ã€ã¨ã„ã†æ„å‘³ã§ã™ãã€‚ Instances of two subclasses, Error and Exception, are conventionally used
asa_ca3 2014/07/14
oomã¨ã‹ãã€‚errorå‡¦ç†ã—ã¨ã„ã¦æã¯ãªã„ã§ã™ã€‚

jvm

ã‚±ãƒ¼ã‚¹

java

exception
ãƒªãƒ³ã‚¯
Jolokia â€“ Overview
It is fast, simple, polyglot and has unique features. It's JMX on Capsaicin. Jolokia is a JMX-HTTP bridge giving an alternative to JSR-160 connectors. It is an agent based approach with support for many platforms. In addition to basic JMX operations it enhances JMX remoting with unique features like bulk requests and fine grained security policies. Overview of features which make Jolokia unique fo
asa_ca3 2014/06/13
jmx

REST

JSON

jvm

Jolokia
ãƒªãƒ³ã‚¯
JVM! JVM! JVM!
10. jmc Java Mission Control â— ãƒ¡ãƒ¢ãƒªçµ±è¨ˆã€ã‚¹ãƒ¬ãƒƒãƒ‰æ•°ã€ã‚¯ãƒ©ã‚¹æ•°ã‚’ã‚°ãƒ©ãƒ•ã‚£ã‚«ãƒ«ã«è¡¨ ç¤º â— jconsoleã¨ä¼¼ãŸã‚ˆã†ãªæ„Ÿã˜ã ã‘ã©jmcã®æ–¹ãŒãªã†ã„ï¼Ÿ â— ãƒ€ãƒƒã‚·ãƒ¥ãƒœãƒ¼ãƒ‰ã®ã‚«ã‚¹ã‚¿ãƒžã‚¤ã‚ºï¼ˆã‚°ãƒ©ãƒ•ã®è¿½åŠ ï¼‰ãŒå¯èƒ½ â— Flight Recorderã¨ã„ã†ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒªãƒ³ã‚°ãƒ„ãƒ¼ãƒ«ãŒã‚ ã‚‹ã€‚ãŒå•†ç”¨ãƒ©ã‚¤ã‚»ãƒ³ã‚¹ãŒå¿…è¦ï¼ˆã‚‰ã—ã„ â— -XX:+UnlockCommercialFeatures -XX:+FlightRecorder â— Eclipseãƒ—ãƒ©ã‚°ã‚¤ãƒ³ã¨ã—ã¦ã‚‚åˆ©ç”¨ã§ãã‚‹ï¼ˆã‚‰ã—ã„
asa_ca3 2014/06/13
jconsole

jvm

jmc

java

ç›£è¦–
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€‘
asa_ca3 2014/05/19
ã˜ã‚ã˜ã‚ OOM OutofMemory

java

heap

slideshare

jvm

Spring
ãƒªãƒ³ã‚¯
ç¬¬9å›žã€€ï¼»æœ€çµ‚å›žï¼½HotSpot JVMã®GCã‚’é¸æŠžã—ã‚ˆã† | gihyo.jp
HotSpot JVMã‚’ä½¿ã†ã¨ãã€ã©ã®ã‚ˆã†ã«GCã‚’è¨å®šã—ã¦ã„ã¾ã™ã‹ï¼Ÿ æ¤œç´¢ã—ã¦å‡ºã¦ããŸãƒ›ãƒ¼ãƒ ãƒšãƒ¼ã‚¸ã‚’è¦‹ã¦ ã€Œã¨ã‚Šã‚ãˆãšã“ã®ãƒ›ãƒ¼ãƒ ãƒšãƒ¼ã‚¸ã«ã‚ã‚‹ã‚ˆã†ã«æœ€æ–°ã®GCã‚’æŒ‡å®šã—ãŸã—ã€åŒã˜ã‚ˆã†ã«ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã‚’è¨å®šã—ãŸã‹ã‚‰å¤§ä¸ˆå¤«ã ã‚ã€ ã¨æ€ã£ã¦ã—ã¾ã†è©±ã‚’ã‚ˆãè¦‹èžãã—ã¾ã™ã€‚ å›³1ã€€èª¤ã£ãŸGCã®é¸æŠž ã—ã‹ã—ã€ãŸã¨ãˆã°ãƒãƒƒãƒã®ã‚ˆã†ã«ã‚¹ãƒ«ãƒ¼ãƒ—ãƒƒãƒˆã‚’æ„è˜ã™ã¹ãå‡¦ç†ã«ã‚‚ã‹ã‹ã‚ã‚‰ãšã€ãƒ¬ã‚¹ãƒãƒ³ã‚¹ã‚¿ã‚¤ãƒ é‡è¦–ã®GCã‚’é¸ã‚“ã§ã—ã¾ã†ã®ã¯é©åˆ‡ã§ã¯ã‚ã‚Šã¾ã›ã‚“ã€‚ æœ€çµ‚å›žã¨ãªã‚‹ä»Šå›žã¯ã€HotSpotã«ã¯ã©ã®ã‚ˆã†ãªGCãŒã‚ã‚Šã€ã©ã®ã‚ˆã†ã«ãã‚Œã‚‰ã‚’é¸æŠžã™ã‚Œã°è‰¯ã„ã®ã‹ã‚’ç´¹ä»‹ã—ã¾ã™ã€‚ 4ã¤ã®GCã‚’ä½¿ã„ã“ãªã™ HotSpot JVMã«ã¯ã€ä»¥ä¸‹ã®4ã¤ã®GCãŒå®Ÿè£…ã•ã‚Œã¦ã„ã¾ã™ã€‚ ã‚·ãƒªã‚¢ãƒ«GC ãƒ‘ãƒ©ãƒ¬ãƒ«GC ã‚³ãƒ³ã‚«ãƒ¬ãƒ³ãƒˆ ãƒžãƒ¼ã‚¯ï¼†ã‚¹ã‚¤ãƒ¼ãƒ—GCï¼ˆCMSï¼‰ ã‚¬ãƒ™ãƒ¼ã‚¸ãƒ•ã‚¡ãƒ¼ã‚¹ãƒˆGCï¼ˆG1GCï¼‰ 1ã¤ãšã¤è¦‹ã¦ã„ãã¾ã—ã‚‡ã†ã€‚ ã‚·ãƒªã‚¢ãƒ«GC ã“ã®GCã®ç‰¹å¾´ã¯ã€ãƒ’ãƒ¼ãƒ—ã®
asa_ca3 2014/03/27
jvm

GC

Java
ãƒªãƒ³ã‚¯
https://www.ej-technologies.com/jprofiler
asa_ca3 2014/03/25
java

tool

JVM
ãƒªãƒ³ã‚¯
wall-climb Â» Javaãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã¨ä»®æƒ³ãƒ¡ãƒ¢ãƒªä½¿ç”¨é‡
Tomcatã«é™ã‚‰ãšã€Javaã‚³ãƒžãƒ³ãƒ‰ã§? è¡Œã™ã‚‹ã‚µãƒ¼ãƒã‚¢ãƒ—ãƒªã‚±ãƒ¼ã‚·ãƒ§ãƒ³ã‚’å®Ÿè¡Œã™ã‚‹ãƒ›ã‚¹ãƒˆã§ã¯ã€Javaãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã€Permanenté ˜åŸŸã‚µã‚¤ã‚ºã‚’èª¿æ•´ã™ã‚‹ã®ãŒå®šçŸ³ã¨ãªã£ã¦ã„ã¾ã™ã€‚ã—ã‹ã—ã€å®Ÿéš›ã«å€¤ã‚’è¨? å¾Œã€OSä¸Šã§ã“ã‚Œã‚‰ã®å€¤ã®ä½¿ç”¨çŠ¶? ã‚’ç¢º? ã™ã‚‹ã®ã¯åœ° ã—ã ã‘ã‚³ãƒ„ãŒã„ã‚‹ã¨æ€ã„ã¾ã™ã€‚ ä¾‹ãˆãœ Javaã®èµ·å‹•ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãœ Javaãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚œ (Xmx, Xms)ã‚’2048MBã€Permanentã‚µã‚¤ã‚œ (PermSize, MaxPermSize)ã‚’384MBã«è¨å®šã—ãŸã¨ã—ã¾ã™ã€‚ã—ã‹ã—ã€Linuxä¸Šã§ã¯ãƒ¡ãƒ¢ãƒªä½¿ç”¨çŠ¶? ã‚’ç›£? ã™ã‚‹ã‚³ãƒžãƒ³ãƒ‰ã§ã‚ã‚‹freeã€vmstatã€sar -rãªã©ã‚’å®Ÿè¡Œã—ã¦ã‚‚2432MBã®åˆ©ç”¨çŠ¶? ã‚’ç¢º? ã™ã‚‹ã“ã¨ãŒå‡ºæ¥ã¾ã›ã‚“ã€‚ã“ã‚Œãœ Javaã‚³ãƒžãƒ³ãƒ‰ã§æŒ‡å®šã—ãŸJavaãƒ’ãƒ¼ãƒ—ã‚µã‚¤ã‚ºã€Permanentã‚µã‚¤ã‚ºãŒç¢º? ã—ã¦ã„ã‚‹ã®ãŒç‰©ç†ãƒ¡ãƒ¢ãƒªã§ã¯ãªãœ ã€ãƒ—ãƒã‚»ã‚¹? ã®ä»®æƒ³ãƒ¡ãƒ¢
asa_ca3 2013/11/06
java

JVM

memory
ãƒªãƒ³ã‚¯
Java: PermGen ã¯ãƒ’ãƒ¼ãƒ—ã®å¤– - toyfish.blog
ä»Šé ƒçŸ¥ã£ãŸã€‚PermGen ã‚‚æ™®é€šã«ãƒ’ãƒ¼ãƒ—å†…ã ã¨æ€ã£ã¦ã¾ã—ãŸã€‚ ä¸Šè¨˜ã®æ–°å…¬å¼ã‚µã‚¤ãƒˆã§ JDK 6u21 ã®ãƒªãƒªãƒ¼ã‚¹ã‚’çŸ¥ã£ã¦ã•ã£ããå…¥ã‚Œã¦ã¿ãŸã¨ã“ã‚ã€6u20 ã§ã¯æ™®é€šã«å‹•ã„ã¦ã„ãŸ Eclipse 3.4 ãŒã€èµ·å‹•ã—ã¦å°‘ã—æ“ä½œã—ã¦ã„ã‚‹ã¨ãƒ¡ãƒ¢ãƒªä¸è¶³ã‚’è¨´ãˆã‚‹ã‚ˆã†ã«ãªã£ãŸã€‚ä¸€çž¬ã€Œä»Šæ—¥ã‚‚ãƒ¼ ã„ã¤ãƒ¼ã‚‚ã® ãƒ’ãƒ¼ãƒ— ã¶ããã€ã¨æ€ã£ã¦ã—ã¾ã£ãŸã‘ã©ã€ãƒã‚°ãƒ•ã‚¡ã‚¤ãƒ«ã‚’è¦‹ã‚‹ã¨ã€ã‚ˆãè¦‹ã‚‹ã®ã¨ã¯ã¡ã‚‡ã£ã¨ã ã‘ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒé•ã£ã¦ã„ãŸã€‚ãã£ã€ãƒã‚ºã—ãŸã‹â€¦â€¦! OutOfMemoryError: PermGen space ãªã«? PermGen é™å®šãªã®? ã‚ããªã‚“ã‹ãã‚“ãªã‚³ãƒžãƒ³ãƒ‰ãƒ©ã‚¤ãƒ³ã‚ªãƒ—ã‚·ãƒ§ãƒ³ãŒã‚ã£ãŸã‚ˆã†ãªã€‚ã§ã‚‚è¦šãˆã¦ãªã„ãªã€‚è¦šãˆã¦ãªã„æ•…ã®éŽã¡ã€‚è¨³ã™ã¨ OutOfMemoryError ã¨ã„ã†ã‚ã‘ã‹ã€‚ãªã‚‹ã»ã©ãªã‚‹ã»ã©ãªã‚‹ã»ã©ã€‚ PermGen é ˜åŸŸã®ã‚µã‚¤ã‚ºã‚’å¤‰æ›´ã™ã‚‹ã«ã¯ã€java ã‚³ãƒžãƒ³ãƒ‰ã®ã‚ªãƒ—ã‚·ãƒ§ãƒ³ã§ HotSpot
asa_ca3 2013/11/05
â€œPermGen é ˜åŸŸâ€

tomcat

jvm

java
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asa_ca3 2013/10/18
GC

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