garbageCollectionAnalyse

Analyse java garbage collection logs

###abstract

• Analyse java garbage collector log.
• Measure the pause time in miliPerSecnd
• skipLines - skips first lines, so only last lines are analysed
• expected format: 3.797: [GC (Allocation Failure) 854385K->28809K(1204736K), 0.0014854 secs]

###usage

Add logging to java Garbage collection

• java -verbose:gc -Xloggc:/var/js/java.log ...
• java -verbose:gc -Xloggc:/var/js/java.log -XX:+ PrintGCDetails -XX:+PrintTenuringDistribution -XX:+PrintGCTimestamps ...
• java -verbose:gc -Xloggc:/var/js/java.log -XX:+ PrintGCDetails -XX:+PrintGCTimestamps ...
• java -verbose:gc -Xloggc:/var/js/java.log -XX:+PrintTenuringDistribution ...

Running grabageCollection analyser

java -verbose:gc -Xloggc:/var/js/java.log -jar garbageCollectionAnalyse.jar file=/var/js/java.log4 skipLines=1000

optional args:
skipLines=integer number of lines to skip before analyze file=string java garbage logfile /var/js/java.log0

actual args: [file=/var/js/java.log4, ]

miliPerSec=8 lineCount=159217 countNoMatch=3

###arguments

Unique prefix of argument name is enough (No need to type full name).

• file=/var/js/java.log0
• skipLines=10000 Skip first 10000 lines

files

• garbageCollectionAnalyse.java
• Args.java Argumet parser for Java (MIT license)

License

• MIT License, free to change and redistribute, Just keep the credit.
• Any question or requests are welcome

Authors and Contributors

eli.shagam@gmail.com

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