Difference between revisions of "Monitoring and Tuning Garbage Collection"
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==== Monitoring and Tuning Garbage Collection ==== | <includeonly>==== Monitoring and Tuning Garbage Collection ====</includeonly> | ||
To monitor the frequency of Garbage Collection inside the JVM: | To monitor the frequency of Garbage Collection inside the JVM: | ||
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Revision as of 21:30, 2 October 2013
To monitor the frequency of Garbage Collection inside the JVM:
$java_home/bin/jstat -gcutil pid <intervalmillis> [root@web1]# /usr/local/java/bin/jstat -gcutil 12929 5000 S0 S1 E O P YGC YGCT FGC FGCT GCT 0.00 42.66 37.32 12.82 26.96 4845 145.414 26 1.745 147.159 0.00 42.66 37.78 12.82 26.96 4845 145.414 26 1.745 147.159 0.00 42.66 57.70 12.82 26.96 4845 145.414 26 1.745 147.159
Tuning parameters are set in catalina.sh under CATALINA_OPTS
Learn More: http://java.sun.com/javase/technologies/hotspot/gc/gc_tuning_6.html