jps and jstat for tomcat on jdk-1.6.0_24

Recently upgrading to java version "1.6.0_24", jps and jstat seemed to be broken to get monitoring information from running tomcat process.

By default is /tmp, however tomcat usually uses it's own temp directory. That is where jps/jstat looks for hsperfdata_* dirs. If is not set, it would look in /tmp. If jps can't find the hsperfdata directory, it won't report anything.

jps/jstat however allows to specify in case you're using a JVM that places those directories in a different location.

So to get it to work:

$JAVA_HOME/bin/jps -l
$JAVA_HOME/bin/jstat -gc $PID

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