Byteman: Difference between revisions
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=External= | |||
* http://byteman.jboss.org | |||
* Using Byteman to troubleshoot Java issues https://access.redhat.com/solutions/31283 | |||
=Internal= | =Internal= | ||
* [[ASM]] | |||
* [[javaagent]] | * [[javaagent]] | ||
* [[WildFly#Related|WildFly]] | |||
=Organizatorium= | |||
==Byteman Example== | |||
In clustered.conf: | |||
<pre> | |||
BYTEMAN_HOME=/path/to/byteman-download-3.0.6 | |||
... | |||
JAVA_OPTS="$JAVA_OPTS -javaagent:${BYTEMAN_HOME}/lib/byteman.jar=sys:${BYTEMAN_HOME}/lib/byteman.jar,script:/path/to/debug-stat.btm" | |||
</pre> | |||
debug-stat.btm: | |||
<pre> | |||
RULE debug stat getAverageReadTime | |||
CLASS org.infinispan.interceptors.CacheMgmtInterceptor | |||
METHOD getAverageReadTime | |||
AT EXIT | |||
IF TRUE | |||
DO System.out.println("hitTimes.sum(): " + $this.hitTimes.sum() + ", missTimes.sum(): " + $this.missTimes.sum()); | |||
ENDRULE | |||
RULE debug stat getAverageWriteTime | |||
CLASS org.infinispan.interceptors.CacheMgmtInterceptor | |||
METHOD getAverageWriteTime | |||
AT EXIT | |||
IF TRUE | |||
DO System.out.println("stores.sum(): " + $this.stores.sum()); | |||
ENDRULE | |||
RULE debug stat getAverageRemoveTime | |||
CLASS org.infinispan.interceptors.CacheMgmtInterceptor | |||
METHOD getAverageRemoveTime | |||
AT EXIT | |||
IF TRUE | |||
DO System.out.println("removeTimes.sum(): " + $this.removeTimes.sum()); | |||
ENDRULE | |||
</pre> | |||
Latest revision as of 21:15, 12 July 2018
External
- http://byteman.jboss.org
- Using Byteman to troubleshoot Java issues https://access.redhat.com/solutions/31283
Internal
Organizatorium
Byteman Example
In clustered.conf:
BYTEMAN_HOME=/path/to/byteman-download-3.0.6
...
JAVA_OPTS="$JAVA_OPTS -javaagent:${BYTEMAN_HOME}/lib/byteman.jar=sys:${BYTEMAN_HOME}/lib/byteman.jar,script:/path/to/debug-stat.btm"
debug-stat.btm:
RULE debug stat getAverageReadTime
CLASS org.infinispan.interceptors.CacheMgmtInterceptor
METHOD getAverageReadTime
AT EXIT
IF TRUE
DO System.out.println("hitTimes.sum(): " + $this.hitTimes.sum() + ", missTimes.sum(): " + $this.missTimes.sum());
ENDRULE
RULE debug stat getAverageWriteTime
CLASS org.infinispan.interceptors.CacheMgmtInterceptor
METHOD getAverageWriteTime
AT EXIT
IF TRUE
DO System.out.println("stores.sum(): " + $this.stores.sum());
ENDRULE
RULE debug stat getAverageRemoveTime
CLASS org.infinispan.interceptors.CacheMgmtInterceptor
METHOD getAverageRemoveTime
AT EXIT
IF TRUE
DO System.out.println("removeTimes.sum(): " + $this.removeTimes.sum());
ENDRULE