CODEWITHSUNDEEP
performancejboss
Jan Hoeve
Jan Hoeve

Reputation: 325

Jboss slows down after a while

In a nutshell: my JBoss instance is running ok, but after some days it's performance is slowly degrading.

Detailed: I've got a setup with JBoss 5.1.0-GA and Java 1.6.0_18-b07 (x64) running on a 64 bits RHEL 4 box. The hardware is a virtual machine with 8 core Xeon X5550 / 20G ram.

The product deployed in JBoss contains a webservice on which a endurance test is performed. No database is involved in the process.

The tests are performed using soapui with 4 threads and the tests are configured to create 20% cpu usage.

Let say, at first the average response times are 300ms. After 2 days, the response times are now 600ms, which I don't understand. Of course I did some checks:

While do some further investigations, I did a cpu profile with JProfiler at the beginning (when it's still fast), and on on the (slow) end. What I see then, is that every single call just is 100% slower! Even call's to a simple Map#put(). (the # of invocations and the content of these maps are the same). When running a profiler, there are no signs of blocked threads, just running threads.

Does anyone has a clue what's causing the performance degradation? Thanks!

Update: solved the performance degradation by upgrading the Java version to 1.6.0_24 !

While out of options, I scanned through all the release notes of the java vm, and discovered a performance and reliability fix in 1.6.0_23. See also the 1.6.0_23 release notes

After the jvm upgrade, the performance stays the same and does not degrade over days.

Upvotes: 19

Views: 3761

Answers (1)

Stephan
Stephan

Reputation: 43083

Solution found by Jan :

Solved the performance degradation by upgrading the Java version to 1.6.0_24 !

While out of options, I scanned through all the release notes of the java vm, and discovered a performance and reliability fix in 1.6.0_23. See also the 1.6.0_23 release notes

After the jvm upgrade, the performance stays the same and does not degrade over days.*

Upvotes: 6

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