Abobe attached thread dump has been taken while application was not responding. Can you please check and see if there is anything suspicious ?
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Tomcat occupying high CPU
I have an application running on tomcat 5.5. After 2-3 days tomcat start occupying very high CPU and application becomes unresponsibe. I have told it seems there is some sun native method which is being called unwantedly and threads are not being closed. I am attaching application thread dump over here. Can someone please take a look at this and advise what is actually happening with the application.
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Answers
In attached thread dump maximum threads are waiting for below method.
at java.beans.Introspector.fi
- waiting to lock <0x0000002a9cfd4e60> (a java.lang.Class)
What does this mean ? Can someone tell me what does it lead to and in which type of issue / bug / leak could be. Any help to sort this issue ?
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by: Ajay-SinghPosted on 2009-02-26 at 20:11:25ID: 23752586
I feel, its typical symptom of GC running aggressively. You can check
the following:
1. Enable gc logging, by adding "-verbose:gc -Xloggc:gc.log" to startup
options
2. Take a thread-dump when the application is not responding, analyze it
and see which thread is eating up CPU.