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Jonathan,

On 7/22/13 2:51 PM, Jonathan Rosenberg wrote:
>> +1 This sounds like a webapp that gets hot-re-deployed and has a 
>> ClassLoader leak.
> 
> Is this consistent with the fact that the app deploys just fine on
> one instance of Tomcat 7.0.22, but not on another instance?

That depends upon the other JVM's heap and PermGen settings, the
number of times you are (re-)deploying the webapp, etc.

You should upgrade. 7.0.42 is out with lots of fixes since 7.0.22.

>> 1GiB of PermGen sounds like a lot.
> 
> Agreed.  I bumped it up there just to see what happened.

How often do you redeploy? You should see if your webapp leaks
ClassLoader references. You should read
http://people.apache.org/~markt/presentations/2010-11-04-Memory-Leaks-60mins.pdf
which describes how to find leaks and how to fix them.

- -chris
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