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From Mark Thomas <>
Subject Re: Help with memory leak using Tomcat
Date Fri, 10 Jun 2005 17:56:41 GMT
Does your profiling tool tell you the classes of the objects being 
created? Can you take a snapshot at two points in time, compare them and 
see what is  different? If we know the class of the objects being 
created, it gives us a pretty good pointer as to where to start looking. 
Without this information, it is needle in haystack time.

If your profiler doesn't do this, you probably need to get a new profiler.


Ed Hamilton wrote:
> I posted something similar to the Tomcat bug list and was asked to move it
> here.  My first mailing to this list, so please correct any gaffes on my
> part...
> I'm running Tomcat 5.5.9; isapi redirector 1.2.13; J2SE; JDBC
> 3.1.8a;  to support 2 very low volume websites.  I have some kind of memory
> leak which triples tomcat's memory usage over about 4-5 days.
> I downloaded and installed AppPerfect profiler, and it shows a steady,
> consistent increase in objects and a corresponding decrease in the heap
> size.  Even with my webserver shutdown and no Tomcat usage, this leak is
> persistent. The memory leak checker portion of AppPerfect reports multiple
> memory leaks (even with the web server shutdown as I mentioned.)
> Can anybody help me figure out how to find out where this is coming from?
> Best regards,
> Ed Hamilton
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