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From "Ralph Einfeldt" <ralph.einfe...@uptime-isc.de>
Subject RE: Memory Leak
Date Thu, 15 Apr 2004 15:32:25 GMT

Which memory are you talking about:
- Java Heap
  If this doesn't go down after a load peak
  where the load of the heap was near the limit
  you have a problem. (In your test it did get down)
  To solve that, you have to find a reproducable test 
  that exposes the problem and run a profiler with that.

- OS Memory as reported by the task manager
  This will never ever go down until restart.

> -----Original Message-----
> From: Chanan Braunstein [mailto:cbraunstein@knovel.com]
> Sent: Thursday, April 15, 2004 5:24 PM
> To: 'Tomcat Users List'
> Subject: RE: Memory Leak
> 
> 
> Well, I am not sure why tomcat crashes in that case, why 
> isn't it reducing
> the memory over time. I might add that I noticed that even during low
> traffic periods the memory won't go back down. Even if I take 
> one off the
> cluster (hardware load balancer), so no traffic is going to 
> it at all the
> memory doesn't go down.
> 
> 
> Chanan Braunstein
> Knovel Corp.
> Web Development Manager
> 607-773-1840 x672
> http://www.knovel.com
>  
> 
> -----Original Message-----
> From: Ralph Einfeldt [mailto:ralph.einfeldt@uptime-isc.de] 
> Sent: Thursday, April 15, 2004 11:11 AM
> To: Tomcat Users List
> Subject: RE: Memory Leak
> 
> From your description it is not shure that you have a memory 
> leak at all.
> 
> The vm is not returning free memory to the os. So the memory 
> as seen by the
> os will alway be the maximum value that the jvm ever needed during the
> runtime.
> 
> The other option that explains your observertion is that you 
> test fails to
> expose the memory leak.
> 
> > -----Original Message-----
> > From: Chanan Braunstein [mailto:cbraunstein@knovel.com]
> > Sent: Thursday, April 15, 2004 4:27 PM
> > To: 'Tomcat Users List'
> > Subject: Memory Leak
> > 
> > but then GC kicks in and drops down back to where it was when I 
> > started the test. However, the memory in the task manager 
> keeps going 
> > up.
> 
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