Thanks for the info Remy. I've been using Sun's JVM, but, I think I'm going
to try IBM's to see if that makes a difference.
Jon
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <users@tomcat.apache.org>
Sent: Tuesday, November 28, 2006 3:30 AM
Subject: RE: Memory leaks on webapp redeploy
Is anyone running into issues with memory leaks occuring
whenever a webapp is redeployed? I've been having a lot of
problems with this. I think what's exacerbating the problem
is that I'm using Hibernate and JAX-WS which I have bundled
with my application which use a lot of memory.
Yes, we experience same problems with Tomcat 5.5.17
We did a lot of tests and profiling instrumentations (Jprofiler powered)
on many environments : Win32/Linux, JDK1.4.2_12, JDL 1.5, Tomcat
5.5.17/5.5.20
Same problem: many redeployments (or reload) of a webapp throw an
OutOfMemory for the PermGenspace. If you monitor your Jvm with Jvmstat
tools you would see this non-heap memory never been released...
The problems seems to be located with Cglib classloaders referencing
policy. There is a lot of topic on the Net, which may be interessing to
read, but noone seems to have found a valuable solution. (Increasing the
PermGenspace is NOT a reasonable solution)
The only way we found to fix it is to change the JVM. Indeed if we use the
BEA Jrockit 1.4 JVM, the application can be deployed as many times you
want...
Please give some news, if you find something useful
RC
-----Message d'origine-----
De : Jon Miller [mailto:[EMAIL PROTECTED]
Envoyé : mardi 28 novembre 2006 01:38
À : Tomcat User List
Objet : Memory leaks on webapp redeploy
Hi all,
I think I read in a FAQ that even using a singleton in your
app will cause memory leaks? Does anyone know if this is true?
Jon
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