Number of loaded classes

[andrewdem]

Hi All.
I have detected that Number of loaded classes permanently increasing in my JBoss instance (I am using OptimizeItProfiler5). JBoss started and worked some time with 3393 loaded classes. But after 3 days number of classes increased up to 5821. And with heap size 55M (after run GC used heap - 20M) my application server uses 710M RAM after 3 days. Also I have detected that most of all loaded classes with names sun.reflect.GeneratedSerealisation.ConstructorAccessor1..1870
(most of all this classes has 0 instances).
Is it true that used RAM depends from number of loaded classes?
How can I correct this problem?
RedHat Linux 7.3, J2SDK 1.4.1_02, JBoss 3.2.1
--
Best regards,
Andrey Demchenko.

[adrian.brock]

Which classloader is holding those classes?

Can you see the stack trace of the allocated
classes?

Regards,
Adrian

[andrewdem]

Hello,
This is url for snapshots from OptimizeItProfiler with backtraces of methods allocating sun.reflect.GeneratedSerealisation.ConstructorAccessor2486
http://cpa.net.ua:8888/ttt.gif
http://cpa.net.ua:8888/ttt1.gif

in jboss-service.xml for jbossweb-jettty.sar
false
true

--
Best regards,
Andrey Demchenko.

[andrewdem]

Hello,
This is url for snapshots from OptimizeItProfiler with backtraces of methods allocating sun.reflect.GeneratedSerealisation.ConstructorAccessor2486
http://cpa.net.ua:8888/ttt.gif
http://cpa.net.ua:8888/ttt1.gif

At this time number of loaded classes 6636.

in jboss-service.xml for jbossweb-jettty.sar
false
true

--
Best regards,
Andrey Demchenko.

[andrewdem]

Hello,
This is url for snapshots from OptimizeItProfiler with backtraces of methods allocating sun.reflect.GeneratedSerealisation.ConstructorAccessor2486
http://cpa.net.ua:8888/ttt.gif
http://cpa.net.ua:8888/ttt1.gif

At this time number of loaded classes 6636.

in jboss-service.xml for jbossweb-jettty.sar
false
true

--
Best regards,
Andrey Demchenko.

[adrian.brock]

Are you passing lots of different objects
in jms messages?

My guess is that these reflection objects
are being cached somewhere.
Does redeploying the web app, release them?

I don't think the number of classes you mention would
explain the memory usage.

Regards,
Adrian

[andrewdem]

My application has four jms queues and sent about 5-8 messages (message is a custom object that contains DOM object) per second in peak mode.
I will try start my application on Orion Apllication Server and compare it.
Redeploying the app do not release reflection objects, and number of loaded classes increasing each time. And most of this classes has no instances.

--
Best regards,
Andrey Demchenko.

[pants]

I'm seeing the same problem when I deploy an mbean, did you manage to find out why the number of loaded classes keeps growing? Why aren't the classes unloaded?