Jboss 4.2.0 suddenly takes more time and memory to start up

[luuzz]

Hello,
Since a week ago, our production jboss 4.2.0 server takes longer to start up. Usually it starts in 20 s but now it takes 1m40 s.
The worst is that after a start up, when i do ps to see how much memory the java process consume; i used to see something like 3.2% of total memory but now it climbed to 7.8% which is really weird.
Any Ideas ??

[peterj]

Here are some things you can try.

a) Compare the console log (for starup) of your production server with a clean test version that has your app deployed. Compare the timestamps in the log.

b) What is in the server/xxx/data directory? Perhaps there are a lot of serialized sessions.

c) Use a tool such a jconsole or visualvm to monitor the heap usage, or set some of the JVM command line options to gather garbage collection statistics.

d) Use jmap or visualvm to get a heap dump and use visualvm to analyze it. If you do this for both the production and clean test versions you should be able to notice differences in object counts.