messaging problems with high load

[rjst]

Hi,

I've been experiencing messaging problems with high message load. After a few minutes of receiving several hundreds of messages/minute, jboss crashes, and I can't shut it down. The first sign of problems is an error message with transaction time-out error.

I have this behaviour with 3.0.6 and 3.0.7 (the latter is a bit better, takes more time to crash).

I also tried 3.2.0, and found it more stable (perhaps this is related to the queue being stored in hsqldb instead of file?). however, in this version, after I stop the server, sometimes on startup the queue doesn't start, claiming unrecoverable transaction error.

About the hsqldb implementation, does anyone know if the db is compacted periodically ? My message db grows quickly.

thanks for any help
Ricardo

[adrian.brock]

What do you have for your VM memory size
and the high/max cache settings?

I'm guessing the transaction timeout is due
to an OutOfMemory?

See other posts in this forum.

Regards,
Adrian

[sczadzeck]

I'm experiencing a similar problem. After running for a few minutes (under heavy load) the subscriber simply stops receiving messages. No exceptions, no error messages. Just hangs. If my subscriber disconnects and reconnects it works fine (for a few more minutes).

I've used 3.0.6, 3.0.7, and 3.2.0 with basically the same results.

Any additional help would be greatly appreciated.

Scott

[adrian.brock]

How is a stalling subscriber the same as
an OutOfMemoryException?

Have you made a thread dump, or looked in the logs
with DEBUG and TRACE enabled?

Please start a new thread for new problems.

Regards,
Adrian