On Thursday 05 Sep 2002 2:58 am, Ahsan Imam wrote:

Hello All,

I am currently running zope 2.5 and python 2.1.3.

Are you actually seeing the zope processes use too much memory? 2.5.x have a ZODB cache mechanism that does not respond well to memory pressure. If your application touches many objects per transaction then memory usage may grow out of control. 2.6 improves this significantly.

The machine has 2 gigs of rams and is running on Red Hat 7.2.

Which kernel?

After starting zope eveything works fine for a while. Slowly the swap starts to swell up

Memory that is not being actively used might as well be moved into swap, freeing the ram for more productive uses. This does not necessarily indicate a problem.

and after a few hours the machine has to be rebooted. The funny thing is that free shows that there is almost a gig of RAM free and swap keeps on growing.

Are you sure you are interpreting the output from 'free' correctly? It is often misinterpreted. (please post the output from 'free -m' if you are not sure.)

After a while the machine simply hangs.

I have recompiled python and zope. Turned on profiling. I have looked through the stupid.log. There are no core dumps either. I have also tried running zope with one thread.

Does anyone have suggestions.

you havent explained why you think this is a zope problem.