[Zope] Zope memory usage out of control

[Chris McDonough]

> Hi!
>
> First of all let me just say what a wonderful system Zope is.  We've
> been running dot.kde.org on a Squishdot/Zope setup very successfully
> for a quite a while now.

Great...

>
> Unfortunately, the admin of the server is getting a bit edgy about the
> increasing memory usage of Zope and is pressing for action.  From the
> very start we've had to restart Zope daily (with a cron job) because
> Zope would be using large amounts of memory after several hours.
>
> After 15 hours of uptime this is the current situation as reported by
> top:
>
>   PID USER     PRI  NI  SIZE  RSS SHARE STAT  LIB %CPU %MEM   TIME COMMAND
> 12093 zope       0   0 94988  90M   796 S       0  0.7 11.9   9:01 python
> 12122 zope       0   0 94988  90M   796 S       0  0.0 11.9   0:03 python
> 12123 zope       0   0 94988  90M   796 S       0  0.3 11.9  32:56 python
> 12124 zope       4   0 94988  90M   796 S       0 15.4 11.9  33:06 python
> 12125 zope       0   0 94988  90M   796 S       0  0.0 11.9  33:10 python
> 12126 zope       0   0 94988  90M   796 S       0  0.0 11.9  36:52 python
>
> Please tell me that's really a single process with several threads all
> sharing memory? :-)

Yes.  ;-)

>
> dot.kde.org is certainly a very busy site, is this the kind of memory
> usage to be expected from Zope?  Has anyone seen this kind of problem
> before?

Does the memory usage grow without bound?  Or does it stay steady at a large
amount? (Or have you not had the opportunity to find out?)

>
> We're using Zope 2.2.1 with the hotfixes on a Red Hat Linux box.
>
> Any hints short of switching to another news system appreciated (the
> SlashCode guys have been on our case). ;)

Don't even think about it!!  :-)