Hi, I tested our Zope instance with httperf and wondered that our zope is probably not performant enough. We have the following Zope running: Hardware: Compaq DL360, 1.2GHz, 640MB RAM Software: SLES 7, Python 2.3.1, Zope 2.3.3, Apache 1.3.19 with ProxyPass/ProxyPassReverse I used the following httperf command: httperf --server web04 --uri http://web04/Technik/ --num-conn 30 --rate 3 --timeout 10 http://web04/Technik/ is normally a page which needs 3 sec to build. I get 29 client-timeoute out of 30 request. In the monitor of web04 I see max 4 python processes running with 25% CPU usage but only 35MB RSS. How can I give Python more memory ? like 128MB for each python process How can I make Zope use a better caching ? I thing that the results of the request are not cached for next request ! Is it better to use Apache with pcgi ? Any suggestions welcome :-) Regards, Dirk