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I would like to stress test Zope and > Apache and to compare test results. The results should be as realistic as possible,

Just use ab (Apache Benchmarks) from Apache.

So you think that ab is good for Zope too? What about stress testing Obtree? Would ab be a good stress tester too? -goe- _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.