[Python-Dev] Re: [Psyco-devel] Re: [Zope-Coders] Psyco release 0.4.0 (original) (raw)

Paul Everitt paul@zope.com
Fri, 01 Mar 2002 16:26:56 -0500

If that's true, then the command-line speed test should show a speedup (rather than running ab against the server). Another useful test: the zodb load test.

--Paul

Petru Paler wrote:

On Fri, 2002-03-01 at 18:56, Andreas Jung wrote:

Just run ab against a Zope 2.5.0 instance and tested the performance against a stupid PythonScript.

Results: without psyco: 116 requests/second with psyco: 33 requests/second Jup, Zope is about 3.5 times slower with psyco. Any explanations for this worse behaviour ? Just a wild, wild guess: this could be related to Psyco not doing the regular interval polling, so PyThreadStateSwap() doesn't get called as often as it should, ZServer piles up requests, the worker threads get starved, and so on.