Lately my server seems to be a bit slower that normal, so I am toying
with some tuning knobs. I am using mod_python on Apache 2.0 (FCGI isn't
really an option as I am using a mod_python authn handler). I currently
have Apache compiled with mpm_worker with the following tuning directives:
ThreadLimit 100
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 75
MaxRequestsPerChild 10000
Right after a server restart things seem back to their previous zippy
speed (I was actually using mpm_prefork prior to this tuning frenzy),
but after a dozen or two requests it slows to the point of being
unusable. The only signs of this that I have found is that in the log
for the Trac I am accessing I see lots of duplicated messages. With some
poking I found that on the first request all messages are doubled, on
the second request all messages are tripled, and so on. Has anyone seen
this before? And if so it fixable? Alternatively does anyone else have a
well tuned setup for mod_python+Trac+SVN DAV?
--Noah Kantrowitz
Trac Hacker
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