Hello,

i experience slow page loads in production using mod_wsgi. The django 
debugging toolbar reveals a very high CPU use with lots of voluntary context 
switches:

Production (Apache mod_wsgi-3.2, daemon mode, 10 threads):
User CPU time    3580.224 msec
System CPU time  156.010 msec
Total CPU time   3736.234 msec
Elapsed time     3671.237 msec
Context switches 21573 voluntary, 108 involuntary

Same page compared using the dev server:

Development (Django dev server):
User CPU time    90.987 msec
System CPU time  5.999 msec
Total CPU time   96.986 msec
Elapsed time     99.323 msec
Context switches 0 voluntary, 51 involuntary

SQL queries doesn't seem to be the problem. I reduced the number of queries to 
1 or 2 using johnny-cache, but the CPU time is still nearly the same as in the 
above example.

The load of the server is somewhere around 0.1 to 0.3 so this can't be the 
problem either.

Best Regards,
Dirk Eschler

-- 
Dirk Eschler <[email protected]>

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