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From Carl Johnstone <modp...@fadetoblack.me.uk>
Subject Re: Profiling live mod_perl backends
Date Mon, 30 Mar 2009 11:45:56 GMT
Cosimo Streppone wrote:
> However, some bad problems start to be evident only with really
> high req/s rate.

Another possibility is that once you hit full load you're just pushing 
the server over the edge for what it can manage load-wise. Use your 
normal OS monitoring tools and ensure that you've not started to swap 
excessively or have two many CPU-bound requests.

If it is the case, you'll probably find that you'll benefit from 
reducing the number of concurrent apache processes.

Carl


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