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Number of processes greater than MaxClients?

2:51 pm on Mar 31, 2010 (gmt 0)

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Is it possible for Apache [2.2.12 (Ubuntu) prefork] to have a MaxClients setting of, say, 18, but have the number of processes spike to a number significantly higher? (In this case, I am seeing 30+).

I am observing this. I've stopped/started Apache (rather than a reload). I am seeing the message in the Apache error log: "[Wed Mar 31 10:38:49 2010] [error] server reached MaxClients setting, consider raising the MaxClients setting." But I'm not too troubled by that: I am assuming that the listenbacklog (default = 511) will eventually capture queued requests.


<IfModule mpm_prefork_module>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
MaxClients 18
MaxRequestsPerChild 0