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From: bugzilla@apache.org
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Subject: DO NOT REPLY [Bug 27138]  -
    httpd processes gets 100% of CPU, apache stop/kill don't work
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------- Additional Comments From nelson.menezes@city-link.co.uk  2005-03-08 11:18 -------
(In reply to comment #10)
> I still have the problem in 2.0.53. We are just monitoring the ill behaviour 
> and killing the slave daemons when needed (they are no longer under control of 
> master httpd process anyway). We live like that but forgot about solving this 
> issue... Not sure if it comes from Apache itself or PHP but we cannot build a 
> useful test config without php...
> 
> Michel


I've trawled the net for answers; apparently this behaviour can also come from a
misbehaving PHP script.

The best way to track it down might be to set "ExtendedStatus On" and check the
offending processes in /server-status/. Also, "strace -p <PID>" and "lsof -p
<PID>" could help find any open files that are being written/read/failed in a cycle.

I didn't find anything in my case (seems to be internal to the version of Apache
we're running), but those methods should allow you to track down the cause of
the problem, if it's a script.

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