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Date: Wed, 16 Jan 2008 17:34:29 +0000
From: Nick Kew <nick@webthing.com>
To: modules-dev@httpd.apache.org
Subject: Re: httpd process CPU 100%
Message-ID: <20080116173429.68b867ab@grimnir>
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On Wed, 16 Jan 2008 12:20:02 -0500
Christina Fu <fu.christina@gmail.com> wrote:

> Hi,
> 
> I have a filter module that runs well most of the time, but
> occasionally there are a few httpd processes reach and stay cpu 100%.
> Any suggestions how to debug this kind of problem?

A difficult one to deal with in the abstract.  If you can find
a particular request that causes it, then recreate it in a debugger
and/or profiler.  Otherwise maybe try some debug statements in
your code.  Or indeed, since it's a filter, insert mod_diagnostics
and look for anything like an infinite stream of zero-length brigades
(unlikely, but ...)

-- 
Nick Kew

Application Development with Apache - the Apache Modules Book
http://www.apachetutor.org/