On 2/6/07, Abhijit Bhatnagar <abhinator@xxxxxxxxx> wrote:
> I have Apache/2.0.46 (Red Hat) with server status module installed on my server and I
> also have a script running which checks every 5 mins whether the apache server is
> responding to a http request ... The server status page after every hour or so shows 99%
> of the requests with a "w" in front and at that time my server stops responding ... What
> could be the reason for this could anyone shed some light on this ... Or direct me to
> some resources which could help me figure it out
2.0.46 is very old and should be upgraded for security reasons if nothing else.
The fact that SS is very high on all these requests implies to me that
your php scripts are stuck someplace and unable to finish serving
requests. Perhaps you have database contention or some other
resource
that is not available. You may also simply be out of memory, causing
apache to thrash (check "top").
If you can't figure out what is causing your php scripts to stick, you
can attach to them with a debugger to see where they are at:
http://httpd.apache.org/dev/debugging.html#backtraceAs a temporary measure, it may also help to reduce MaxClients
substantially, which should limit contention on whatever resource is
causing the problem.
Joshua.
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