Re: mod_perl server doesn't reply

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Anders Nielsen wrote:
> We are using a setup with a "light-weight" apache in front of the
> mod_perl server.
> 
> Lately we have seen some problems with the mod_perl server. From time to
> time it stops responding to the requests from the front end. The problem
> seems to be related to the mod_perl server only since wget-ing on the
> localhost:port doesn't work either.
> 
> Script with small or no output do work however. The server is also able
> to handle 404's and server-status.
> 
> To debug I have tried to splitting the mod_perl the url space handled by
> mod_perl into 3 parts and creating 3 separate servers to handle these
> parts. 
> 
> The problem occurred again on all 3 servers at the same time. This has
> led me to believe that the problem might be related to the operating
> system. Perhaps some resource that is being overused. I am out of ideas
> however.

Please see:
21.7. Hanging Processes: Detection and Diagnostics
http://modperlbook.org/html/ch21_07.html

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