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From "Joshua Slive" <jos...@slive.ca>
Subject Re: [users@httpd] Server hanging with requests in "W" state
Date Wed, 27 Feb 2008 14:25:07 GMT
On Wed, Feb 27, 2008 at 3:43 AM,  <pthyseba@intec.ugent.be> wrote:
>
>  > Whats your timeout and keepalivetimeout settings set to ?
>  >
>  > If you have them more than 15 secs ? then you'll DOS yourself
>  >
>  > IE will hold open connections to the server for as long as it can...
>  >
>
>
>  Timeout 300
>  KeepAliveTimeout 15
>
>  SSl config contains directives to deal with Internet Explorer SSL
>  keepalive issues as in previous post.
>
>  I've been thinking of loading additional logging modules to debug this
>  problem.
>
>  mod_log_forensic seems unnecessary: it only helps to check which
>  connections are hanging it seems, and I have no problem determining that
>  by looking at my server-status page.
>
>  Since these requests are hanging, they don't show up in the apache log
>  file, so I would need some module to log every bit of traffic as soon as
>  it arrives or is generated - maybe mod_dump_io will allow me to track
>  traffic over a connection as a function of time?

mod_log_forensic does exactly what you want. It logs immediately on
receiving the connection, and if you kill the server when there are
hung connections and then run the check_forensic script, you'll get a
list of all the in-process connections.

Joshua.

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