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Subject: [Bug 53693] mod_fcgid performance suffers under increase in request
 concurrency
Date: Wed, 15 Aug 2012 08:55:31 +0000
Message-ID: <bug-53693-7868-fgIXxRa2o2@https.issues.apache.org/bugzilla/>
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References: <bug-53693-7868@https.issues.apache.org/bugzilla/>
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https://issues.apache.org/bugzilla/show_bug.cgi?id=53693

Dominic Benson <dominic.benson@thirdlight.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |PatchAvailable
            Summary|mod_fcgid performance       |mod_fcgid performance
                   |suffers under request       |suffers under increase in
                   |concurrency (serialization  |request concurrency
                   |of requests)                |

--- Comment #4 from Dominic Benson <dominic.benson@thirdlight.com> ---
Adjusted title slightly to reflect what the OP correctly noted: that the
problem is that requests that can't immediately be handled be an existing
process are delayed by 1s (excepting when there are no busy processes at all).

See also the comments in my patch: ultimately, additional tunables are called
for, but adding options isn't something to be done lightly (given the doc
impact), and certainly warrants some thought. Possibly explicit high/low, or a
target process count, and possibly a configurable delay could be used - or
some/all of these values could be generated at startup based on the bounds
specified by existing options.

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