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From Rajalakshmi Iyer <>
Subject Re: [users@httpd] Help needed with event MPM configuration
Date Tue, 04 Nov 2014 19:17:55 GMT
So we have a situation where keep=alive connections are not being used
effectively by client applications (i.e. subsequent requests on keep-alive
connections are not frequent enough to keep Apache workers busy all the
time, resulting in low CPU utilisation). At the same time, because there
are already so many keep-alive connections, the server is not accepting any
more new connections from the client application.

Thus, the server is mostly idle but not accepting new connections.

Does reducing the KeepAliveTimeOut sound like a good option in this case?

Could you also elaborate on the statement --- With event, keep alive
connections don't tie up a thread between requests. Does that mean a thread
is allotted per connection, rather than per request in case of keep-alive
connections (thus essentially mimicking a worker MPM rather than an event


On Tue, Nov 4, 2014 at 4:25 PM, Eric Covener <> wrote:

> On Tue, Nov 4, 2014 at 11:23 AM, Eric Covener <> wrote:
> > No, with event, keepalive connections don't tie up a thread between
> requests.
> Sorry, I see what you mean. Yes, each process will stop calling accept
> out of fear that too many keepalive connections may become active (and
> hence be queued). Each process does this in case other processes are
> not similarly bogged down.
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