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From "Houser, Rick" <>
Subject RE: [users@httpd] Problems with Event MPM Performance Tuning in 2.4.18
Date Mon, 27 Jun 2016 13:43:09 GMT
That’s a very practical solution for small configurations, and we already use it for some
tomcat instances.  Unfortunately, when you start dealing with hundreds of appservers in various
states, the configuration and load balancing issues add up fast.  The mod_cluster configuration
model of the appservers advertising their presence and configuring the mod_proxy routes is
perfect, just we ran into significant implementation flaws.  To get mod_proxy_balancer to
work, we would need to build and inject the balancer configurations into the apache instances
at runtime (possibly graceful would suffice).  I suspect we would also need to add some capacity
to account for the lack of backend load balancing, etc.  Overall, I think that would be far
more disruptive to us than a periodic manual restart of the apache instances when memory creeps

Rick Houser
Web Administration

From: Daniel []
Sent: Monday, June 27, 2016 04:30
To: <> <>
Subject: Re: [users@httpd] Problems with Event MPM Performance Tuning in 2.4.18

As a real mitigation, maybe you could just use to mod_proxy and mod_proxy_balancer, also those
are not third party modules and probably will render the same functionality you seek.

Daniel Ferradal
IT Specialist

email         dferradal at<>
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