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From Jim Jagielski <...@jaguNET.com>
Subject Re: [users@httpd] prefork vs worker mpm in apache
Date Tue, 03 Nov 2015 19:21:51 GMT

> On Nov 3, 2015, at 10:43 AM, Tim Dunphy <bluethundr@gmail.com> wrote:
> 
> 
> Hey guys,
> 
> We had to recompile apache 2.4.12 because we needed to disable thread safety in php (ZTS).
 Because for some reason when compiling php with the --disable-maintainer-zts with the worker
mpm model and checking the php info page, it was saying that thread safety was still enabled.
> 
> So when we recompiled apache to use the prefetch worker model instead of worker, the
php info page was showing that  thread safety was disabled.
> 
> But after that change apache processes spiked from around 11 processes per machine to
well over 250 processes at any given time.
> 
> These are the tuning settings we have in apache:
> 
> StartServers 10
> 
> #MinSpareServers 10
> 
> #MaxSpareServers 25
> 
> ServerLimit 250
> 
> MaxRequestWorkers 250
> 
> MaxConnectionsPerChild 1000

Should be 0.

> 
> KeepAlive On
> 
> KeepAliveTimeout 30

Should be 3 or so

> 
> EnableSendfile Off

Should be On


Cheers!
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