Re: apache in worker mode eats memory
From: Andrew McNaughton (andrew_at_scoop.co.nz)
Date: 04/28/05
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Date: Thu, 28 Apr 2005 21:35:43 +1200 (NZST) To: Mark Bojara <mark@aboutit.co.za>
If apache is allowed to spawn enough processes to run you out of memory,
you are going to have problems. Work on your apache config and process
limits to make sure this can't happen.
If you consume enough memory to start paging, the time it takes for a
request to be handled climbs, more processes mount up, you consume more
memory, and the system goes down badly. Limiting how much you try to
handle at once enables you to handle more.
If your server processes have a large memory footprint, using a proxy in
front of your web server to handle spooling requests to users might help a
lot. Caching is not necessarily part of that picture, but that might also
help save you from using large apache processes to serve simple requests.
Andrew McNaughton
On Thu, 28 Apr 2005, Mark Bojara wrote:
> Date: Thu, 28 Apr 2005 11:15:09 +0200 (SAST)
> From: Mark Bojara <mark@aboutit.co.za>
> To: freebsd-isp@freebsd.org
> Subject: apache in worker mode eats memory
>
> Hi All
>
> Im running Apache 2.0.53 server on 5.4-RC3 AMD64 in Worker mode. This
> webserver serves 50000 hits per hour. Whats currently happening is it
> works fine for 8 hours then the server just starts spawning httpd
> processes when it reaches about 70 processes the box runs out of memory
> and swap space then crashes :(
>
> This is what I currently have set:
> ServerLimit 16
> StartServers 2
> MaxClients 150
> MinSpareThreads 25
> MaxSpareThreads 75
> ThreadsPerChild 25
> MaxRequestsPerChild 20000
> EnableSendfile Off
> HostnameLookups Off
> EnableMMAP on
> Timeout 120
> KeepAlive On
> MaxKeepAliveRequests 1024
> KeepAliveTimeout 15
>
> Anyone seen this perhaps a better way of doing it?
>
> Thanks
> Mark
>
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-- There is no way to happiness Happiness is the way ------------------------------------------------------------------- Andrew McNaughton http://www.scoop.co.nz/ andrew@scoop.co.nz Mobile: +61 422 753 792 -- pgp encrypted mail welcome keyid: 70F6C32D keyserver: pgp.mit.edu 5688 2396 AA81 036A EBAC 2DD4 1BEA 7975 A84F 6686 _______________________________________________ freebsd-isp@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-isp To unsubscribe, send any mail to "freebsd-isp-unsubscribe@freebsd.org"
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