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From Eric Covener <>
Subject Re: [users@httpd] Help! Huge httpd process memory usage (VSS 2.5 GB each process)
Date Fri, 13 May 2011 10:52:45 GMT
On Fri, May 13, 2011 at 4:15 AM, List Member <> wrote:
> Hi List,
> We have recently compiled and have been running httpd v2.2.17 + Worker
> MPM on a RHEL system (32 bit Kernel with HugeMem & 32 GB of memory).
> The Apache behaves fine and we have been using default MPM settings
> for worker, also most of the modules are dynamically loaded and
> enabled.
> But each httpd process is using 2.5 to 2.8 G Virt Size comparing this
> to an older prefork httpd which was abt 110 M Virtual Memory. The RSS
> on both are at ~65 M..
> What could have caused this? I am using the default Apache config but
> still dont understand... :(

On linux, ulimit -s high or unlimited leads to high or 8MB per thread
allocated for stack space.  Apache probably only needs 512k

Eric Covener

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