Thanks for the tip, it lead me down a path of investigation that lead to teh ThreadStackSize directive for mpm_worker. It looks like ThreadStackSize would allow me to adjust the stack size for Apache only (my ideal situation), however this directive doesn't seem to affect the actual memory utilization of Apache -- for my tests I've tried using several different sizes of ThreadStackSize, from 1024 to 8196. Is there a certain magic for using ThreadStackSize? The mpm_worker doc for that directive is rather unclear. Thanks, -Tim -----Original Message----- From: Eric Covener [mailto:covener@xxxxxxxxx] Sent: Wednesday, November 21, 2007 4:17 PM To: users@xxxxxxxxxxxxxxxx Subject: Re: Excessive memory utilization with mpm_worker and glibc 2.4+ On Nov 21, 2007 2:01 PM, Spangler, Tim <Tim_Spangler@xxxxxxx> wrote: > Hello all, > On the SLES 9 and Red Hat systems (glibc 2.3), 'ps -ea -o > "pcpu,vsz,args,pagein" | grep -i httpd | grep -v grep' reveals that > apache is using apx 313MB of ram. No problem here, about 2.5MB per thread. > > On the SLES 10 system (glibc 2.4), same Apache build and settings, I > find that Apache is using apx 1179MB of ram, or about 9.25MB per > thread. A 370% increase in memory utilization. This memory > utilization can also be confirmed via top, free, or whatever other > flavor of utility you would like to use. Linux default stack size is something very large when ulimit -s is set to unlimited. Try ThreadStackSize or ulimit -s <something other then 8M> -- Eric Covener covener@xxxxxxxxx --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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