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From "Ralf Glauberman" <>
Subject Re: [users@httpd] Apache Traffic Configuration: Memory Usage, Threads Etc
Date Fri, 03 Dec 2004 20:29:42 GMT
find you http executable, then cd to its directory.
do a ./httpd -l (this is a lowercase L)
on my system the output looks like
Compiled in modules:
as you can see, i'm using prefork. for the other questions use
ps -aux and have a look at the httpd-processes, you can see the 
cpu-/mem-load. perhaps you should also try apachebench to see how much load 
your server can handle.

----- Original Message ----- 
From: David Rickard
Sent: Friday, December 03, 2004 9:07 PM
Subject: [users@httpd] Apache Traffic Configuration: Memory Usage, Threads 

Apache Version: 2.0.47
Tomcat Version: 4.1.29
Connector: mod_jk
Server: SunOS 5.9 Generic_112233-07 sun4u sparc SUNW,Ultra-250

We use a custom Java application (servlets and JSPs) used to track employee 
hours, project costs and details, sales etc; management is considering using 
the system company-wide, which means making it accessible to 1000+ employees 
per shift.  We need to analyze the system to determine its current load 
(memory and CPU usage, number of child threads spawned etc) and extrapolate 
to the potential usage to see if it's practical for us.

To do this analysis we need to know the maximum clients we can support: we 
know maximum simultaneous requests is determined by MaxClients, which in 
turn is dependent on the MPM mode Apache is running in; we need to know: a) 
how to determine which MPM module is running; b) how many average processes 
or threads Apache is spawning; and c) how much memory and CPU each 
process/thread is using.


David Rickard
Software Engineer

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