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From: "Kommuru, Bhaskar" <Bhaskar.Kommuru@standardbank.co.za>
To: "'users@httpd.apache.org'" <users@httpd.apache.org>
Date: Fri, 4 Jun 2004 12:26:47 +0200 
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Subject: RE: [users@httpd] httpd.conf - tuning performance

Thanks Eugene & Robert, It is helping now. 
The document says as below.
         BeOS - beos 
         Netware - mpm_netware 
         OS/2 - mpmt_os2 
         Unix - prefork 
         Windows - mpm_winnt 
1. When apache uses "worker.c" module
2. My apache2.0.49 is compiled with "prefork". So it mean i can use only
directives that are available from  "prefork" and not from "workder.c".

I am getting there, bit struck here. Please help me
Thanks
Bhaskar

-----Original Message-----
From: Robert Andersson [mailto:robert@profundis.nu]
Sent: Friday, June 04, 2004 11:07 AM
To: users@httpd.apache.org
Subject: Re: [users@httpd] httpd.conf - tuning performance


httpd.conf - tuning performance[plain text, please...]

Kommuru, Bhaskar write:
> I have come across "<IfModule prefork.c>" and "<IfModule worker.c>".
> What is the difference between them? Is it executed based on the operating
> system?

They are examples of MPMs (Multi-Processing Modules) and primirily deals
with how Apache deals with requests on a low level. You can read about them
here:
    http://httpd.apache.org/docs-2.0/mpm.html
    http://httpd.apache.org/docs-2.0/mod/prefork.html
    http://httpd.apache.org/docs-2.0/mod/worker.html

You select which MPM to use at compile time, you can only have one, and you
need to recompile to change it later. You can find out which MPM your Apache
has by running "httpd -V" (*nix) or "apache -V" (windows).

Regards,
Robert Andersson


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