[Asterisk-Users] Tuning the Linux kernel?

[Scott Stingel]

> -----Original Message-----
> From: asterisk-users-admin at lists.digium.com 
> [mailto:asterisk-users-admin at lists.digium.com] On Behalf Of 
> Steven Critchfield
> Sent: Thursday, November 20, 2003 9:41 PM
> To: asterisk-users at lists.digium.com
> Subject: Re: [Asterisk-Users] Tuning the Linux kernel?
> 
> 
> On Thu, 2003-11-20 at 13:03, Scott Stingel wrote:
> > Hi all-
> > 
> > It's often mentioned here that recompiling the Linux kernel 
> may improve the
> > performance of asterisk.
> > 
> > My question is:  Does re-compiling the kernel have any 
> effect if there are
> > no changes to the configuration?
> > 
> > What parameters will typically improve performance?  
> > 
> > Thanks for any insight!
> 
> Reduce unnecessary modules and drivers being built in. The 
> kernel is not
> able to swap itself out of memory and therefore the smaller 
> footprint it
> has the better.
> 
> Make sure to select and optimize for your CPU. 
> 
> There are a few others you can find from the menuconfig help system. 
> 
> Another trick to look into is cutting down of the asterisk 
> modules that
> are loaded. Our newly deployed asterisk machine is not going to do any
> IVR, and is only going to do IAX2 traffic. Because of this I 
> was able to
> trim down a lot of the modules being loaded by asterisk and decrease
> it's memory footprint. 
> 
> This also seems to reduce startup time, as well as stripping down all
> unused sections of the configs.
> 
> I know this isn't always practical for all people to do, but we wanted
> to squeeze as much as we could out of this machine. 
> -- 
> Steven Critchfield  <critch at basesys.com>
> 

Ok thanks.  Following up on your suggestion to remove unnecessary asterisk
modules,
are there any that come to mind that consume CPU horsepower when not in use?

Or is it just a memory issue?  

My scenario (for my current customers anyway) is the opposite of yours - I'm
doing IVR only!

Cheers
Scott Stingel