Re: Custom Kernels

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On Wed, 2004-10-06 at 10:36, Wayne Leutwyler wrote:
> Quick question.
> 
> Would I see any performance benefits from building my own custom kernel? One 
> of the things I see is that the stock kernel is set for a Pentium II, but 
> since this machine I am using is a Pentium III, I was wondering if that would 
> give me any benefit.  Also I try on turn off things I know I wont need on 
> this PC. 

Any kind of performance tuning should start with analyzing what you are
using the machine for and spending the time to identify where most of
your resources are being spent.  

Simply jumping in and frobbing the knobs is generally not good
practice.  In most cases it will adversely affect your systems
performance instead of improving it.

And the kernel is probably the last item to work when optimizing a
system.  Again it really depends on what it is you are trying to improve
performance of.  For a heavy duty database server you will probably get
more benefit by tweaking the queries or setting up proper keys.  For a
network application you may want to adjust window size or some of the
other network parameters.  If a particular application is slow doing
certain calculations it may need to be re-written using a different
algorithm.  If you are reading and writing huge files you might need to
use a different type of file system that optimizes that kind of function
or use higher speed disk drives.

So until you really analyze what specific performance criteria you are
trying to improve messing with the kernel is a blind alley at best and
at worst you could decrease performance of most things on your system.

-- 
Scot L. Harris
webid@xxxxxxxxxx

The absence of labels [in ECL] is probably a good thing.
		-- T. Cheatham 


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