Martin DiViaio on 19 Dec 2003 19:56:02 -0500


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Re: [PLUG] 2.4.18 --> 2.4.22 = slower, "glitches"


[...]

On the 19th day of December in the year 2003 you wrote:

> Date: Fri, 19 Dec 2003 10:09:24 -0500
> From: Gregson Helledy <gregsonh@gra-inc.com>
> To: plug@lists.phillylinux.org
> X-Spam-Status: No, hits=-2.5 required=5.0 tests=BAYES_00,FORGED_MUA_OIMO 
> 	autolearn=no version=2.60
> Subject: [PLUG] 2.4.18 --> 2.4.22 = slower, "glitches"
> 
> Last night I compiled a 2.4.22 kernel (newest package in 
> Debian stable) for my machine to allow it to access
> my new 4-in-1 card reader (MMC, CF, etc.).
> 
> I did make a bunch of sound and network cards modular,
> to allow for switching one without a recompile.  The
> previous kernel (which was a recompile of the source
> that came with Libranet 2.0) had this also.
> 
> The problem is that the machine is now noticeably slower,
> and also seems to "hang" for very brief periods every
> now and then.  The slowness is definitely not in my
> imagination.  The "hangs" are mainly noticeable when
> there's audio playing or a lot of motion (easy to see
> in glxgears, for example).
> 
> I did choose optimization for my Athlon (as in the 2.4.18
> kernel), so that's not the speed difference.  Has anyone
> ever compiled a kernel which works but has the symptoms
> above?  Was 2.4.22 just a bad release?  Any recommendations
> appreciated!
> 

Check the bigmem settings in your kernel configuration. I had the same 
problem with RedHat on my laptop and it turned out that RH had bigmem set 
to 4GB (something this laptop will never see.)


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