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