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From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
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To: Xavier LaRue <paxl@videotron.ca>, linux-kernel@vger.kernel.org
Subject: Re: Dual P3 550 Katmai Bug
Date: Tue, 17 Dec 2002 09:29:15 -0200
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On 16 December 2002 21:27, Xavier LaRue wrote:
> Hi all,
> As I asked later this day.. my L2 cache is'nt detected on my dual p3
> 550. But I have another fuzy problem,

That's not a big loss. Undetected cache works as good as detected ;)

> all application take more cpu power in smp ( like xmms who was taking
> .3% take around 3% under and SMP kernel ( I use ps axuf to say this )

SMP operation incur locking overhead.

> .. I think the bug came from the kernel(2.4.18) since I build the
> smp kernel before adding my second processor and it was using as much
> cpu .. and another fuzzy problem, Sometime ( read one time at each 15
> min ) the cpu0 OR cpu1 get more and more loaded till it get 100% of
> cpu load and then it reget back to 0%.

Can you look which app does this? I see similar thing on SMP kernel
running on single Duron. xmms does this. xmms bug?

> My question is .. do update my kernel to a 2.4.20 ( or another
> version ) should fix my problem, also could upgrading to another
> kernel should debug my cache problem ?? BTW, I'm not using an Debian
> stock kernel.. I build it yesterday from real scratch.. (make clean
> dep; make bzImage;... )

Try newer kernel, cache detection was discussed here recently.
Or search archives...
--
vda
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