Re: [gentoo-dev] Major MCE problem with SMP on Gentoo kernels

[Chris Gianelloni <wolf31o2@gentoo.org>]

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On Wed, 2004-05-12 at 09:58, Kevin wrote:
> Oh....  Well, that seems like an important difference between yours and my 
> arrangements.  Are you running Gentoo on a box with more than one 
> physical CPU?  I had no problems running Gentoo on this box until after 
> installing a second CPU.  That's when the weirdness started.
> 
> Is anyone here running Gentoo on a dual-physical CPU machine?  What 
> compiler flags are you using?

I am running Gentoo on several dual-CPU machines, and even one quad-CPU
machine with no troubles at all.

CFLAGS="-march=pentium4 -O2 -pipe -fomit-frame-pointer"

> > > FEATURES="autoaddcvs ccache distcc sandbox"
> 
> Huh.  That's odd.  When I installed distcc, I changed the FEATURES as 
> indicated in the docs to list distcc, but I didn't add any of those 
> others.  Wonder where they came from...

They came from the defaults.  Unless you set -autoaddcvs, etc in your
FEATURES.  There's no need to try to remove autoaddcvs, since it just
won't work.

> I was thinking "number of physical CPUs + 1" here, but ok.

You would probably get a speed boost going with -j5 rather than -j3, but
I would bench it myself before trusting anything from an external
source.

-- 
Chris Gianelloni
Developer, Gentoo Linux
Games Team

Is your power animal a penguin?

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