From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Charbonnet <alexander@charbonnet.com>
Subject: Opteron server and NUMA
Date: Thu, 6 Oct 2005 17:59:56 -0500
Message-ID: <200510061759.56310.alexander@charbonnet.com>
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Hi all,

I've just gotten a new dual dual-core box at work, and am experimenting with 
Xen 3.0 on it.  I've found that I can compile SMP just fine, and it sees all 
four processors, but when I add K8 NUMA, the compile breaks.

I've benchmarked tasks taking 50-80% longer than native, and I'm pretty sure 
it's because the kernel doesn't know that different processors are closer to 
different areas of memory.

Y'all are probably working on it, but I wanted to make sure you were aware 
that it's broken.  This box doesn't need to go live for a while yet, so if 
you need me to try anything out, I'd be glad to.

Thanks for all your work!

Alex