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From: Alexander Charbonnet <alexander@charbonnet.com>
To: xen-devel@lists.xensource.com
Subject: Opteron server and NUMA
Date: Thu, 6 Oct 2005 17:59:56 -0500	[thread overview]
Message-ID: <200510061759.56310.alexander@charbonnet.com> (raw)

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

             reply	other threads:[~2005-10-06 22:59 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-10-06 22:59 Alexander Charbonnet [this message]
2005-10-06 23:09 ` Opteron server and NUMA Nicholas Lee
2005-10-07  8:58   ` Keir Fraser
2005-10-08  1:35     ` Alexander Charbonnet
2005-10-08 11:16       ` Nicholas Lee
2005-10-08 17:21         ` Alexander Charbonnet
  -- strict thread matches above, loose matches on Subject: below --
2005-10-08 17:51 Ian Pratt

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