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RE: [Xen-devel] Opteron server and NUMA

To: "Alexander Charbonnet" <alexander@xxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Opteron server and NUMA
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Sat, 8 Oct 2005 18:51:03 +0100
Cc: Nicholas Lee <emptysands@xxxxxxxxx>
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Thread-index: AcXMLNvx4AGyWKZfSjqfQGSrPdsE7AAA95Dg
Thread-topic: [Xen-devel] Opteron server and NUMA
 > I used ab to benchmark grabbing a 100MB file 100 times from 
> localhost.  
> Natively it took 15.9 seconds.  Under Domain0 it took 41% 
> longer, 22.4 seconds.  That sure looks like it makes up a 
> huge chunk of the overall slowdown I'm noticing.
> 
> Any other tricks to try to get network performance closer to native?

Can you try running that test on the same machine running a 32bit
version of Xen. It's possible something weird is happening just on 64
bit.
Thanks,
Ian

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