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RE: [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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