Re: [Xen-devel] Xen 4.2.2 / KVM / VirtualBox benchmark on Haswell

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On gio, 2013-07-11 at 17:23 +0100, George Dunlap wrote:
> On Thu, Jul 11, 2013 at 11:53 AM, Dario Faggioli
> > When I tried to use kernel compile as a benchmark for the NUMA effects,
> > it did not turn out that useful to me (and that's why I switched to
> > SpecJBB), but perhaps it was me that was doing something wrong...
> 
> In my experience, kernel-build has excellent memory locality.  One
> effect is that the effect of nested paging on TLB time is almostt nil;
> I'm not surprised that the caches make the effect of NUMA almost nil
> as well.
> 
Not to mention I/O, unless you setup a ramfs backed building
environment. Again, when I tried, that was my intention, but perhaps I
failed right at that... Gordan, what about you?

Dario

-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
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Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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