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RE: [Xen-ia64-devel] Time for hybrid virtualization?

To: "tgingold@xxxxxxx" <tgingold@xxxxxxx>
Subject: RE: [Xen-ia64-devel] Time for hybrid virtualization?
From: Kayvan Sylvan <kayvan@xxxxxxxxx>
Date: Fri, 25 Jan 2008 16:08:45 -0800
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Cc: Alex Williamson <alex.williamson@xxxxxx>, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
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Thread-topic: [Xen-ia64-devel] Time for hybrid virtualization?
> From: tgingold@xxxxxxx [tgingold@xxxxxxx]
> Can you tell us a little bit more about your machine?
> Is it 16 logical cpus (hyperthread) or 16 cores ?
> Are all the cpus on the same bus or is it a NUMA machine ?
> That could explain the drop off.

That's probably it.

The machine is 32 dual-core CPUs, showing up as 64 CPUs and it is organized as 
8 cells, each with 4 physical CPU chips.

How does the Xen hypervisor manage the inter-processor interrupts? I'm trying 
to understand if there is something in the way the processors are managed that 
can be changed to improve the way this scales on large multi-processor 

Best regards,

---Kayvan Sylvan

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