[CentOS-virt] How does KVM handle multiple cores?
margoandtodd at gmail.com
Wed Nov 10 22:29:34 EST 2010
On 11/10/2010 06:59 PM, MargoAndTodd wrote:
> Hi All,
> How does KVM handle multiple cores. I have an x5650 with 6 real cores
> that presents itself to my OS as 12 virtual cores (hyperthreading).
> Does KVM see 6 or 12 cores.
> And, can I tell KVM how many cores I want it to use?
> Am I misunderstanding how KVM works?
> What I am after is if my guest is 100% busy, I still
> want some power left over for my host.
> Many thanks,
Found this is the manual page:
Simulate an SMP system with n CPUs. On the PC target,
up to 255. CPUs are supported.
Okay, not very informative. On my x5650 would that be a
maximum of 6 or 12 processors?
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