can KVM use all cpu cores in a guest

Hi all,

As far as I see I can configure 4 cpu´s in a guest (using the -smp option) – but this seems to be only virtual, means the process on the host only uses one physical cpu.

Background: I want to run just one guest, using the full cpu power of a host (quadcore). Now I only get 25 % cpu load on the host.

Will this be possible with future versions?

Thanks,

Best Regards,

Martin

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KVM fully uses all 4 CPUs.

1. You need to make sure KVM is activated (not Qemu).
2. You need to have the guest workload to be multi-threaded.

-Alexey Eremenko "Technologov"

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Hi Alexey,

Thanks, I worked it out - I had an issue on the kernel and on my custom resource scheduling, now it is working with kernel 2.6.24 and the guest can use all 4 cpu´s. best regards,
martin

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