On Wed, Dec 4, 2013 at 12:00 AM, Eric Blake <ebl...@redhat.com> wrote:
> On 12/03/2013 12:52 AM, Nicolas Sebrecht wrote: > > > This is about CPU affinity. You may look at CPU pinning with 'vcpupin' > > in the manual of virsh. It is possible to enable vCPU pinning in libvirt > > guest XML. > > > > Don't know if libvirt supports applying CPU affinity at guest runtime > > Yes, 'virsh vcpupin' can be used to change CPU affinity at runtime. > > my case is migrate vm from core 0 to core 1 and get the downtime does" virsh vcpupin" work for me, and can you point me the whole step Lei > > but you could do it with usual tools (taskset, htop, etc). > > Going behind libvirt's back may lead to unexpected surprises. Also, > preferring the libvirt interfaces for changing CPU affinity gives you > better flexibility of changing things even when using remote URIs (you > don't have to open separate ssh sessions to the remote machines to run > secondary tools). > > -- > Eric Blake eblake redhat com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org > >
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