Re: [libvirt-users] using more than 1 core by a virtual machine
于 2011年03月17日 02:04, Zvi Dubitzky 写道:
My virtual machine xml file has<vcpu>2</vcpu> clause
while the host has
2 physical cpus (cores).
Is this enough to cause a VM running 2 endless loop threads to use the 2
cores ?
In my case the VM running reports (cat /roc/cpuinfo) that it has 2 vcpus
but it uses only 1 core (at a time) because
the 'top' at the host shows 100%cpu (out of total 200%) used by the
endless loop application
Also virsh vcpuinfo<vm> shows only 1 CPU and 1 vcpu
Is it really only 1 vcpu is showed? it should be two, that's
strange if you specified two vcpus, but only 1 is showed.
and by default, if you don't specify "cpuset" in <vcpu>, it uses
all the physical cpus, if I'm right, so you should be able to
see something like:
CPU Affinity: yy
Could you try specify "cpuset" explicitly like:
<vcpu cpuset="0,1">2</vcpu>
And see what it happens?
Regards
Osier