Take the 2-minute tour ×  I'm transitioning from Xen 3.4 to KVM
on CentOS 5.5. I need to assign CPU priorities to VMs, to ensure
that one VM (vmA) always receives priority over another VM
(vmB).  In Xen I could assign a high credit scheduler weight to
vmA, but in KVM the only thing I can think of is nicing the
process associated with vmB very high.  Since this is CentOS
5.x, it doesn't appear that cgroups are available.  Is there any
better way to do this?  share|improve this question  1 Answer 1
up vote 2 down vote accepted  cgroups are available in RHEL6, so
I suppose centos 6 should also have it. As for the build itself,
centos 5.6 is out, and 5.7 should be on the way, since RHEL5.7
is available. Why 5.3? This is especially important for kvm,
because it was made supported in 5.4, and every update improved
it a LOT. With 5.3, you're behind not only the majority of
critical updates, but also on a build that kvm was never
supported on.  And to answer your question - nice is the best
option you have with the