On Fri, Oct 01, 2010 at 10:03:28AM +0300, Mihamina Rakotomandimby wrote:
Manao ahoana, Hello, Bonjour,
I would like to launch several KVM guests on a multicore CPU. The number of the KVM process is over the number of physical cores.
I would like to limit each KVM process to say... 10% of CPU
I first use "cpulimit "
Would you know some better way to limit them? it's in order to avoid 4 VM to hog all the 4 hardware cores.
KVM processes are just like Linux processes, so you can pin them and renice them. There is support for pinning virtual CPUs to physical CPUs in libvirt, eg: virsh vcpupin GuestName 0 0 but you can also use Linux tools. "tuna" is one such program which I think is in Fedora, or upstream here: http://git.kernel.org/?p=linux/kernel/git/acme/tuna.git;a=summary Another tool is "renice". Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/