Hello, Kame.

On Wed, Aug 19, 2015 at 08:39:43AM +0900, Kamezawa Hiroyuki wrote:

An actual per-thread use case in our customers is qemu-kvm + cpuset.
customers pin each vcpus and qemu-kvm's worker threads to cpus.
For example, pinning 4 vcpus to cpu 2-6 and pinning qemu main thread and
others(vhost) to cpu 0-1.

taskset and/or teach qemu how to confiure its worker threads?

This is an actual kvm tuning on our customers for performance guarantee.

In another case, cpu cgroup's throttling feature is used per vcpu for vm cpu sizing.

Yeap, this is something we likely want to implement in an accessible
way.  For kvm, per-thread throttling configuration is enough, right?

Thanks.

-- 
tejun