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    SubjectRe: [PATCH v3 8/9] KVM-GST: adjust scheduler cpu power
    On Wed, 29 Jun 2011, Glauber Costa wrote:

    > This is a first proposal for using steal time information
    > to influence the scheduler. There are a lot of optimizations
    > and fine grained adjustments to be done, but it is working reasonably
    > so far for me (mostly)
    >
    > With this patch (and some host pinnings to demonstrate the situation),
    > two vcpus with very different steal time (Say 80 % vs 1 %) will not get
    > an even distribution of processes. This is a situation that can naturally
    > arise, specially in overcommited scenarios. Previosly, the guest scheduler
    > would wrongly think that all cpus have the same ability to run processes,
    > lowering the overall throughput.
    >
    > Signed-off-by: Glauber Costa <glommer@redhat.com>
    > CC: Rik van Riel <riel@redhat.com>
    > CC: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
    > CC: Peter Zijlstra <peterz@infradead.org>
    > CC: Avi Kivity <avi@redhat.com>
    > CC: Anthony Liguori <aliguori@us.ibm.com>
    > CC: Eric B Munson <emunson@mgebm.net>

    Tested-by: Eric B Munson <emunson@mgebm.net>

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