Messages in this thread | | | Date | Mon, 22 Apr 2013 16:50:38 -0400 | From | Rik van Riel <> | Subject | Re: Preemptable Ticket Spinlock |
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On 04/22/2013 04:48 PM, Peter Zijlstra wrote:
> Hmm.. it looked like under light overcommit the paravirt ticket lock > still had some gain (~10%) and of course it brings the fairness thing > which is always good. > > I can only imagine the mess unfair + vcpu preemption can bring to guest > tasks.
If you think unfairness + vcpu preemption is bad, you haven't tried full fairness + vcpu preemption :)
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