Re: [PATCH v4 0/8] KVM paravirt remote flush tlb

Avi Kivity
2012-09-03T14:34:13Z

On 08/21/2012 02:25 PM, Nikunj A. Dadhania wrote:
>
> kernbench(lower is better)
> ==========================
> base pvflushv4 %improvement
> 1VM 48.5800 46.8513 3.55846
> 2VM 108.1823 104.6410 3.27346
> 3VM 183.2733 163.3547 10.86825
>
> ebizzy(higher is better)
> ========================
> base pvflushv4 %improvement
> 1VM 2414.5000 2089.8750 -13.44481
> 2VM 2167.6250 2371.7500 9.41699
> 3VM 1600.1111 2102.5556 31.40060
>

The regression is worrying. We're improving the contended case at the
cost of the non-contended case, this is usually the wrong thing to do.
Do we have any clear idea of the cause of the regression?

--
error compiling committee.c: too many arguments to function