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SubjectRe: [PATCH v3 2/4] KVM: use simple waitqueue for vcpu->wq
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On 20/10/2015 09:28, Daniel Wagner wrote:
> min max mean std
> count 382.000000 382.000000 382.000000 382.000000
> mean 6068.552356 269502.528796 8056.016198 3912.128273
> std 707.404966 848866.474783 1062.472704 9835.891707
> min 2335.000000 29828.000000 7337.426000 445.738750
> 25% 6004.500000 44237.500000 7471.094250 1078.834837
> 50% 6372.000000 64175.000000 7663.133700 1783.172446
> 75% 6465.500000 150384.500000 8210.771900 2759.734524
> max 6886.000000 10188451.000000 15466.434000 120469.205668
>
> After
> min max mean std
> count 300.000000 300.000000 300.000000 300.000000
> mean 5618.380000 217464.786667 7745.545114 3258.483272
> std 824.719741 516371.888369 847.391685 5632.943904
> min 3494.000000 31410.000000 7083.574800 438.445477
> 25% 4937.000000 45446.000000 7214.102850 1045.536261
> 50% 6118.000000 67023.000000 7417.330800 1699.574075
> 75% 6224.000000 134191.500000 7871.625600 2809.536185
> max 6654.000000 4570896.000000 13528.788600 52206.226799

Anything above ~10000 cycles means that the host went to C1 or
lower---the number means more or less nothing in that case.

The mean shows an improvement indeed.

Paolo


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