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SubjectRe: [PATCH RFC V11 15/18] kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor
On 08/01/2013 02:34 PM, Raghavendra K T wrote:
> On 08/01/2013 01:15 PM, Gleb Natapov wrote:
>>> Shall I consider this as an ack for kvm part?
>>>
>> For everything except 18/18. For that I still want to see numbers. But
>> 18/18 is pretty independent from the reset of the series so it should
>> not stop the reset from going in.
>
> Yes. agreed.
> I am going to evaluate patch 18 separately and come with results for
> that. Now we can consider only 1-17 patches.
>

Gleb,

32 core machine with HT off 32 vcpu guests.
base = 3.11-rc + patch 1 -17 pvspinlock_v11
patched = base + patch 18

+-----------+-----------+-----------+------------+-----------+
dbench (Throughput in MB/sec higher is better)
+-----------+-----------+-----------+------------+-----------+
base stdev patched stdev %improvement
+-----------+-----------+-----------+------------+-----------+
1x 14584.3800 146.9074 14705.1000 163.1060 0.82773
2x 1713.7300 32.8750 1717.3200 45.5979 0.20948
3x 967.8212 42.0257 971.8855 18.8532 0.41994
4x 685.2764 25.7150 694.5881 8.3907 1.35882
+-----------+-----------+-----------+------------+-----------+

I saw -0.78% - .84% changes in ebizzy and 1-2% improvement in
hackbench.



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