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Re: [Xen-devel] [PATCH RFC V4 0/5] kvm : Paravirt-spinlock support for KVM guests



On 01/16/2012 03:43 PM, Raghavendra K T wrote:
>>> Dbench:
>>> Throughput is in MB/sec
>>> NRCLIENTS     BASE                    BASE+patch           
>>> %improvement
>>>                     mean (sd)               mean (sd)
>>> 8           1.101190  (0.875082)     1.700395  (0.846809)     54.4143
>>> 16          1.524312  (0.120354)     1.477553  (0.058166)     -3.06755
>>> 32            2.143028  (0.157103)     2.090307  (0.136778)    
>>> -2.46012
>>
>> So on a very contended system we're actually slower? Is this expected?
>>
>>
>
>
> I think, the result is interesting because its PLE machine. I have to
> experiment more with parameters, SPIN_THRESHOLD, and also may be
> ple_gap and ple_window.

Perhaps the PLE stuff fights with the PV stuff?

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


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