Re: [PATCH RFC V8 0/17] Paravirtualized ticket spinlocks

[Avi Kivity]

On 05/07/2012 04:53 PM, Raghavendra K T wrote:
>> Is the improvement so low, because PLE is interfering with the patch, or
>> because PLE already does a good job?
>>
>
>
> It is because PLE already does a good job (of not burning cpu). The
> 1-3% improvement is because, patchset knows atleast who is next to hold
> lock, which is lacking in PLE.
>

Not good.  Solving a problem in software that is already solved by
hardware?  It's okay if there are no costs involved, but here we're
introducing a new ABI that we'll have to maintain for a long time.

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

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