On 12.3.2016 07:25, Mark Geisert wrote:
> Václav Haisman wrote:
>> Hi.
>>
>> I have noticed that Cygwin's spinlock goes into heavy sleeping code
>> for each spin. It seems it would be a good idea to actually try to
>> spin a bit first. There is this 'pause' instruction which let's the
>> CPU make
Václav Haisman wrote:
Hi.
I have noticed that Cygwin's spinlock goes into heavy sleeping code
for each spin. It seems it would be a good idea to actually try to
spin a bit first. There is this 'pause' instruction which let's the
CPU make such busy loops be less busy. Here is a patch to do this.
On Mar 11 11:28, Václav Haisman wrote:
> Hi.
>
> I have noticed that Cygwin's spinlock goes into heavy sleeping code
> for each spin. It seems it would be a good idea to actually try to
> spin a bit first. There is this 'pause' instruction which let's the
> CPU make such busy loops be less busy.
Hi.
I have noticed that Cygwin's spinlock goes into heavy sleeping code
for each spin. It seems it would be a good idea to actually try to
spin a bit first. There is this 'pause' instruction which let's the
CPU make such busy loops be less busy. Here is a patch to do this.
--
VH
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