Re: [PATCH RFC] smt nice introduces significant lock contention

[Con Kolivas]

On Friday 02 June 2006 19:53, Chen, Kenneth W wrote:
> Yeah, but that is the worst case though.  Average would probably be a lot
> lower than worst case.  Also, on smt it's not like the current logical cpu
> is getting blocked because of another task is running on its sibling CPU.
> The hardware still guarantees equal share of hardware resources for both
> logical CPUs.

"Equal share of hardware resources" is exactly the problem; they shouldn't 
have equal share since they're sharing one physical cpu's resources. It's a 
relative breakage of the imposed nice support and I disagree with your 
conclusion.

-- 
-ck
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