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SubjectRe: [PATCH RFC] smt nice introduces significant lock contention
Date
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.

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-ck
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