Messages in this thread | | | From | Con Kolivas <> | Subject | Re: [PATCH RFC] smt nice introduces significant lock contention | Date | Fri, 2 Jun 2006 20:12:44 +1000 |
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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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