Messages in this thread | | | Date | Tue, 15 Jan 2013 10:34:15 +0800 | From | Alex Shi <> | Subject | Re: [PATCH v3 05/22] sched: remove domain iterations in fork/exec/wake |
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On 01/14/2013 05:03 PM, li guang wrote: >>> > > This corner case may occur after "[PATCH v3 03/22] sched: fix >>> > > find_idlest_group mess logical" brought in the local sched_group bias, >>> > > and assume balancing runs on cpux2. >>> > > ideally, find_idlest_group should find the real idlest(this case: sgy), >>> > > then, this patch is reasonable. >>> > > >> > >> > Sure. but seems it is a bit hard to go down the idlest group. >> > >> > and the old logical is real cost too much, on my 2 socket NHM/SNB >> > server, hackbench can increase 2~5% performance. and no clean >> > performance on kbuild/aim7 etc. > what about remove local group bias?
Any theory profit for non local group? Usually, bias toward local group will has cache locality profit.
-- Thanks Alex
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