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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
