Messages in this thread | | | Date | Mon, 23 Feb 2009 19:09:06 +0800 | From | Miao Xie <> | Subject | Re: [BUG] sched: fair group's bug |
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on 2009-1-8 22:16 Peter Zijlstra wrote: > On Thu, 2009-01-08 at 09:30 +0800, Miao Xie wrote: >> I tested fair group scheduler on my hyper-threading x86_64 box(2 CPU * 2 HT) >> and found the deviation of the groups' CPU usage was larger than 2.6.26 >> when *offline* a CPU or do hotplug frequently. It is less than 1% On 2.6.26,but >> On current kernel, it is often greater than 4%, even than 10% by accident. > > Its not a bug -- a scheduler without smp awareness cannot be compared to > one without -- .26 just wasn't a complete group scheduler. > > At best its a regression for your particular workload. >
Hi, Peter Do you wait to fix this regression?
Thanks! Miao
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