Messages in this thread | | | From | Vincent Guittot <> | Date | Thu, 7 Jul 2022 08:42:32 +0200 | Subject | Re: [PATCH] sched/fair: fix case with reduced capacity CPU |
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On Tue, 5 Jul 2022 at 10:23, Zhang Qiao <zhangqiao22@huawei.com> wrote: > > > > 在 2022/7/2 12:52, Vincent Guittot 写道: > > The capacity of the CPU available for CFS tasks can be reduced because of > > other activities running on the latter. In such case, it's worth trying to > > move CFS tasks on a CPU with more available capacity. > > > > The rework of the load balance has filterd the case when the CPU is > > classified to be fully busy but its capacity is reduced. > > > > Check if CPU's capacity is reduced while gathering load balance statistics > > and classify it group_misfit_task instead of group_fully_busy so we can > > try to move the load on another CPU. > > > > Reported-by: David Chen <david.chen@nutanix.com> > > Reported-by: Zhang Qiao <zhangqiao22@huawei.com> > > Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> > > --- > > > > David, Zhang, > > > > I haven't put your tested-by because I have reworked and cleaned the patch to > > cover more cases. > > > > Could you run some tests with this version ? > > I tested with this version, it is ok. > > Tested-by: Zhang Qiao <zhangqiao22@huawei.com>
Thanks
> > Thanks > > >
> >
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