Re: [sched/fair] 8d86968ac3: netperf.Throughput_tps -29.5% regression

2020-12-02 Thread Vincent Guittot
On Wed, 2 Dec 2020 at 15:30, Li, Aubrey wrote: > > Hi Mel, > > On 2020/11/26 20:13, Mel Gorman wrote: > > On Thu, Nov 26, 2020 at 02:57:07PM +0800, Li, Aubrey wrote: > >> Hi Robot, > >> > >> On 2020/11/25 17:09, kernel test robot wrote: > >>> Greeting, > >>> > >>> FYI, we noticed a -29.5%

Re: [sched/fair] 8d86968ac3: netperf.Throughput_tps -29.5% regression

2020-12-02 Thread Mel Gorman
On Wed, Dec 02, 2020 at 10:29:59PM +0800, Li, Aubrey wrote: > > If the idle mask is not getting cleared then select_idle_cpu() is > > probably returning immediately. select_idle_core() is almost certainly > > failing so that just leaves select_idle_smt() to find a potentially idle > > CPU. That's

Re: [sched/fair] 8d86968ac3: netperf.Throughput_tps -29.5% regression

2020-12-02 Thread Li, Aubrey
Hi Mel, On 2020/11/26 20:13, Mel Gorman wrote: > On Thu, Nov 26, 2020 at 02:57:07PM +0800, Li, Aubrey wrote: >> Hi Robot, >> >> On 2020/11/25 17:09, kernel test robot wrote: >>> Greeting, >>> >>> FYI, we noticed a -29.5% regression of netperf.Throughput_tps due to commit: >>> >>> >>> commit:

Re: [sched/fair] 8d86968ac3: netperf.Throughput_tps -29.5% regression

2020-11-26 Thread Mel Gorman
On Thu, Nov 26, 2020 at 02:57:07PM +0800, Li, Aubrey wrote: > Hi Robot, > > On 2020/11/25 17:09, kernel test robot wrote: > > Greeting, > > > > FYI, we noticed a -29.5% regression of netperf.Throughput_tps due to commit: > > > > > > commit: 8d86968ac36ea5bff487f70b5ffc252a87d44c51 ("[RFC PATCH