Re: [PATCH] sched: Make select_idle_sibling search domain configurable

Hi Xi, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/sched/core] [also build test WARNING on tip/auto-latest v5.8] [cannot apply to block/for-next cgroup/for-next linus/master next-20200803] [If your patch is applied to the wrong git tree, kindly drop us a note.

Re: [PATCH] sched: Make select_idle_sibling search domain configurable

On Tue, Jul 28, 2020 at 10:54 AM Xi Wang wrote: > > On Tue, Jul 28, 2020 at 3:39 AM wrote: > > > > On Tue, Jul 28, 2020 at 12:01:31AM -0700, Xi Wang wrote: > > > The scope of select_idle_sibling idle cpu search is LLC. This > > > becomes a problem for the AMD CCX architecture, as the sd_llc is on

Re: [PATCH] sched: Make select_idle_sibling search domain configurable

On Tue, Jul 28, 2020 at 3:39 AM wrote: > > On Tue, Jul 28, 2020 at 12:01:31AM -0700, Xi Wang wrote: > > The scope of select_idle_sibling idle cpu search is LLC. This > > becomes a problem for the AMD CCX architecture, as the sd_llc is only > > 4 cores. On a many core machine, the range of search i

Re: [PATCH] sched: Make select_idle_sibling search domain configurable

Hi Xi, I love your patch! Yet something to improve: [auto build test ERROR on tip/sched/core] [also build test ERROR on tip/auto-latest linus/master v5.8-rc7] [cannot apply to block/for-next cgroup/for-next next-20200727] [If your patch is applied to the wrong git tree, kindly drop us a note. And

Re: [PATCH] sched: Make select_idle_sibling search domain configurable

On Tue, Jul 28, 2020 at 12:01:31AM -0700, Xi Wang wrote: > The scope of select_idle_sibling idle cpu search is LLC. This > becomes a problem for the AMD CCX architecture, as the sd_llc is only > 4 cores. On a many core machine, the range of search is too small to > reach a satisfactory level of sta

Re: [PATCH] sched: Make select_idle_sibling search domain configurable

Hi Xi, I love your patch! Yet something to improve: [auto build test ERROR on tip/sched/core] [also build test ERROR on tip/auto-latest linus/master v5.8-rc7] [cannot apply to block/for-next cgroup/for-next next-20200727] [If your patch is applied to the wrong git tree, kindly drop us a note. And

[PATCH] sched: Make select_idle_sibling search domain configurable

The scope of select_idle_sibling idle cpu search is LLC. This becomes a problem for the AMD CCX architecture, as the sd_llc is only 4 cores. On a many core machine, the range of search is too small to reach a satisfactory level of statistical multiplexing / efficient utilization of short idle time