On Sat, 20 Mar 2021 at 23:21, Barry Song wrote:
>
> update_idle_core() is only done for the case of sched_smt_present.
> but test_idle_cores() is done for all machines even those without
> smt.
> this could contribute to up 8%+ hackbench performance loss on a
> machine like kunpeng 920 which has n
On Sun, Mar 21, 2021 at 11:14:32AM +1300, Barry Song wrote:
> update_idle_core() is only done for the case of sched_smt_present.
> but test_idle_cores() is done for all machines even those without
> smt.
> this could contribute to up 8%+ hackbench performance loss on a
> machine like kunpeng 920 wh
On Sun, Mar 21, 2021 at 11:14:32AM +1300, Barry Song wrote:
> update_idle_core() is only done for the case of sched_smt_present.
> but test_idle_cores() is done for all machines even those without
> smt.
> this could contribute to up 8%+ hackbench performance loss on a
> machine like kunpeng 920 wh
ject: [Linuxarm] Re: [PATCH] sched/fair: remove redundant test_idle_cores
> for non-smt
>
> Hi Barry,
>
> On 2021/3/21 6:14, Barry Song wrote:
> > update_idle_core() is only done for the case of sched_smt_present.
> > but test_idle_cores() is done for all machines ev
Hi Barry,
On 2021/3/21 6:14, Barry Song wrote:
> update_idle_core() is only done for the case of sched_smt_present.
> but test_idle_cores() is done for all machines even those without
> smt.
The patch looks good to me.
May I know for what case we need to keep CONFIG_SCHED_SMT for non-smt
machines
update_idle_core() is only done for the case of sched_smt_present.
but test_idle_cores() is done for all machines even those without
smt.
this could contribute to up 8%+ hackbench performance loss on a
machine like kunpeng 920 which has no smt. this patch removes the
redundant test_idle_cores() for
6 matches
Mail list logo
