On Fri, 27 Aug 2021 at 21:45, Ricardo Neri
wrote:
>
> On Fri, Aug 27, 2021 at 12:13:42PM +0200, Vincent Guittot wrote:
> > On Tue, 10 Aug 2021 at 16:41, Ricardo Neri
> > wrote:
> > > @@ -9540,6 +9629,12 @@ static struct rq *find_busiest_queue(struct lb_env
> > > *env,
> > >
On Fri, Aug 27, 2021 at 12:13:42PM +0200, Vincent Guittot wrote:
> On Tue, 10 Aug 2021 at 16:41, Ricardo Neri
> wrote:
> > @@ -9540,6 +9629,12 @@ static struct rq *find_busiest_queue(struct lb_env
> > *env,
> > nr_running == 1)
> > continue;
> >
> > +
On Fri, Aug 27, 2021 at 05:17:22PM +0200, Vincent Guittot wrote:
> On Fri, 27 Aug 2021 at 16:50, Peter Zijlstra wrote:
> >
> > On Fri, Aug 27, 2021 at 12:13:42PM +0200, Vincent Guittot wrote:
> > > > +/**
> > > > + * asym_smt_can_pull_tasks - Check whether the load balancing CPU can
> > > > pull
On Fri, 27 Aug 2021 at 16:50, Peter Zijlstra wrote:
>
> On Fri, Aug 27, 2021 at 12:13:42PM +0200, Vincent Guittot wrote:
> > > +/**
> > > + * asym_smt_can_pull_tasks - Check whether the load balancing CPU can
> > > pull tasks
> > > + * @dst_cpu: Destination CPU of the load balancing
> > > + *
On Fri, Aug 27, 2021 at 12:13:42PM +0200, Vincent Guittot wrote:
> > +/**
> > + * asym_smt_can_pull_tasks - Check whether the load balancing CPU can pull
> > tasks
> > + * @dst_cpu: Destination CPU of the load balancing
> > + * @sds: Load-balancing data with statistics of the local group
On Tue, 10 Aug 2021 at 16:41, Ricardo Neri
wrote:
>
> When deciding to pull tasks in ASYM_PACKING, it is necessary not only to
> check for the idle state of the destination CPU, dst_cpu, but also of
> its SMT siblings.
>
> If dst_cpu is idle but its SMT siblings are busy, performance suffers
> if
When deciding to pull tasks in ASYM_PACKING, it is necessary not only to
check for the idle state of the destination CPU, dst_cpu, but also of
its SMT siblings.
If dst_cpu is idle but its SMT siblings are busy, performance suffers
if it pulls tasks from a medium priority CPU that does not have
