Re: [PATCH v3 00/10] Optimize cgroup context switch

[Ian Rogers]

On Thu, Nov 14, 2019 at 10:17 AM Ian Rogers <irogers@xxxxxxxxxx> wrote:
>
> On Thu, Nov 14, 2019 at 2:45 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> >
> > On Wed, Nov 13, 2019 at 04:30:32PM -0800, Ian Rogers wrote:
> > > Avoid iterating over all per-CPU events during cgroup changing context
> > > switches by organizing events by cgroup.
> >
> > When last we spoke (Plumbers in Lisbon) you mentioned that this
> > optimization was yielding far less than expected. You had graphs showing
> > how the use of cgroups impacted event scheduling time and how this patch
> > set only reduced that a little.
> >
> > Any update on all that? There seems to be a conspicuous lack of such
> > data here.
>
> I'm working on giving an update on the numbers but I suspect they are
> better than I'd measured ahead of LPC due to a bug in a script.
>
> Thanks,
> Ian

Apologies for the delay, I'm sending v5 that addresses review
comments. I'm still working on performance numbers.

Thanks,
Ian