Re: [PATCH 00/24] Complete EEVDF

Valentin Schneider
2024-08-16T15:22:37Z

On 27/07/24 12:27, Peter Zijlstra wrote:
> Hi all,
>
> So after much delay this is hopefully the final version of the EEVDF patches.
> They've been sitting in my git tree for ever it seems, and people have been
> testing it and sending fixes.
>
> I've spend the last two days testing and fixing cfs-bandwidth, and as far
> as I know that was the very last issue holding it back.
>
> These patches apply on top of queue.git sched/dl-server, which I plan on merging
> in tip/sched/core once -rc1 drops.
>
> I'm hoping to then merge all this (+- the DVFS clock patch) right before -rc2.
>
>
> Aside from a ton of bug fixes -- thanks all! -- new in this version is:
>
> - split up the huge delay-dequeue patch
> - tested/fixed cfs-bandwidth
> - PLACE_REL_DEADLINE -- preserve the relative deadline when migrating
> - SCHED_BATCH is equivalent to RESPECT_SLICE
> - propagate min_slice up cgroups
> - CLOCK_THREAD_DVFS_ID

So what I've been testing at your queue/sched/core, HEAD at:
4cc290c20a98 ("sched/eevdf: Dequeue in switched_from_fair()")
survives my (simplistic) CFS bandwidth testing, so FWIW:
Tested-by: Valentin Schneider <vschneid@redhat.com>

And for patches 01-20:
Reviewed-by: Valentin Schneider <vschneid@redhat.com>

with one caveat that I agree with Vincent on maybe doing something about
the load PELT signal of delayed dequeued entities.