Re: 6.10/regression/bisected - after f1d97e769152 I spotted increased execution time of the kswapd0 process and symptoms as if there is not enough memory

[Filipe Manana]

On Sun, Jul 7, 2024 at 11:15 AM Andrea Gelmini <andrea.gelmini@xxxxxxxxx> wrote:
>
> Il giorno dom 7 lug 2024 alle ore 11:41 Filipe Manana
> <fdmanana@xxxxxxxxxx> ha scritto:
> > > Again, this is based on 6.10-rc6 plus 3 fixes for this issue you're both having.
> > >
> > > Can you guys test that branch?
>
> Used yesterday and today. Seems fine. Just in quick test, I see
> sometimes PSI memory spike over 40, but - important thing - no effect
> on interactivity. So I didn't investigated more.

Awesome!

>
> Well, just to be sure. I compiled the latest git with -rc6 and
> test3_em_shrinker_6.10. Nothing more about patches.

That's right, just that branch. It has all the necessary patches (3),
no need to apply any other patches on top of it.

>
> Anyway, just for the record:
> kernel: test3
>        fresh: 0:03:44 [ 241MiB/s]
>        aged: 0:02:07 [ 801MiB/s]
>        funny thing: next runs of aged no more than  0:03:22 [
> 504MiB/s] (but, as I wrote, no problem with interaction).
>
> > I just updated the branch with a last minute change to avoid an
> > unnecessary reschedule and re-lock, therefore helping reduce latency.
>
> Ok, recompile now and test!

Thanks! Much appreciated!