linux-kernel - Re: [PATCH 00/24] Complete EEVDF

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Message-ID: <d0160fee-87be-42c5-a050-e436980f0acd@arm.com>
Date: Thu, 1 Aug 2024 13:08:10 +0100
From: Luis Machado <luis.machado@....com>
To: Peter Zijlstra <peterz@...radead.org>, mingo@...hat.com,
 juri.lelli@...hat.com, vincent.guittot@...aro.org, dietmar.eggemann@....com,
 rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
 vschneid@...hat.com, linux-kernel@...r.kernel.org
Cc: kprateek.nayak@....com, wuyun.abel@...edance.com,
 youssefesmat@...omium.org, tglx@...utronix.de, efault@....de
Subject: Re: [PATCH 00/24] Complete EEVDF

Hi Peter,

On 7/27/24 11:27, 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
> 
> 
> 

Thanks for the updated series.

FTR, I ran this through our Pixel 6 and did not see significant differences
between the baseline (6.8 kernel with EEVDF + fixes) and the baseline with
the updated eevdf-complete series applied on top.

The power use and frame metrics seem mostly the same between the two.

I'll run a few more tests just in case.