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Message-ID: <20240523084548.GI40213@noisy.programming.kicks-ass.net>
Date: Thu, 23 May 2024 10:45:48 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Luis Machado <luis.machado@....com>
Cc: mingo@...hat.com, juri.lelli@...hat.com, vincent.guittot@...aro.org,
dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
linux-kernel@...r.kernel.org, kprateek.nayak@....com,
wuyun.abel@...edance.com, tglx@...utronix.de, efault@....de,
nd <nd@....com>, John Stultz <jstultz@...gle.com>,
Hongyan.Xia2@....com
Subject: Re: [RFC][PATCH 08/10] sched/fair: Implement delayed dequeue
On Mon, Apr 29, 2024 at 03:33:04PM +0100, Luis Machado wrote:
> (2) m6.6-eevdf-complete: m6.6-stock plus this series.
> (3) m6.6-eevdf-complete-no-delay-dequeue: (2) + NO_DELAY_DEQUEUE
> +------------+------------------------------------------------------+-----------+
> | cluster | tag | perc_diff |
> +------------+------------------------------------------------------+-----------+
> | CPU | m6.6-stock | 0.0% |
> | CPU-Big | m6.6-stock | 0.0% |
> | CPU-Little | m6.6-stock | 0.0% |
> | CPU-Mid | m6.6-stock | 0.0% |
> | GPU | m6.6-stock | 0.0% |
> | Total | m6.6-stock | 0.0% |
> | CPU | m6.6-eevdf-complete-no-delay-dequeue | 117.77% |
> | CPU-Big | m6.6-eevdf-complete-no-delay-dequeue | 113.79% |
> | CPU-Little | m6.6-eevdf-complete-no-delay-dequeue | 97.47% |
> | CPU-Mid | m6.6-eevdf-complete-no-delay-dequeue | 189.0% |
> | GPU | m6.6-eevdf-complete-no-delay-dequeue | -6.74% |
> | Total | m6.6-eevdf-complete-no-delay-dequeue | 103.84% |
This one is still flummoxing me. I've gone over the patch a few times on
different days and I'm not seeing it. Without DELAY_DEQUEUE it should
behave as before.
Let me try and split this patch up into smaller parts such that you can
try and bisect this.
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