linux-kernel - Re: [PATCH V2] sched/fair: Dequeue sched_delayed tasks when waking to a busy CPU

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Message-ID: <9c78aebb3fdb8af68937a0301fabc3acb3e20c2d.camel@gmx.de>
Date: Mon, 02 Dec 2024 17:55:28 +0100
From: Mike Galbraith <efault@....de>
To: Phil Auld <pauld@...hat.com>
Cc: 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,
 kprateek.nayak@....com, wuyun.abel@...edance.com, 
 youssefesmat@...omium.org, tglx@...utronix.de
Subject: Re: [PATCH V2] sched/fair: Dequeue sched_delayed tasks when waking
 to a busy CPU

On Mon, 2024-12-02 at 11:24 -0500, Phil Auld wrote:
> On Sat, Nov 23, 2024 at 09:44:40AM +0100 Mike Galbraith wrote:
>
>
> > Question: did wiping off the evil leave any meaningful goodness behind?
>
> Is that for this patch?

Yeah.  Trying it on my box with your write command line didn't improve
the confidence level either.  My box has one CPU handling IRQs and
waking pinned workers to service 8 fio instances.  Patch was useless
for that.

	-Mike