linux-kernel - Re: [PATCH 17/24] sched/fair: Implement delayed dequeue

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Message-ID: <5280774bce7343c43904ae3df4403942092f5562.camel@gmx.de>
Date: Thu, 07 Nov 2024 15:02:36 +0100
From: Mike Galbraith <efault@....de>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Phil Auld <pauld@...hat.com>, 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 17/24] sched/fair: Implement delayed dequeue

On Thu, 2024-11-07 at 10:46 +0100, Mike Galbraith wrote:
> On Thu, 2024-11-07 at 05:03 +0100, Mike Galbraith wrote:
> >
> > I built that patch out of curiosity, and yeah, set_next_task_fair()
> > finding a cfs_rq->curr ends play time pretty quickly.
>
> The below improved uptime, and trace_printk() says it's doing the
> intended, so I suppose I'll add a feature and see what falls out.

From netperf, I got.. number tabulation practice.  Three runs of each
test with and without produced nothing but variance/noise.

	-Mike