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From: Thomas Gleixner <tglx@linutronix.de>
To: Peter Zijlstra <peterz@infradead.org>,
	bigeasy@linutronix.de, mingo@kernel.org
Cc: linux-kernel@vger.kernel.org, peterz@infradead.org,
	juri.lelli@redhat.com, vincent.guittot@linaro.org,
	dietmar.eggemann@arm.com, rostedt@goodmis.org,
	bsegall@google.com, mgorman@suse.de, vschneid@redhat.com,
	ankur.a.arora@oracle.com, efault@gmx.de
Subject: Re: [PATCH 5/5] sched: Add laziest preempt model
Date: Tue, 08 Oct 2024 16:23:36 +0200	[thread overview]
Message-ID: <87ed4qu107.ffs@tglx> (raw)
In-Reply-To: <20241007075055.671722644@infradead.org>

On Mon, Oct 07 2024 at 09:46, Peter Zijlstra wrote:
> Much like LAZY, except lazier still. It will not promote LAZY to full
> preempt on tick and compete with None for suckage.
>
> (do we really wants this?)

Just to prove how bad NONE is without cond_resched() ?

I'm sure we can do without that experiment.

Thanks,

        tglx

  parent reply	other threads:[~2024-10-08 14:23 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-07  7:46 [PATCH 0/5] sched: Lazy preemption muck Peter Zijlstra
2024-10-07  7:46 ` [PATCH 1/5] sched: Add TIF_NEED_RESCHED_LAZY infrastructure Peter Zijlstra
2024-10-09 12:18   ` Sebastian Andrzej Siewior
2024-10-09 13:01     ` Peter Zijlstra
2024-11-06 10:48   ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2024-10-07  7:46 ` [PATCH 2/5] sched: Add Lazy preemption model Peter Zijlstra
2024-10-08  5:43   ` Ankur Arora
2024-10-08 14:48     ` Peter Zijlstra
2024-10-09  8:50   ` Sebastian Andrzej Siewior
2024-10-09  9:14     ` Peter Zijlstra
2024-10-09  9:19       ` Sebastian Andrzej Siewior
2024-10-15 14:37   ` Shrikanth Hegde
2024-10-25 10:42     ` Sebastian Andrzej Siewior
2024-10-22 16:44   ` Shrikanth Hegde
2024-10-25 13:19     ` Sebastian Andrzej Siewior
2024-10-29 18:57       ` Shrikanth Hegde
2024-11-06 10:48   ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2024-10-07  7:46 ` [PATCH 3/5] sched: Enable PREEMPT_DYNAMIC for PREEMPT_RT Peter Zijlstra
2024-10-08 13:24   ` Sebastian Andrzej Siewior
2024-10-08 14:40     ` Peter Zijlstra
2024-10-10  6:52   ` Christoph Hellwig
2024-10-10  7:50     ` Peter Zijlstra
2024-11-06 10:48   ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2024-10-07  7:46 ` [PATCH 4/5] sched, x86: Enable Lazy preemption Peter Zijlstra
2024-11-06 10:48   ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2024-10-07  7:46 ` [PATCH 5/5] sched: Add laziest preempt model Peter Zijlstra
2024-10-08  5:59   ` Ankur Arora
2024-10-08 14:23   ` Thomas Gleixner [this message]
2024-10-08 14:40     ` Peter Zijlstra
2024-10-08 15:07   ` Sebastian Andrzej Siewior
2024-10-07  8:33 ` [PATCH 0/5] sched: Lazy preemption muck Sebastian Andrzej Siewior
2024-10-08  4:58 ` Mike Galbraith
2024-10-08 15:32 ` Sebastian Andrzej Siewior
2024-10-09  4:40   ` Ankur Arora
2024-10-09  6:20     ` Sebastian Andrzej Siewior
2024-10-09  7:23       ` Ankur Arora
2024-10-09  8:02       ` Peter Zijlstra
2024-10-09  8:45         ` Sebastian Andrzej Siewior
2024-10-09 14:01         ` Steven Rostedt
2024-10-09 20:13           ` Thomas Gleixner
2024-10-09 20:43             ` Steven Rostedt
2024-10-09 21:06               ` Thomas Gleixner
2024-10-09 21:19                 ` Steven Rostedt
2024-10-09 23:16                   ` Thomas Gleixner
2024-10-09 23:29                     ` Steven Rostedt
2024-10-10  1:20                       ` Thomas Gleixner
2024-10-10 10:23                 ` David Laight
2024-10-13 19:02                   ` Thomas Gleixner
2024-10-14  8:21                     ` David Laight
2024-10-10  3:12               ` Tianchen Ding
2024-10-10  7:47                 ` Thomas Gleixner
2024-10-09  7:30   ` Ankur Arora
2024-10-09  7:46   ` Peter Zijlstra
2024-10-09 11:07 ` Sebastian Andrzej Siewior
2024-10-17 12:36 ` Mike Galbraith
2024-11-07 17:21   ` Thomas Meyer
2024-11-08  0:59     ` Mike Galbraith

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