From: Phil Auld <pauld@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: mingo@redhat.com, juri.lelli@redhat.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de,
vschneid@redhat.com, clm@meta.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 12/12] sched: Add ttwu_queue support for delayed tasks
Date: Mon, 14 Jul 2025 09:57:42 -0400 [thread overview]
Message-ID: <20250714135742.GB54091@pauld.westford.csb> (raw)
In-Reply-To: <20250703171121.GE245663@pauld.westford.csb>
Hi Peter,
On Thu, Jul 03, 2025 at 01:11:27PM -0400 Phil Auld wrote:
> On Thu, Jul 03, 2025 at 06:47:08PM +0200 Peter Zijlstra wrote:
> > On Thu, Jul 03, 2025 at 12:00:27PM -0400, Phil Auld wrote:
> >
> > > > + if (ttwu_do_migrate(rq, p, cpu))
> > > > +
> > >
> > > This doesn't compile because ttwu_do_migrate() doesn't take a *rq.
> > >
> > > It's easy enough to fix up and I'll try to have our perf team try these
> > > out.
> >
For the second part if this email...
Our perf team reports that this series (as originally posted without the minor
fixups) addresses the randwrite issue we were seeing with delayed dequeue
and shows a bit better performance on some other fs related tests.
It's neutral on other tests so modulo the issues others reported I think
we'd be happy to have these in. We did not see any new regressions.
Thanks!
Cheers,
Phil
--
next prev parent reply other threads:[~2025-07-14 13:57 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-02 11:49 [PATCH v2 00/12] sched: Address schbench regression Peter Zijlstra
2025-07-02 11:49 ` [PATCH v2 01/12] sched/psi: Optimize psi_group_change() cpu_clock() usage Peter Zijlstra
2025-07-15 19:11 ` Chris Mason
2025-07-16 6:06 ` K Prateek Nayak
2025-07-16 6:53 ` Beata Michalska
2025-07-16 10:40 ` Peter Zijlstra
2025-07-16 14:54 ` Johannes Weiner
2025-07-16 16:27 ` Chris Mason
2025-07-23 4:16 ` Aithal, Srikanth
2025-07-25 5:13 ` K Prateek Nayak
2025-07-02 11:49 ` [PATCH v2 02/12] sched/deadline: Less agressive dl_server handling Peter Zijlstra
2025-07-02 16:12 ` Juri Lelli
2025-07-10 12:46 ` [tip: sched/core] " tip-bot2 for Peter Zijlstra
2025-07-14 22:56 ` [PATCH v2 02/12] " Mel Gorman
2025-07-15 14:55 ` Chris Mason
2025-07-16 18:19 ` Mel Gorman
2025-07-30 9:34 ` Geert Uytterhoeven
2025-07-30 9:46 ` Juri Lelli
2025-07-30 10:05 ` Geert Uytterhoeven
2025-08-05 22:03 ` Chris Bainbridge
2025-08-05 23:04 ` Chris Bainbridge
2025-07-02 11:49 ` [PATCH v2 03/12] sched: Optimize ttwu() / select_task_rq() Peter Zijlstra
2025-07-10 16:47 ` Vincent Guittot
2025-07-14 22:59 ` Mel Gorman
2025-07-02 11:49 ` [PATCH v2 04/12] sched: Use lock guard in ttwu_runnable() Peter Zijlstra
2025-07-10 16:48 ` Vincent Guittot
2025-07-14 23:00 ` Mel Gorman
2025-07-02 11:49 ` [PATCH v2 05/12] sched: Add ttwu_queue controls Peter Zijlstra
2025-07-10 16:51 ` Vincent Guittot
2025-07-14 23:14 ` Mel Gorman
2025-07-02 11:49 ` [PATCH v2 06/12] sched: Introduce ttwu_do_migrate() Peter Zijlstra
2025-07-10 16:51 ` Vincent Guittot
2025-07-02 11:49 ` [PATCH v2 07/12] psi: Split psi_ttwu_dequeue() Peter Zijlstra
2025-07-17 23:59 ` Chris Mason
2025-07-18 18:02 ` Steven Rostedt
2025-07-02 11:49 ` [PATCH v2 08/12] sched: Re-arrange __ttwu_queue_wakelist() Peter Zijlstra
2025-07-02 11:49 ` [PATCH v2 09/12] sched: Clean up ttwu comments Peter Zijlstra
2025-07-02 11:49 ` [PATCH v2 10/12] sched: Use lock guard in sched_ttwu_pending() Peter Zijlstra
2025-07-10 16:51 ` Vincent Guittot
2025-07-02 11:49 ` [PATCH v2 11/12] sched: Change ttwu_runnable() vs sched_delayed Peter Zijlstra
2025-07-02 11:49 ` [PATCH v2 12/12] sched: Add ttwu_queue support for delayed tasks Peter Zijlstra
2025-07-03 16:00 ` Phil Auld
2025-07-03 16:47 ` Peter Zijlstra
2025-07-03 17:11 ` Phil Auld
2025-07-14 13:57 ` Phil Auld [this message]
2025-07-04 6:13 ` K Prateek Nayak
2025-07-04 7:59 ` Peter Zijlstra
2025-07-08 12:44 ` Dietmar Eggemann
2025-07-08 18:57 ` Peter Zijlstra
2025-07-08 21:02 ` Peter Zijlstra
2025-07-23 5:42 ` Shrikanth Hegde
2025-07-02 15:27 ` [PATCH v2 00/12] sched: Address schbench regression Chris Mason
2025-07-07 9:05 ` Shrikanth Hegde
2025-07-07 9:11 ` Peter Zijlstra
2025-07-07 9:38 ` Shrikanth Hegde
2025-07-16 13:46 ` Phil Auld
2025-07-17 17:25 ` Phil Auld
2025-07-07 18:19 ` Shrikanth Hegde
2025-07-08 19:02 ` Peter Zijlstra
2025-07-09 16:46 ` Shrikanth Hegde
2025-07-14 17:54 ` Shrikanth Hegde
2025-07-21 19:37 ` Shrikanth Hegde
2025-07-22 20:20 ` Chris Mason
2025-07-24 18:23 ` Chris Mason
2025-07-08 15:09 ` Chris Mason
2025-07-08 17:29 ` Shrikanth Hegde
2025-07-17 13:04 ` Beata Michalska
2025-07-17 16:57 ` Beata Michalska
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