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From: Aaron Lu <ziqianlu@bytedance.com>
To: Florian Bezdeka <florian.bezdeka@siemens.com>
Cc: Valentin Schneider <vschneid@redhat.com>,
	Ben Segall <bsegall@google.com>,
	K Prateek Nayak <kprateek.nayak@amd.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Josh Don <joshdon@google.com>, Ingo Molnar <mingo@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Xi Wang <xii@google.com>,
	linux-kernel@vger.kernel.org, Juri Lelli <juri.lelli@redhat.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Mel Gorman <mgorman@suse.de>,
	Chengming Zhou <chengming.zhou@linux.dev>,
	Chuyi Zhou <zhouchuyi@bytedance.com>,
	Jan Kiszka <jan.kiszka@siemens.com>
Subject: Re: [RFC PATCH v2 7/7] sched/fair: alternative way of accounting throttle time
Date: Wed, 23 Apr 2025 19:26:51 +0800	[thread overview]
Message-ID: <20250423112651.GA437160@bytedance> (raw)
In-Reply-To: <87776d335eec8fe02b29d96818fd5c2dde5ed7af.camel@siemens.com>

On Tue, Apr 22, 2025 at 05:03:19PM +0200, Florian Bezdeka wrote:
... ...

> Right, I should have mentioned that crucial detail. Sorry.
> 
> I ported your series to 6.14.2 because we did/do not trust anything
> newer yet for testing. The problematic workload was not available in
> our lab at that time, so we had to be very carefully about deployed
> kernel versions.
> 
> I'm attaching the backported patches now, so you can compare / review
> if you like. Spoiler: The only differences are line numbers ;-)

I didn't notice any problem regarding backport after a quick look.

May I know what kind of workload triggered this warning? I haven't been
able to trigger it, I'll have to stare harder at the code.

Thanks,
Aaron

  reply	other threads:[~2025-04-23 11:27 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-09 12:07 [RFC PATCH v2 0/7] Defer throttle when task exits to user Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 1/7] sched/fair: Add related data structure for task based throttle Aaron Lu
2025-04-14  3:58   ` K Prateek Nayak
2025-04-14 11:55     ` Aaron Lu
2025-04-14 13:37       ` K Prateek Nayak
2025-04-09 12:07 ` [RFC PATCH v2 2/7] sched/fair: Handle throttle path " Aaron Lu
2025-04-14  8:54   ` Florian Bezdeka
2025-04-14 12:10     ` Aaron Lu
2025-04-14 14:39   ` Florian Bezdeka
2025-04-14 15:02     ` K Prateek Nayak
2025-04-30 10:01   ` Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 3/7] sched/fair: Handle unthrottle " Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 4/7] sched/fair: Take care of group/affinity/sched_class change for throttled task Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 5/7] sched/fair: get rid of throttled_lb_pair() Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 6/7] sched/fair: fix h_nr_runnable accounting with per-task throttle Aaron Lu
2025-04-09 12:07 ` [RFC PATCH v2 7/7] sched/fair: alternative way of accounting throttle time Aaron Lu
2025-04-09 14:24   ` Aaron Lu
2025-04-17 14:06   ` Florian Bezdeka
2025-04-18  3:15     ` Aaron Lu
2025-04-22 15:03       ` Florian Bezdeka
2025-04-23 11:26         ` Aaron Lu [this message]
2025-04-23 12:15           ` Florian Bezdeka
2025-04-24  2:26             ` Aaron Lu
2025-05-07  9:09     ` Aaron Lu
2025-05-07  9:33       ` Florian Bezdeka
2025-05-08  2:45         ` Aaron Lu
2025-05-08  6:13           ` Jan Kiszka
2025-05-08 13:43             ` Steven Rostedt
2025-04-14  3:05 ` [RFC PATCH v2 0/7] Defer throttle when task exits to user Chengming Zhou
2025-04-14 11:47   ` Aaron Lu
2025-04-14  8:54 ` Florian Bezdeka
2025-04-14 12:04   ` Aaron Lu
2025-04-15  5:29     ` Jan Kiszka
2025-04-15  6:05       ` K Prateek Nayak
2025-04-15  6:09         ` Jan Kiszka
2025-04-15  8:45           ` K Prateek Nayak
2025-04-15 10:21             ` Jan Kiszka
2025-04-15 11:14               ` K Prateek Nayak
     [not found]               ` <ec2cea83-07fe-472f-8320-911d215473fd@amd.com>
2025-04-15 15:49                 ` K Prateek Nayak
2025-04-22  2:10                   ` Aaron Lu
2025-04-22  2:54                     ` K Prateek Nayak
2025-04-22 14:54                       ` Florian Bezdeka
2025-04-15 10:34             ` K Prateek Nayak
2025-04-14 16:34 ` K Prateek Nayak
2025-04-15 11:25   ` Aaron Lu

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