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From: Guopeng Zhang <guopeng.zhang@linux.dev>
To: Jake Steinman <j@metarealtyinc.ca>,
	K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	Valentin Schneider <vschneid@redhat.com>,
	Waiman Long <longman@redhat.com>, Tejun Heo <tj@kernel.org>,
	linux-kernel@vger.kernel.org, cgroups@vger.kernel.org
Subject: Re: [BUG] sched/fair: divide error in __calc_prop_weight() from the enqueue path (flat-hierarchy series)
Date: Thu, 20 Aug 2026 15:23:06 +0800	[thread overview]
Message-ID: <7c492eff-46ff-44ef-9309-4a84b6c20645@linux.dev> (raw)
In-Reply-To: <20260819132207.2149185-1-j@metarealtyinc.ca>



在 2026/8/19 21:22, Jake Steinman 写道:
...

> 
> @Guopeng: thanks, the isolcpus=domain reproducer is interesting. I am
> not using isolcpus here and have no domain isolation configured, so my
> case is not that exact path, but if you want a second machine to test
> either of your series on I am happy to run them -- this box reproduces
> suspend/resume cycles all day and has 16 CPUs with a P/E/LP-E split,
> which may be a useful shape for hotplug edge cases.
> 

Thanks, Jake. I really appreciate the offer.

I'll keep it in mind. If I run into a case that I can't reproduce or
cover with the machines I have here, I'll reach out and may take you up
on it.

Thanks again,
Guopeng

> Thanks,
> Jake


  reply	other threads:[~2026-08-20  7:23 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-18 23:13 [BUG] sched/fair: divide error in __calc_prop_weight() from the enqueue path (flat-hierarchy series) Jake S
2026-08-19  5:49 ` K Prateek Nayak
2026-08-19  7:36 ` Peter Zijlstra
2026-08-19  9:49   ` Guopeng Zhang
2026-08-19 13:20 ` [PATCH] sched/fair: floor tg_cpus() at 1 Jake Steinman
2026-08-20  9:10   ` [tip: sched/urgent] sched/fair: Floor " tip-bot2 for Jake Steinman
2026-08-19 13:22 ` [BUG] sched/fair: divide error in __calc_prop_weight() from the enqueue path (flat-hierarchy series) Jake Steinman
2026-08-20  7:23   ` Guopeng Zhang [this message]
2026-08-19 18:47 ` Jake Steinman

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