linux-kernel - Re: [PATCH v4 0/2] Fix and extend cpu.stat

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Message-ID: <9ca0b984-7b6b-47b2-8784-1e708599170f@bytedance.com>
Date: Thu, 27 Feb 2025 18:35:10 +0800
From: Abel Wu <wuyun.abel@...edance.com>
To: Michal Koutný <mkoutny@...e.com>,
 Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>,
 Juri Lelli <juri.lelli@...hat.com>,
 Vincent Guittot <vincent.guittot@...aro.org>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>,
 Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>,
 Yury Norov <yury.norov@...il.com>, Andrew Morton
 <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>,
 Bitao Hu <yaoma@...ux.alibaba.com>, Chen Ridong <chenridong@...wei.com>,
 "open list:CONTROL GROUP (CGROUP)" <cgroups@...r.kernel.org>,
 open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 0/2] Fix and extend cpu.stat

On 2/21/25 11:41 PM, Michal Koutný wrote:
> On Sun, Feb 09, 2025 at 02:13:10PM +0800, Abel Wu <wuyun.abel@...edance.com> wrote:
>> v4:
>>   - Fixed a Kconfig dependency issue. (0day robot)
>> v3:
>>   - Dropped the cleanup patch. (Tejun)
>>   - Modified 2nd patch's commit log.
> 
> But the modification isn't the usage examples that Johannes asked about?
> 
> Also as I'm unsure about some plain PSI values (posted to v2). Maybe
> it'd be good if you could accompany the Σrun_delay with some examples
> showing what different values tell about workload.

Hi Michal, sorry for replying so late!

I am going to drop this patch for now, and will restart once found any
solid case. Thanks for your (& Tejun's & Johannes's) sightful and helpful
comments!

Best Regards,
	Abel