linux-kernel - Re: [PATCH v5 2/3] sched/fair: Add cfs bandwidth burst statistics

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Message-ID: <YKe9I5YfgRWvYmFn@hirez.programming.kicks-ass.net>
Date:   Fri, 21 May 2021 16:01:07 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Huaixin Chang <changhuaixin@...ux.alibaba.com>
Cc:     bsegall@...gle.com, dietmar.eggemann@....com,
        dtcccc@...ux.alibaba.com, juri.lelli@...hat.com,
        khlebnikov@...dex-team.ru, linux-kernel@...r.kernel.org,
        mgorman@...e.de, mingo@...hat.com, odin@...d.al, odin@...dal.com,
        pauld@...head.com, pjt@...gle.com, rostedt@...dmis.org,
        shanpeic@...ux.alibaba.com, tj@...nel.org,
        vincent.guittot@...aro.org, xiyou.wangcong@...il.com
Subject: Re: [PATCH v5 2/3] sched/fair: Add cfs bandwidth burst statistics

On Thu, May 20, 2021 at 08:34:18PM +0800, Huaixin Chang wrote:
> When using cfs_b and meeting with some throttled periods, users shall
> use burst buffer to allow bursty workloads. Apart from configuring some
> burst buffer and watch whether throttled periods disappears, some
> statistics on burst buffer using are also helpful. Thus expose the
> following statistics into cpu.stat file:
> 

Helpful how.. the above is a bunch of words without any actual
justification for any of this.