linux-kernel - Re: [PATCH] docs: scheduler: Update new path for the sysctl knobs

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Message-ID: <CAJy-Am=Krin68+TpCw8Tc3q7z5EfCDbcS_0HqXHj29nhbG5RaA@mail.gmail.com>
Date:   Wed, 17 Aug 2022 10:51:12 +0800
From:   Alex Shi <seakeel@...il.com>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Alex Shi <alexs@...nel.org>, Jonathan Corbet <corbet@....net>,
        peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH] docs: scheduler: Update new path for the sysctl knobs

On Tue, Aug 16, 2022 at 8:19 PM Lukasz Luba <lukasz.luba@....com> wrote:
>
> Add missing update for the documentation bit of some scheduler knob.
> The knobs have been moved to /debug/sched/ location (with adjusted names).
>
> Signed-off-by: Lukasz Luba <lukasz.luba@....com>

Reviewed-by: Alex Shi <alexs@...nel.org>

> ---
>  Documentation/scheduler/sched-design-CFS.rst                    | 2 +-
>  Documentation/translations/zh_CN/scheduler/sched-design-CFS.rst | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/scheduler/sched-design-CFS.rst b/Documentation/scheduler/sched-design-CFS.rst
> index 59b2d1fb4dc4..03db55504515 100644
> --- a/Documentation/scheduler/sched-design-CFS.rst
> +++ b/Documentation/scheduler/sched-design-CFS.rst
> @@ -94,7 +94,7 @@ other HZ detail.  Thus the CFS scheduler has no notion of "timeslices" in the
>  way the previous scheduler had, and has no heuristics whatsoever.  There is
>  only one central tunable (you have to switch on CONFIG_SCHED_DEBUG):
>
> -   /proc/sys/kernel/sched_min_granularity_ns
> +   /sys/kernel/debug/sched/min_granularity_ns
>
>  which can be used to tune the scheduler from "desktop" (i.e., low latencies) to
>  "server" (i.e., good batching) workloads.  It defaults to a setting suitable
> diff --git a/Documentation/translations/zh_CN/scheduler/sched-design-CFS.rst b/Documentation/translations/zh_CN/scheduler/sched-design-CFS.rst
> index 26b0f36f793d..3076402406c4 100644
> --- a/Documentation/translations/zh_CN/scheduler/sched-design-CFS.rst
> +++ b/Documentation/translations/zh_CN/scheduler/sched-design-CFS.rst
> @@ -80,7 +80,7 @@ p->se.vruntime。一旦p->se.vruntime变得足够大，其它的任务将成为
>  CFS使用纳秒粒度的计时，不依赖于任何jiffies或HZ的细节。因此CFS并不像之前的调度器那样
>  有“时间片”的概念，也没有任何启发式的设计。唯一可调的参数（你需要打开CONFIG_SCHED_DEBUG）是：
>
> -   /proc/sys/kernel/sched_min_granularity_ns
> +   /sys/kernel/debug/sched/min_granularity_ns
>
>  它可以用来将调度器从“桌面”模式（也就是低时延）调节为“服务器”（也就是高批处理）模式。
>  它的默认设置是适合桌面的工作负载。SCHED_BATCH也被CFS调度器模块处理。
> --
> 2.17.1
>