linux-kernel - Re: [RFC 0/2] Introduce cgroup.top interface

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Date:   Thu, 25 Aug 2022 17:17:09 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Lu Jialin <lujialin4@...wei.com>
Cc:     Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <songmuchun@...edance.com>,
        Xiu Jianfeng <xiujianfeng@...wei.com>, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC 0/2] Introduce cgroup.top interface

Hello,

On Fri, Aug 26, 2022 at 09:15:01AM +0800, Lu Jialin wrote:
> Cgroup is used to organize and manage resource available processes.
> Currently there are no handy tool for gathering reousrce usage
> information for each and every child cgroups, makes it hard to detect
> resource outage and debug resource issues.
> 
> To overcome this, we present the cgroup.top interface. Just like the
> top command, user is able to easily gather resource usage information
> , allowing user to detect and respond to resource outage in child
> cgroups

I don't think this is something we want build into the kernel. Maybe what
you want is something similar to below?

  https://github.com/facebookincubator/below

Thanks.

-- 
tejun