linux-kernel - Re: Sv: [PATCH] mm/memcontrol: add memory.peak in cgroup root

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Message-ID: <Y/TudzUxEDwn6MHX@dhcp22.suse.cz>
Date:   Tue, 21 Feb 2023 17:16:55 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Christopher Wong <Christopher.Wong@...s.com>
Cc:     Matthew Chae <Matthew.Chae@...s.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kernel <kernel@...s.com>, Muchun Song <muchun.song@...ux.dev>,
        "cgroups@...r.kernel.org" <cgroups@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Sv: [PATCH] mm/memcontrol: add memory.peak in cgroup root

On Tue 21-02-23 16:13:14, Christopher Wong wrote:
> Hi Michal,
> 
> Thanks for the quick response! I think we are just trying to
> get the same value that was available for us in cgroup v1
> memory.max_usage_in_bytes. I guess this value also is incomplete for
> representing the system memory usage.

Correct.

> Is it due the incompleteness that the memory.peak has been left out in
> the root of cgroup v2?

I think so but I do not remember 100%. You might want to look into email
archives.
-- 
Michal Hocko
SUSE Labs