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

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Message-ID: <Y/jRibeqSlO1Z55I@dhcp22.suse.cz>
Date:   Fri, 24 Feb 2023 16:02:33 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Matthew Chae <matthewc@...s.com>
Cc:     Matthew Chae <Matthew.Chae@...s.com>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Michal Koutný <mkoutny@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        kernel <kernel@...s.com>,
        Christopher Wong <Christopher.Wong@...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: [PATCH] mm/memcontrol: add memory.peak in cgroup root

On Fri 24-02-23 15:18:49, Matthew Chae wrote:
> Hi Michal
> 
> Thank you for helping me gain full insight.
> It looks like there is no proper way to get the peak memory usage recorded
> without adding any overhead to the system and for all users. But I fully
> understand what you kindly explained. Basically, having low memory left
> doesn't mean a bad situation for the system, So checking the peak memory
> doesn't mean a lot and is not necessary.

You might find https://www.pdl.cmu.edu/ftp/NVM/tmo_asplos22.pdf
interesting and helpful
-- 
Michal Hocko
SUSE Labs