linux-kernel - Re: 答复: PROBLEM: cgroup cost too much memory when transfer small files to tmpfs

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Date:   Fri, 24 Jul 2020 13:35:30 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     jingrui <jingrui@...wei.com>
Cc:     "tj@...nel.org" <tj@...nel.org>, Lizefan <lizefan@...wei.com>,
        "hannes@...xchg.org" <hannes@...xchg.org>,
        "vdavydov.dev@...il.com" <vdavydov.dev@...il.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "cgroups@...r.kernel.org" <cgroups@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        caihaomin <caihaomin@...wei.com>,
        "Weiwei (N)" <wick.wei@...wei.com>
Subject: Re: 答复: PROBLEM: cgroup cost too
 much memory when transfer small files to tmpfs

On Fri 24-07-20 09:35:26, jingrui wrote:
> 
> On Friday, July 24, 2020 3:55 PM, Michal Hocko wrote:
> 
> > What is the reason to run under !root cgroup in those sessions if you do not care about accounting anyway? 
> 
> The systemd not support run those sessions under root cgroup, disable
> pam-systemd will not create session/cgroup, but this is not safe and make
> systemd-logind not work.

Could you be more specific please?
-- 
Michal Hocko
SUSE Labs