From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Down <chris-6Bi1550iOqEnzZ6mRAm98g@public.gmane.org>
Subject: Re: [RFC 0/7] Introduce memory allocation speed throttle in memcg
Date: Fri, 4 Jun 2021 12:51:00 +0100
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To: yulei zhang <yulei.kernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Shakeel Butt <shakeelb-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Zefan Li <lizefan.x-EC8Uxl6Npydl57MIdRCFDg@public.gmane.org>, Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>, Christian Brauner <christian-STijNZzMWpgWenYVfaLwtA@public.gmane.org>, Cgroups <cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, benbjiang-1Nz4purKYjRBDgjK7y7TUQ@public.gmane.org, Wanpeng Li <kernellwp-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Yulei Zhang <yuleixzhang-1Nz4purKYjRBDgjK7y7TUQ@public.gmane.org>, Linux MM <linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>, Michal Hocko <mhocko-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Roman Gushchin <guro-b10kYP2dOMg@public.gmane.org>

yulei zhang writes:
>> Having a speed throttle is a very primitive knob: it's hard to know what the
>> correct values are for a user. That's one of the reasons why we've moved away
>> from that kind of tunable for blkio.
>>
>> Ultimately, if you want work-conserving behaviour, why not use memory.low?
>
>Thanks. But currently low and high are for cgroup v2 setting, do you
>think we'd better
>extend the same mechanism to cgroup v1?

The cgroup v1 interface is frozen and in pure maintenance mode -- we're not 
adding new features there and haven't done so for some time.