linux-kernel - Re: [RFC PATCH v4 0/3] memcg weighted interleave mempolicy control

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZU3ydS1Puv2OHgiE@tiehlicka>
Date:   Fri, 10 Nov 2023 10:05:57 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Gregory Price <gregory.price@...verge.com>
Cc:     Gregory Price <gourry.memverge@...il.com>,
        linux-kernel@...r.kernel.org, linux-cxl@...r.kernel.org,
        linux-mm@...ck.org, cgroups@...r.kernel.org,
        linux-doc@...r.kernel.org, ying.huang@...el.com,
        akpm@...ux-foundation.org, tj@...nel.org, lizefan.x@...edance.com,
        hannes@...xchg.org, corbet@....net, roman.gushchin@...ux.dev,
        shakeelb@...gle.com, muchun.song@...ux.dev
Subject: Re: [RFC PATCH v4 0/3] memcg weighted interleave mempolicy control

On Thu 09-11-23 11:34:01, Gregory Price wrote:
[...]
> Anyway, summarizing:  After a bit of reading, this does seem to map
> better to the "accounting consumption" subsystem than the "constrain"
> subsystem. However, if you think it's better suited for cpuset, I'm
> happy to push in that direction.

Maybe others see it differently but I stick with my previous position.
Memcg is not a great fit for reasons already mentioned - most notably
that the controller doesn't control the allocation but accounting what
has been already allocated. Cpusets on the other hand constrains the
allocations and that is exactly what you want to achieve. 
-- 
Michal Hocko
SUSE Labs