From: Chris Down <chris@chrisdown.name>
To: Michal Hocko <mhocko@kernel.org>
Cc: Hui Zhu <teawater@gmail.com>,
hannes@cmpxchg.org, vdavydov.dev@gmail.com,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC] memcg: Add swappiness to cgroup2
Date: Mon, 6 Jan 2020 13:24:36 +0000 [thread overview]
Message-ID: <20200106132436.GC361303@chrisdown.name> (raw)
In-Reply-To: <20200106131020.GC9198@dhcp22.suse.cz>
Michal Hocko writes:
>I am not really sure I agree here though. Swappiness has been
>traditionally more about workload because it has been believed that it
>is a preference of the workload whether the anonymous or disk based
>memory is more important. Whether this is a good interface is debatable
>of course but time has shown that it is extremely hard to tune.
Sure, it can theoretically be hardware- and workload-specific -- I don't think
we disagree here. The reason I suggest it's a generally hardware-specific
tunable rather than a workload-specific tunable is it's pretty rare to see
anyone who's meaningfully used it for workload-specific tuning :-)
next prev parent reply other threads:[~2020-01-06 13:24 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-25 5:36 [RFC] memcg: Add swappiness to cgroup2 Hui Zhu
2019-12-25 14:05 ` Chris Down
2019-12-26 6:56 ` teawater
2020-01-03 9:48 ` Michal Koutný
2020-01-06 13:10 ` Michal Hocko
2020-01-06 13:24 ` Chris Down [this message]
2019-12-31 23:16 ` Andrew Morton
2020-01-02 1:44 ` teawater
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200106132436.GC361303@chrisdown.name \
--to=chris@chrisdown.name \
--cc=akpm@linux-foundation.org \
--cc=cgroups@vger.kernel.org \
--cc=hannes@cmpxchg.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mhocko@kernel.org \
--cc=teawater@gmail.com \
--cc=vdavydov.dev@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).