From: "Jerome Marchand" <jmarchan@redhat.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Mel Gorman <mgorman@suse.de>, Michal Hocko <mhocko@suse.cz>,
Rik van Riel <riel@redhat.com>
Subject: [PATCH 0/2] Fix excessive swapping when memcg are enabled
Date: Thu, 31 Jul 2014 13:49:43 +0200 [thread overview]
Message-ID: <1406807385-5168-1-git-send-email-jmarchan@redhat.com> (raw)
When memory cgroups are enabled, reclaim code may force scan of
anonymous page in one memcg even when there are plenty of file pages
in other memcg. It has lead to excessive swapping in a real life
example: a virtual machine running in a memcg while there is
background I/O.
The first patch just updates an outdated comment that has bugged me
for a while but that I never bothered to update. The second patch
actually fixes the issue.
Jerome Marchand (2):
mm, vmscan: fix an outdated comment still mentioning get_scan_ratio
memcg, vmscan: Fix forced anon scan
mm/vmscan.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--
1.9.3
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2014-07-31 11:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-31 11:49 Jerome Marchand [this message]
2014-07-31 11:49 ` [PATCH 1/2] mm, vmscan: fix an outdated comment still mentioning get_scan_ratio Jerome Marchand
2014-07-31 11:49 ` [PATCH 2/2] memcg, vmscan: Fix forced scan of anonymous pages Jerome Marchand
2014-07-31 12:30 ` Michal Hocko
2014-08-01 18:45 ` Johannes Weiner
2014-08-01 18:52 ` Michal Hocko
2014-08-04 9:56 ` Jerome Marchand
2014-07-31 15:06 ` Johannes Weiner
2014-07-31 15:38 ` Rik van Riel
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=1406807385-5168-1-git-send-email-jmarchan@redhat.com \
--to=jmarchan@redhat.com \
--cc=akpm@linux-foundation.org \
--cc=hannes@cmpxchg.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mgorman@suse.de \
--cc=mhocko@suse.cz \
--cc=riel@redhat.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).