From: Rik van Riel <riel@redhat.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>, George Spelvin <linux@horizon.com>,
Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de>,
Tomas Racek <tracek@redhat.com>, Jan Kara <jack@suse.cz>,
Dave Hansen <dave@linux.vnet.ibm.com>,
Josh Boyer <jwboyer@gmail.com>,
Valdis Kletnieks <Valdis.Kletnieks@vt.edu>,
Jiri Slaby <jslaby@suse.cz>,
Thorsten Leemhuis <fedora@leemhuis.info>,
Zdenek Kabelac <zkabelac@redhat.com>,
Bruno Wolff III <bruno@wolff.to>, linux-mm <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kswapd craziness in 3.7
Date: Tue, 27 Nov 2012 16:16:52 -0500 [thread overview]
Message-ID: <50B52DC4.5000109@redhat.com> (raw)
In-Reply-To: <CA+55aFywygqWUBNWtZYa+vk8G0cpURZbFdC7+tOzyWk6tLi=WA@mail.gmail.com>
On 11/27/2012 03:58 PM, Linus Torvalds wrote:
> Note that in the meantime, I've also applied (through Andrew) the
> patch that reverts commit c654345924f7 (see commit 82b212f40059
> 'Revert "mm: remove __GFP_NO_KSWAPD"').
>
> I wonder if that revert may be bogus, and a result of this same issue.
> Maybe that revert should be reverted, and replaced with your patch?
>
> Mel? Zdenek? What's the status here?
Mel posted several patches to fix the kswapd issue. This one is
slightly more risky than the outright revert, but probably preferred
from a performance point of view:
https://lkml.org/lkml/2012/11/12/151
It works by skipping the kswapd wakeup for THP allocations, only
if compaction is deferred or contended.
--
All rights reversed
next prev parent reply other threads:[~2012-11-27 21:18 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-27 20:48 kswapd craziness in 3.7 Johannes Weiner
2012-11-27 20:48 ` [patch] mm: vmscan: fix kswapd endless loop on higher order allocation Johannes Weiner
2012-11-27 20:58 ` kswapd craziness in 3.7 Linus Torvalds
2012-11-27 21:16 ` Rik van Riel [this message]
2012-11-27 21:49 ` Johannes Weiner
2012-11-27 22:02 ` Rik van Riel
2012-11-27 22:26 ` Johannes Weiner
2012-11-27 23:19 ` Linus Torvalds
2012-11-28 10:13 ` Mel Gorman
2012-11-28 10:51 ` Thorsten Leemhuis
2012-11-28 16:42 ` Mel Gorman
2012-11-28 22:52 ` Andrew Morton
2012-11-28 23:54 ` Mel Gorman
2012-11-29 0:14 ` Andrew Morton
2012-11-29 15:30 ` Thorsten Leemhuis
2012-11-29 17:05 ` Johannes Weiner
2012-11-30 12:39 ` Thorsten Leemhuis
2012-12-01 0:45 ` Johannes Weiner
2012-12-03 8:30 ` Thorsten Leemhuis
2012-12-03 13:08 ` Fedora repo (was: Re: kswapd craziness in 3.7) Borislav Petkov
2012-12-03 19:42 ` kswapd craziness in 3.7 Johannes Weiner
2012-12-04 21:42 ` Johannes Weiner
2012-12-05 3:01 ` Bruno Wolff III
2012-12-06 17:37 ` Bruno Wolff III
2012-12-06 19:31 ` Linus Torvalds
2012-12-06 19:43 ` Rik van Riel
2012-12-06 20:23 ` Johannes Weiner
2012-12-06 20:32 ` Rik van Riel
2012-12-08 12:06 ` Zlatko Calusic
2012-12-08 21:22 ` Zlatko Calusic
2012-12-09 1:01 ` Linus Torvalds
2012-12-09 21:59 ` Zdenek Kabelac
2012-12-10 11:03 ` Mel Gorman
2012-12-10 16:39 ` Johannes Weiner
2012-12-10 18:01 ` Mel Gorman
2012-12-10 18:33 ` Zlatko Calusic
2012-12-10 19:13 ` Linus Torvalds
2012-12-10 20:35 ` Zlatko Calusic
2012-12-10 21:28 ` Linus Torvalds
2012-12-10 21:42 ` Borislav Petkov
2012-12-10 21:47 ` Linus Torvalds
2012-12-10 21:54 ` Borislav Petkov
2012-12-10 22:15 ` Zlatko Calusic
2012-12-10 23:27 ` Hugh Dickins
2012-12-11 0:19 ` Zlatko Calusic
2012-12-11 21:56 ` Zlatko Calusic
2012-12-19 22:24 ` Zlatko Calusic
2012-12-10 18:29 ` Zlatko Calusic
2012-12-06 8:09 ` Thorsten Leemhuis
2012-11-27 21:29 ` Johannes Weiner
2012-11-28 13:35 ` Zdenek Kabelac
2012-11-28 14:04 ` Jiri Slaby
2012-11-28 9:45 ` Mel Gorman
2012-12-03 15:23 ` Zdenek Kabelac
2012-12-03 19:18 ` Johannes Weiner
2012-12-04 9:05 ` Zdenek Kabelac
2012-12-04 9:15 ` Jiri Slaby
2012-12-04 16:11 ` Johannes Weiner
2012-12-04 16:22 ` Jiri Slaby
2012-12-04 19:50 ` Johannes Weiner
2012-12-08 10:35 ` Jiri Slaby
2012-12-04 16:15 ` Johannes Weiner
2012-12-06 13:51 ` Zdenek Kabelac
2012-12-03 13:14 ` Jiri Slaby
2012-12-04 8:55 ` Jiri Slaby
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