From: Andrew Morton <akpm@linux-foundation.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Robert Haas <robertmhaas@gmail.com>,
Josh Berkus <josh@agliodbs.com>,
Andres Freund <andres@2ndquadrant.com>,
Christoph Lameter <cl@linux.com>, Linux-MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Michal Hocko <mhocko@suse.cz>
Subject: Re: [PATCH 0/2] Disable zone_reclaim_mode by default v2
Date: Fri, 18 Apr 2014 13:05:43 -0700 [thread overview]
Message-ID: <20140418130543.8619064c0e5d26cd914c4c3c@linux-foundation.org> (raw)
In-Reply-To: <1396945380-18592-1-git-send-email-mgorman@suse.de>
On Tue, 8 Apr 2014 09:22:58 +0100 Mel Gorman <mgorman@suse.de> wrote:
> Changelog since v1
> o topology comment updates
>
> When it was introduced, zone_reclaim_mode made sense as NUMA distances
> punished and workloads were generally partitioned to fit into a NUMA
> node. NUMA machines are now common but few of the workloads are NUMA-aware
> and it's routine to see major performance due to zone_reclaim_mode being
> enabled but relatively few can identify the problem.
>
> Those that require zone_reclaim_mode are likely to be able to detect when
> it needs to be enabled and tune appropriately so lets have a sensible
> default for the bulk of users.
>
This patchset conflicts with
commit 70ef57e6c22c3323dce179b7d0d433c479266612
Author: Michal Hocko <mhocko@suse.cz>
AuthorDate: Mon Apr 7 15:37:01 2014 -0700
Commit: Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Mon Apr 7 16:35:50 2014 -0700
mm: exclude memoryless nodes from zone_reclaim
It was pretty simple to resolve, but please check that I didn't miss
anything.
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next prev parent reply other threads:[~2014-04-18 20:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-08 8:22 [PATCH 0/2] Disable zone_reclaim_mode by default v2 Mel Gorman
2014-04-08 8:22 ` [PATCH 1/2] mm: Disable zone_reclaim_mode by default Mel Gorman
2014-04-08 8:23 ` [PATCH 2/2] mm: page_alloc: Do not cache reclaim distances Mel Gorman
2014-04-18 20:05 ` Andrew Morton [this message]
2014-04-18 20:48 ` [PATCH 0/2] Disable zone_reclaim_mode by default v2 John Stoffel
2014-04-20 20:59 ` Mel Gorman
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