From: Andrew Morton <akpm@linux-foundation.org>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
devel@openvz.org, Mel Gorman <mgorman@suse.de>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
Rik van Riel <riel@redhat.com>,
Dave Chinner <dchinner@redhat.com>,
Glauber Costa <glommer@gmail.com>
Subject: Re: [PATCH 3/5] mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim
Date: Mon, 13 Jan 2014 15:11:32 -0800 [thread overview]
Message-ID: <20140113151132.d07cbc938baf5af70f929120@linux-foundation.org> (raw)
In-Reply-To: <a39e4c57c5a8db4d6e5bb8cd070ac807c8c6fce8.1389443272.git.vdavydov@parallels.com>
On Sat, 11 Jan 2014 16:36:33 +0400 Vladimir Davydov <vdavydov@parallels.com> wrote:
> When direct reclaim is executed by a process bound to a set of NUMA
> nodes, we should scan only those nodes when possible, but currently we
> will scan kmem from all online nodes even if the kmem shrinker is NUMA
> aware. That said, binding a process to a particular NUMA node won't
> prevent it from shrinking inode/dentry caches from other nodes, which is
> not good. Fix this.
Seems right. I worry that reducing the amount of shrinking which
node-bound processes perform might affect workloads in unexpected ways.
I think I'll save this one for 3.15-rc1, OK?
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next prev parent reply other threads:[~2014-01-13 23:11 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-11 12:36 [PATCH 1/5] mm: vmscan: shrink all slab objects if tight on memory Vladimir Davydov
2014-01-11 12:36 ` [PATCH 2/5] mm: vmscan: call NUMA-unaware shrinkers irrespective of nodemask Vladimir Davydov
2014-01-11 12:36 ` [PATCH 3/5] mm: vmscan: respect NUMA policy mask when shrinking slab on direct reclaim Vladimir Davydov
2014-01-13 23:11 ` Andrew Morton [this message]
2014-01-14 6:56 ` Vladimir Davydov
2014-01-11 12:36 ` [PATCH 4/5] mm: vmscan: move call to shrink_slab() to shrink_zones() Vladimir Davydov
2014-01-13 23:13 ` Andrew Morton
2014-01-14 6:53 ` Vladimir Davydov
2014-01-11 12:36 ` [PATCH 5/5] mm: vmscan: remove shrink_control arg from do_try_to_free_pages() Vladimir Davydov
2014-01-13 23:05 ` [PATCH 1/5] mm: vmscan: shrink all slab objects if tight on memory Andrew Morton
2014-01-14 7:23 ` Vladimir Davydov
2014-01-14 22:14 ` Andrew Morton
2014-01-15 8:47 ` Vladimir Davydov
2014-01-15 9:25 ` Andrew Morton
2014-01-15 15:55 ` Vladimir Davydov
2014-01-15 22:53 ` Andrew Morton
2014-01-16 8:50 ` Vladimir Davydov
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