From: Dave Chinner <david@fromorbit.com>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: dchinner@redhat.com, hannes@cmpxchg.org, mhocko@suse.cz,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, cgroups@vger.kernel.org, devel@openvz.org,
glommer@openvz.org, glommer@gmail.com,
Glauber Costa <gloomer@openvz.org>, Mel Gorman <mgorman@suse.de>,
Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH v13 13/16] vmscan: take at least one pass with shrinkers
Date: Tue, 10 Dec 2013 15:18:26 +1100 [thread overview]
Message-ID: <20131210041826.GB31386@dastard> (raw)
In-Reply-To: <5287164773f8aade33ce17f3c91546c6e1afaf85.1386571280.git.vdavydov@parallels.com>
On Mon, Dec 09, 2013 at 12:05:54PM +0400, Vladimir Davydov wrote:
> From: Glauber Costa <glommer@openvz.org>
>
> In very low free kernel memory situations, it may be the case that we
> have less objects to free than our initial batch size. If this is the
> case, it is better to shrink those, and open space for the new workload
> then to keep them and fail the new allocations.
>
> In particular, we are concerned with the direct reclaim case for memcg.
> Although this same technique can be applied to other situations just as
> well, we will start conservative and apply it for that case, which is
> the one that matters the most.
This should be at the start of the series.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
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next prev parent reply other threads:[~2013-12-10 4:18 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-09 8:05 [PATCH v13 00/16] kmemcg shrinkers Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 01/16] memcg: make cache index determination more robust Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 02/16] memcg: consolidate callers of memcg_cache_id Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 03/16] memcg: move initialization to memcg creation Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 04/16] memcg: move memcg_caches_array_size() function Vladimir Davydov
2013-12-10 8:04 ` Glauber Costa
2013-12-09 8:05 ` [PATCH v13 05/16] vmscan: move call to shrink_slab() to shrink_zones() Vladimir Davydov
2013-12-10 8:10 ` Glauber Costa
2013-12-09 8:05 ` [PATCH v13 06/16] vmscan: remove shrink_control arg from do_try_to_free_pages() Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 07/16] vmscan: call NUMA-unaware shrinkers irrespective of nodemask Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 08/16] mm: list_lru: require shrink_control in count, walk functions Vladimir Davydov
2013-12-10 1:36 ` Dave Chinner
2013-12-09 8:05 ` [PATCH v13 09/16] fs: consolidate {nr,free}_cached_objects args in shrink_control Vladimir Davydov
2013-12-10 1:38 ` Dave Chinner
2013-12-09 8:05 ` [PATCH v13 10/16] vmscan: shrink slab on memcg pressure Vladimir Davydov
2013-12-10 2:11 ` Dave Chinner
2013-12-09 8:05 ` [PATCH v13 11/16] mm: list_lru: add per-memcg lists Vladimir Davydov
2013-12-10 5:00 ` Dave Chinner
2013-12-10 10:05 ` Vladimir Davydov
2013-12-12 1:40 ` Dave Chinner
2013-12-12 9:50 ` Vladimir Davydov
2013-12-12 20:24 ` Vladimir Davydov
2013-12-14 20:03 ` Vladimir Davydov
2013-12-12 20:48 ` Glauber Costa
2013-12-09 8:05 ` [PATCH v13 12/16] fs: mark list_lru based shrinkers memcg aware Vladimir Davydov
2013-12-10 4:17 ` Dave Chinner
2013-12-11 11:08 ` Steven Whitehouse
2013-12-09 8:05 ` [PATCH v13 13/16] vmscan: take at least one pass with shrinkers Vladimir Davydov
2013-12-10 4:18 ` Dave Chinner [this message]
2013-12-10 11:50 ` Vladimir Davydov
2013-12-10 12:38 ` Glauber Costa
2013-12-09 8:05 ` [PATCH v13 14/16] vmpressure: in-kernel notifications Vladimir Davydov
2013-12-10 8:12 ` Glauber Costa
2013-12-09 8:05 ` [PATCH v13 15/16] memcg: reap dead memcgs upon global memory pressure Vladimir Davydov
2013-12-09 8:05 ` [PATCH v13 16/16] memcg: flush memcg items upon memcg destruction Vladimir Davydov
2013-12-10 8:02 ` [PATCH v13 00/16] kmemcg shrinkers Glauber Costa
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