From: Glauber Costa <glommer@parallels.com>
To: linux-mm@kvack.org
Cc: cgroups@vger.kernel.org, Mel Gorman <mgorman@suse.de>,
Tejun Heo <tj@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Michal Hocko <mhocko@suse.cz>,
Johannes Weiner <hannes@cmpxchg.org>,
kamezawa.hiroyu@jp.fujitsu.com, Christoph Lameter <cl@linux.com>,
David Rientjes <rientjes@google.com>,
Pekka Enberg <penberg@kernel.org>,
devel@openvz.org, Glauber Costa <glommer@parallels.com>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Suleiman Souhlal <suleiman@google.com>
Subject: [PATCH v4 19/19] Add slab-specific documentation about the kmem controller
Date: Fri, 12 Oct 2012 17:41:13 +0400 [thread overview]
Message-ID: <1350049273-17213-20-git-send-email-glommer@parallels.com> (raw)
In-Reply-To: <1350049273-17213-1-git-send-email-glommer@parallels.com>
Signed-off-by: Glauber Costa <glommer@parallels.com>
CC: Christoph Lameter <cl@linux.com>
CC: Pekka Enberg <penberg@cs.helsinki.fi>
CC: Michal Hocko <mhocko@suse.cz>
CC: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
CC: Johannes Weiner <hannes@cmpxchg.org>
CC: Suleiman Souhlal <suleiman@google.com>
CC: Tejun Heo <tj@kernel.org>
---
Documentation/cgroups/memory.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index dd15be8..95e4809 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -300,6 +300,13 @@ to trigger slab reclaim when those limits are reached.
kernel memory, we prevent new processes from being created when the kernel
memory usage is too high.
+* slab pages: pages allocated by the SLAB or SLUB allocator are tracked. A copy
+of each kmem_cache is created everytime the cache is touched by the first time
+from inside the memcg. The creation is done lazily, so some objects can still be
+skipped while the cache is being created. All objects in a slab page should
+belong to the same memcg. This only fails to hold when a task is migrated to a
+different memcg during the page allocation by the cache.
+
* sockets memory pressure: some sockets protocols have memory pressure
thresholds. The Memory Controller allows them to be controlled individually
per cgroup, instead of globally.
--
1.7.11.4
--
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next prev parent reply other threads:[~2012-10-12 13:42 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-12 13:40 [PATCH v4 00/19] slab accounting for memcg Glauber Costa
2012-10-12 13:40 ` [PATCH v4 01/19] slab: Ignore internal flags in cache creation Glauber Costa
2012-10-12 13:40 ` [PATCH v4 02/19] move slabinfo processing to slab_common.c Glauber Costa
2012-10-12 13:40 ` [PATCH v4 03/19] move print_slabinfo_header " Glauber Costa
2012-10-12 13:40 ` [PATCH v4 04/19] sl[au]b: process slabinfo_show in common code Glauber Costa
2012-10-12 13:40 ` [PATCH v4 05/19] slab: don't preemptively remove element from list in cache destroy Glauber Costa
2012-10-12 13:41 ` [PATCH v4 06/19] slab/slub: struct memcg_params Glauber Costa
2012-10-12 13:41 ` [PATCH v4 07/19] consider a memcg parameter in kmem_create_cache Glauber Costa
2012-10-12 13:41 ` [PATCH v4 08/19] Allocate memory for memcg caches whenever a new memcg appears Glauber Costa
2012-10-12 13:41 ` [PATCH v4 09/19] memcg: infrastructure to match an allocation to the right cache Glauber Costa
2012-10-12 13:41 ` [PATCH v4 10/19] memcg: skip memcg kmem allocations in specified code regions Glauber Costa
2012-10-12 13:41 ` [PATCH v4 11/19] sl[au]b: always get the cache from its page in kfree Glauber Costa
2012-10-12 13:41 ` [PATCH v4 12/19] sl[au]b: Allocate objects from memcg cache Glauber Costa
2012-10-12 13:41 ` [PATCH v4 13/19] memcg: destroy memcg caches Glauber Costa
2012-10-12 13:41 ` [PATCH v4 14/19] memcg/sl[au]b Track all the memcg children of a kmem_cache Glauber Costa
2012-10-12 13:41 ` [PATCH v4 15/19] memcg/sl[au]b: shrink dead caches Glauber Costa
2012-10-12 13:41 ` [PATCH v4 16/19] Aggregate memcg cache values in slabinfo Glauber Costa
2012-10-12 13:41 ` [PATCH v4 17/19] slab: propagate tunables values Glauber Costa
2012-10-12 13:41 ` [PATCH v4 18/19] slub: slub-specific propagation changes Glauber Costa
2012-10-12 13:41 ` Glauber Costa [this message]
2012-10-18 11:38 ` [PATCH v4 00/19] slab accounting for memcg Glauber Costa
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