Re: [PATCH 10/10] memcg: Document kernel memory accounting.
From: Randy Dunlap <hidden>
Date: 2012-02-27 23:05:36
Also in:
linux-mm
On 02/27/2012 02:58 PM, Suleiman Souhlal wrote:
quoted hunk ↗ jump to hunk
Signed-off-by: Suleiman Souhlal <redacted> --- Documentation/cgroups/memory.txt | 44 +++++++++++++++++++++++++++++++++++-- 1 files changed, 41 insertions(+), 3 deletions(-)diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 4c95c00..64c6cc8 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt
+2.7.1.1 Slab memory accounting + +Slab gets accounted on a per-page basis, which is done by using per-cgroup +kmem_caches. These per-cgroup kmem_caches get created on-demand, the first +time a specific kmem_cache gets used by a cgroup. + +Slab memory that cannot be attributed to a cgroup gets charged to the root +cgroup. + +A per-cgroup kmem_cache is named like the original, with the cgroup's name +in parethesis.
parentheses.
+ +When a cgroup is destroyed, all its kmem_caches get migrated to the root +cgroup, and "dead" is appended to their name, to indicate that they are not +going to be used for new allocations. +These dead caches automatically get removed once there are no more active +slab objects in them. +
-- ~Randy