On Fri, 11 May 2012, Glauber Costa wrote:

On 05/11/2012 03:56 PM, Christoph Lameter wrote:

quoted

On Fri, 11 May 2012, Glauber Costa wrote:

quoted

So we don't mix pages from multiple memcgs in the same cache - we believe
that
would be too confusing.

Well subsystem create caches and other things that are shared between
multiple processes. How can you track that?

Each process that belongs to a memcg triggers the creation of a new child kmem
cache.

I see that. But there are other subsystems from slab allocators that do
the same. There are also objects that may be used by multiple processes.
F.e what about shm?

quoted

quoted

/proc/slabinfo reflects this information, by listing the memcg-specific
slabs.

What about /sys/kernel/slab/*?

From the PoV of the global system, what you'll see is something like:
dentry , dentry(2:memcg1), dentry(2:memcg2), etc.

Hmmm.. Would be better to have a hierachy there. /proc/slabinfo is more
legacy.

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