From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx123.postini.com [74.125.245.123]) by kanga.kvack.org (Postfix) with SMTP id BA7588D0020 for ; Fri, 11 May 2012 15:09:19 -0400 (EDT) Date: Fri, 11 May 2012 14:09:15 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH v2 04/29] slub: always get the cache from its page in kfree In-Reply-To: <4FAD6169.8090409@parallels.com> Message-ID: References: <1336758272-24284-1-git-send-email-glommer@parallels.com> <1336758272-24284-5-git-send-email-glommer@parallels.com> <4FAD531D.6030007@parallels.com> <4FAD566C.3000804@parallels.com> <4FAD585A.4070007@parallels.com> <4FAD5DA2.70803@parallels.com> <4FAD6169.8090409@parallels.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Glauber Costa Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, kamezawa.hiroyu@jp.fujitsu.com, Tejun Heo , Li Zefan , Greg Thelen , Suleiman Souhlal , Michal Hocko , Johannes Weiner , devel@openvz.org, Pekka Enberg On Fri, 11 May 2012, Glauber Costa wrote: > On 05/11/2012 03:56 PM, Christoph Lameter wrote: > > On Fri, 11 May 2012, Glauber Costa wrote: > > > > > 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? > > > /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. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org