From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx162.postini.com [74.125.245.162]) by kanga.kvack.org (Postfix) with SMTP id 017746B005A for ; Wed, 25 Jul 2012 14:18:13 -0400 (EDT) Message-ID: <501037B0.7060602@parallels.com> Date: Wed, 25 Jul 2012 22:15:12 +0400 From: Glauber Costa MIME-Version: 1.0 Subject: Re: [PATCH v4 24/25] memcg/slub: shrink dead caches References: <1340015298-14133-1-git-send-email-glommer@parallels.com> <1340015298-14133-25-git-send-email-glommer@parallels.com> <5009D8D8.6040509@parallels.com> In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Lameter Cc: linux-mm@kvack.org, Pekka Enberg , David Rientjes , cgroups@vger.kernel.org, devel@openvz.org, kamezawa.hiroyu@jp.fujitsu.com, linux-kernel@vger.kernel.org, Frederic Weisbecker , Suleiman Souhlal , Pekka Enberg , Michal Hocko , Johannes Weiner On 07/25/2012 07:23 PM, Christoph Lameter wrote: > On Fri, 20 Jul 2012, Glauber Costa wrote: > >>> This is the same btw in SLAB which keeps objects in per cpu caches and >>> keeps empty slab pages on special queues. >>> >>>> This patch marks all memcg caches as dead. kmem_cache_shrink is called >>>> for the ones who are not yet dead - this will force internal cache >>>> reorganization, and then all references to empty pages will be removed. >>> >>> You need to call this also for slab to drain the caches and free the pages >>> on the empty list. >>> >> Doesn't the SLAB have a time-based reaper for that? > > Yes but it will take a couple of minutes to drain the caches. > You might have seen in my last submission that included this in the slab as well. -- 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/ . Don't email: email@kvack.org