From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx175.postini.com [74.125.245.175]) by kanga.kvack.org (Postfix) with SMTP id DB87C6B00F5 for ; Mon, 11 Jun 2012 05:23:15 -0400 (EDT) Received: by dakp5 with SMTP id p5so6297330dak.14 for ; Mon, 11 Jun 2012 02:23:15 -0700 (PDT) Date: Mon, 11 Jun 2012 02:23:13 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH -V6 07/14] memcg: Add HugeTLB extension In-Reply-To: <4FD56C19.4060307@jp.fujitsu.com> Message-ID: References: <1334573091-18602-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <1334573091-18602-8-git-send-email-aneesh.kumar@linux.vnet.ibm.com> <20120527202848.GC7631@skywalker.linux.vnet.ibm.com> <87lik920h8.fsf@skywalker.in.ibm.com> <20120608160612.dea6d1ce.akpm@linux-foundation.org> <4FD56C19.4060307@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Kamezawa Hiroyuki Cc: Andrew Morton , "Aneesh Kumar K.V" , linux-mm@kvack.org, mgorman@suse.de, dhillf@gmail.com, aarcange@redhat.com, mhocko@suse.cz, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, Ying Han On Mon, 11 Jun 2012, Kamezawa Hiroyuki wrote: > Now, I think... > > 1. I need to agree that overhead is _not_ negligible. > > 2. THP should be the way rather than hugetlb for my main target platform. > (shmem/tmpfs should support THP. we need study.) > user-experience should be fixed by THP+tmpfs+memcg. > > 3. It seems Aneesh decided to have independent hugetlb cgroup. > > So, now, I admit to have independent hugetlb cgroup. > Other opinions ? > I suggested the seperate controller in the review of the patchset so I obviously agree with your conclusion. I don't think we should account for hugetlb pages in memory.usage_in_bytes and enforce memory.limit_in_bytes since 512 4K pages is not the same as 1 2M page which may be a sacred resource if fragmentation is high. Many thanks to Aneesh for continuing to update the patchset and working toward a resolution on this, I love the direction its taking. -- 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