From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753569AbbKLTMi (ORCPT ); Thu, 12 Nov 2015 14:12:38 -0500 Received: from gum.cmpxchg.org ([85.214.110.215]:43050 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752352AbbKLTMf (ORCPT ); Thu, 12 Nov 2015 14:12:35 -0500 Date: Thu, 12 Nov 2015 14:12:20 -0500 From: Johannes Weiner To: Mel Gorman Cc: Michal Hocko , David Miller , akpm@linux-foundation.org, vdavydov@virtuozzo.com, tj@kernel.org, netdev@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/8] mm: memcontrol: account socket memory on unified hierarchy Message-ID: <20151112191220.GA25750@cmpxchg.org> References: <20151029152546.GG23598@dhcp22.suse.cz> <20151029161009.GA9160@cmpxchg.org> <20151104104239.GG29607@dhcp22.suse.cz> <20151104195037.GA6872@cmpxchg.org> <20151105144002.GB15111@dhcp22.suse.cz> <20151105205522.GA1067@cmpxchg.org> <20151105225200.GA5432@cmpxchg.org> <20151106105724.GG4390@dhcp22.suse.cz> <20151106161953.GA7813@cmpxchg.org> <20151112183620.GC14880@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151112183620.GC14880@techsingularity.net> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 12, 2015 at 06:36:20PM +0000, Mel Gorman wrote: > Bottom line, there is legimate confusion over whether cgroup controllers > are going to be enabled by default or not in the future. If they are > enabled by default, there is a non-zero cost to that and a change in > semantics that people may or may not be surprised by. Thanks for elaborating, Mel. My understanding is that this is a plain bug. I don't think anybody wants to put costs without benefits on their users. But I'll keep an eye on these reports, and I'll work with the systemd people should issues with the kernel interface materialize that would force them to enable resource control prematurely. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f41.google.com (mail-wm0-f41.google.com [74.125.82.41]) by kanga.kvack.org (Postfix) with ESMTP id 9B8CD6B0038 for ; Thu, 12 Nov 2015 14:12:37 -0500 (EST) Received: by wmww144 with SMTP id w144so531992wmw.0 for ; Thu, 12 Nov 2015 11:12:37 -0800 (PST) Received: from gum.cmpxchg.org (gum.cmpxchg.org. [85.214.110.215]) by mx.google.com with ESMTPS id ci5si20261785wjc.170.2015.11.12.11.12.35 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Nov 2015 11:12:36 -0800 (PST) Date: Thu, 12 Nov 2015 14:12:20 -0500 From: Johannes Weiner Subject: Re: [PATCH 5/8] mm: memcontrol: account socket memory on unified hierarchy Message-ID: <20151112191220.GA25750@cmpxchg.org> References: <20151029152546.GG23598@dhcp22.suse.cz> <20151029161009.GA9160@cmpxchg.org> <20151104104239.GG29607@dhcp22.suse.cz> <20151104195037.GA6872@cmpxchg.org> <20151105144002.GB15111@dhcp22.suse.cz> <20151105205522.GA1067@cmpxchg.org> <20151105225200.GA5432@cmpxchg.org> <20151106105724.GG4390@dhcp22.suse.cz> <20151106161953.GA7813@cmpxchg.org> <20151112183620.GC14880@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20151112183620.GC14880@techsingularity.net> Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Michal Hocko , David Miller , akpm@linux-foundation.org, vdavydov@virtuozzo.com, tj@kernel.org, netdev@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org On Thu, Nov 12, 2015 at 06:36:20PM +0000, Mel Gorman wrote: > Bottom line, there is legimate confusion over whether cgroup controllers > are going to be enabled by default or not in the future. If they are > enabled by default, there is a non-zero cost to that and a change in > semantics that people may or may not be surprised by. Thanks for elaborating, Mel. My understanding is that this is a plain bug. I don't think anybody wants to put costs without benefits on their users. But I'll keep an eye on these reports, and I'll work with the systemd people should issues with the kernel interface materialize that would force them to enable resource control prematurely. -- 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