Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756042AbYKEDee (ORCPT ); Tue, 4 Nov 2008 22:34:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754439AbYKEDeX (ORCPT ); Tue, 4 Nov 2008 22:34:23 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:59053 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754307AbYKEDeW (ORCPT ); Tue, 4 Nov 2008 22:34:22 -0500 Message-ID: <49111394.1070304@cn.fujitsu.com> Date: Wed, 05 Nov 2008 11:31:32 +0800 From: Li Zefan User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Dhaval Giani CC: Balbir Singh , bharata@linux.vnet.ibm.com, KAMEZAWA Hiroyuki , Paul Menage , linux-kernel@vger.kernel.org, Srivatsa Vaddagiri , Peter Zijlstra , Ingo Molnar Subject: Re: [PATCH] Add hierarchical accounting to cpu accounting controller References: <20081023054335.GC3280@in.ibm.com> <6599ad830810230849x71961a0asd7f00d3baa2f2271@mail.gmail.com> <20081024050830.GA4387@in.ibm.com> <6599ad830810241037h575ec17bgb43f750d99bd1518@mail.gmail.com> <20081025060157.GA4614@in.ibm.com> <6599ad830810250838q3f96644bm6dfee8ba9f35dfa3@mail.gmail.com> <20081027101703.e954071d.kamezawa.hiroyu@jp.fujitsu.com> <20081027044319.GA4386@in.ibm.com> <661de9470810262357y6c560facl87dcaea3ce35e3ac@mail.gmail.com> <49057ADD.1050705@cn.fujitsu.com> <20081030171622.GA19872@linux.vnet.ibm.com> In-Reply-To: <20081030171622.GA19872@linux.vnet.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 859 Lines: 19 >> cpuacct was designed to count cpu usage of a group of tasks, and now some people >> want it to also take child group's usage into account, so I think this is a feature >> request but not a bug fix. >> > > I disagree. The child is a part of the parent's hierarchy, and therefore > its usage should reflect in the parent's usage. > In memcg the child's usage doesn't reflect in its parent's usage. ;) Balbir just posted a patchset to add hierarchy support in memcg, and added memory.feature to disable/enable this feature. Is it for performance only or also for keeping the user interface/behavior unchanged? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/