Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751975AbZL0Mrn (ORCPT ); Sun, 27 Dec 2009 07:47:43 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751794AbZL0Mrm (ORCPT ); Sun, 27 Dec 2009 07:47:42 -0500 Received: from e23smtp06.au.ibm.com ([202.81.31.148]:33225 "EHLO e23smtp06.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751704AbZL0Mrm (ORCPT ); Sun, 27 Dec 2009 07:47:42 -0500 Date: Sun, 27 Dec 2009 18:17:32 +0530 From: Balbir Singh To: "Kirill A. Shutemov" Cc: containers@lists.linux-foundation.org, linux-mm@kvack.org, Paul Menage , Li Zefan , Andrew Morton , KAMEZAWA Hiroyuki , Pavel Emelyanov , Dan Malek , Vladislav Buzov , Daisuke Nishimura , Alexander Shishkin , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 0/4] cgroup notifications API and memory thresholds Message-ID: <20091227124732.GA3601@balbir.in.ibm.com> Reply-To: balbir@linux.vnet.ibm.com References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1617 Lines: 39 * Kirill A. Shutemov [2009-12-27 04:08:58]: > This patchset introduces eventfd-based API for notifications in cgroups and > implements memory notifications on top of it. > > It uses statistics in memory controler to track memory usage. > > Output of time(1) on building kernel on tmpfs: > > Root cgroup before changes: > make -j2 506.37 user 60.93s system 193% cpu 4:52.77 total > Non-root cgroup before changes: > make -j2 507.14 user 62.66s system 193% cpu 4:54.74 total > Root cgroup after changes (0 thresholds): > make -j2 507.13 user 62.20s system 193% cpu 4:53.55 total > Non-root cgroup after changes (0 thresholds): > make -j2 507.70 user 64.20s system 193% cpu 4:55.70 total > Root cgroup after changes (1 thresholds, never crossed): > make -j2 506.97 user 62.20s system 193% cpu 4:53.90 total > Non-root cgroup after changes (1 thresholds, never crossed): > make -j2 507.55 user 64.08s system 193% cpu 4:55.63 total > > Any comments? Thanks for adding the documentation, now on to more critical questions 1. Any reasons for not using cgroupstats? 2. Is there a user space test application to test this code. IIUC, I need to write a program that uses eventfd(2) and then passes the eventfd descriptor and thresold to cgroup.*event* file and then the program will get notified when the threshold is reached? -- Balbir -- 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/