From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932162Ab0JORNS (ORCPT ); Fri, 15 Oct 2010 13:13:18 -0400 Received: from mga14.intel.com ([143.182.124.37]:12724 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756538Ab0JORNR (ORCPT ); Fri, 15 Oct 2010 13:13:17 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.57,337,1283756400"; d="scan'208";a="336597778" Subject: Re: [PATCH 3/4] sched: drop group_capacity to 1 only if local group has extra capacity From: Suresh Siddha Reply-To: Suresh Siddha To: Peter Zijlstra Cc: Nikhil Rao , Ingo Molnar , Mike Galbraith , Venkatesh Pallipadi , "linux-kernel@vger.kernel.org" In-Reply-To: <1287162325.1998.101.camel@laptop> References: <1286996978-7007-4-git-send-email-ncrao@google.com> <1287035281-25579-1-git-send-email-ncrao@google.com> <1287143423.29097.1460.camel@twins> <1287162325.1998.101.camel@laptop> Content-Type: text/plain Organization: Intel Corp Date: Fri, 15 Oct 2010 10:13:05 -0700 Message-Id: <1287162786.2622.16.camel@sbsiddha-MOBL3> Mime-Version: 1.0 X-Mailer: Evolution 2.26.3 (2.26.3-1.fc11) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2010-10-15 at 10:05 -0700, Peter Zijlstra wrote: > For regular balancing local_group will be the first, since we only > ascend the domain tree on the local groups. But its not true for no_hz > balancing afaikt. Even for NOHZ, we always ascend each cpu's sched domain and the local group is the first one always. But yes, we are depending on the local group being the first group. thanks, suresh