From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S938526AbdEYOjF (ORCPT ); Thu, 25 May 2017 10:39:05 -0400 Received: from mail-yw0-f194.google.com ([209.85.161.194]:33392 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759385AbdEYOjD (ORCPT ); Thu, 25 May 2017 10:39:03 -0400 Date: Thu, 25 May 2017 10:39:01 -0400 From: Tejun Heo To: Tim Chen Cc: Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org, Linus Torvalds , Vincent Guittot , Mike Galbraith , Paul Turner , Chris Mason , kernel-team@fb.com, mohini.narkhede@intel.com Subject: Re: [PATCH v2 for-4.12-fixes 1/2] sched/fair: Use task_groups instead of leaf_cfs_rq_list to walk all cfs_rqs Message-ID: <20170525143901.GC23493@htj.duckdns.org> References: <20170509161740.GD8609@htj.duckdns.org> <9dad4417-4b9e-e466-9561-7569cec28ab6@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9dad4417-4b9e-e466-9561-7569cec28ab6@linux.intel.com> User-Agent: Mutt/1.8.2 (2017-04-18) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 24, 2017 at 04:40:34PM -0700, Tim Chen wrote: > We did some preliminary testing of this patchset for a well > known database benchmark on a 4 socket Skylake server system. > It provides a 3.7% throughput boost which is significant for > this benchmark. That's great to hear. Yeah, the walk can be noticeably expensive even with moderate number of cgroups. Thanks for sharing the result. -- tejun