Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757500Ab3G3UeL (ORCPT ); Tue, 30 Jul 2013 16:34:11 -0400 Received: from mga02.intel.com ([134.134.136.20]:44583 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757122Ab3G3UeK (ORCPT ); Tue, 30 Jul 2013 16:34:10 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,781,1367996400"; d="scan'208";a="379091945" Subject: Re: Performance regression from switching lock to rw-sem for anon-vma tree From: Tim Chen To: Davidlohr Bueso Cc: Ingo Molnar , Peter Zijlstra , Ingo Molnar , Andrea Arcangeli , Mel Gorman , "Shi, Alex" , Andi Kleen , Andrew Morton , Michel Lespinasse , Davidlohr Bueso , "Wilcox, Matthew R" , Dave Hansen , Rik van Riel , linux-kernel@vger.kernel.org, linux-mm , Dave Chinner In-Reply-To: <1375214394.11122.4.camel@buesod1.americas.hpqcorp.net> References: <1372366385.22432.185.camel@schen9-DESK> <1372375873.22432.200.camel@schen9-DESK> <20130628093809.GB29205@gmail.com> <1372453461.22432.216.camel@schen9-DESK> <20130629071245.GA5084@gmail.com> <1372710497.22432.224.camel@schen9-DESK> <20130702064538.GB3143@gmail.com> <1373997195.22432.297.camel@schen9-DESK> <20130723094513.GA24522@gmail.com> <20130723095124.GW27075@twins.programming.kicks-ass.net> <20130723095306.GA26174@gmail.com> <1375143209.22432.419.camel@schen9-DESK> <1375214394.11122.4.camel@buesod1.americas.hpqcorp.net> Content-Type: text/plain; charset="UTF-8" Date: Tue, 30 Jul 2013 13:34:11 -0700 Message-ID: <1375216452.22432.422.camel@schen9-DESK> Mime-Version: 1.0 X-Mailer: Evolution 2.32.3 (2.32.3-1.fc14) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 464 Lines: 16 On Tue, 2013-07-30 at 12:59 -0700, Davidlohr Bueso wrote: > cc'ing Dave Chinner for XFS > Davidlohr, I also wonder it this change benefit your workload. Will be interested to know of your performance numbers. Tim -- 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/