From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934066Ab3BNKoB (ORCPT ); Thu, 14 Feb 2013 05:44:01 -0500 Received: from mail-ee0-f43.google.com ([74.125.83.43]:49263 "EHLO mail-ee0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933606Ab3BNKn7 (ORCPT ); Thu, 14 Feb 2013 05:43:59 -0500 Date: Thu, 14 Feb 2013 11:43:53 +0100 From: Ingo Molnar To: Linus Torvalds Cc: Rik van Riel , "H. Peter Anvin" , Linux Kernel Mailing List , Peter Zijlstra , aquini@redhat.com, Andrew Morton , Thomas Gleixner , Michel Lespinasse , linux-tip-commits@vger.kernel.org, Steven Rostedt Subject: Re: [tip:core/locking] x86/smp: Move waiting on contended ticket lock out of line Message-ID: <20130214104353.GA25282@gmail.com> References: <20130206150403.006e5294@cuia.bos.redhat.com> <511BE4A3.8050607@redhat.com> <511C1204.9040608@redhat.com> <511C24A6.8020409@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Linus Torvalds wrote: > > Eric got a 45% increase in network throughput, and I saw a > > factor 4x or so improvement with the semaphore test. I > > realize these are not "real workloads", and I will give you > > numbers with those once I have gathered some, on different > > systems. > > Good. This is what I want to see. I've put these commits aside meanwhile, until we have the numbers and decide one way or another. Thanks, Ingo