From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932219Ab1JCP3P (ORCPT ); Mon, 3 Oct 2011 11:29:15 -0400 Received: from mail-wy0-f174.google.com ([74.125.82.174]:58246 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756067Ab1JCP3J (ORCPT ); Mon, 3 Oct 2011 11:29:09 -0400 MIME-Version: 1.0 In-Reply-To: <1317461738.3375.46.camel@mfleming-mobl1.ger.corp.intel.com> References: <1317395577-14091-1-git-send-email-matt@console-pimps.org> <1317461738.3375.46.camel@mfleming-mobl1.ger.corp.intel.com> From: Linus Torvalds Date: Mon, 3 Oct 2011 08:28:48 -0700 X-Google-Sender-Auth: nq8PTqnVUpNPTWHv3Tzq65MaBDA Message-ID: Subject: Re: [RFC][PATCH 0/5] Signal scalability series To: Matt Fleming Cc: Andi Kleen , Oleg Nesterov , Tejun Heo , linux-kernel@vger.kernel.org, Tony Luck , Thomas Gleixner , Peter Zijlstra , David Mosberger-Tang Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Oct 1, 2011 at 2:35 AM, Matt Fleming wrote: > > You and me both. Unfortunately, the ia64 guys had a different opinion, > http://www.spinics.net/lists/linux-ia64/msg08363.html Well, considering that it apparently slows down the single-threaded case by 50% on an architecture that actually *matters*, I think the whole discussion is somewhat academic, don't you? "Scalability" is pretty much never a valid excuse for "slows down the common case". Linus