From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760363Ab2EIXpP (ORCPT ); Wed, 9 May 2012 19:45:15 -0400 Received: from mga01.intel.com ([192.55.52.88]:45356 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758527Ab2EIXpN (ORCPT ); Wed, 9 May 2012 19:45:13 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="151187434" Date: Wed, 9 May 2012 16:45:12 -0700 From: Andi Kleen To: Peter Zijlstra Cc: Alex Shi , mgorman@suse.de, npiggin@gmail.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, arnd@arndb.de, rostedt@goodmis.org, fweisbec@gmail.com, jeremy@goop.org, gregkh@linuxfoundation.org, glommer@redhat.com, riel@redhat.com, luto@mit.edu, avi@redhat.com, len.brown@intel.com, dhowells@redhat.com, fenghua.yu@intel.com, borislav.petkov@amd.com, yinghai@kernel.org, cpw@sgi.com, steiner@sgi.com, akpm@linux-foundation.org, penberg@kernel.org, hughd@google.com, rientjes@google.com, kosaki.motohiro@jp.fujitsu.com, n-horiguchi@ah.jp.nec.com, paul.gortmaker@windriver.com, trenn@suse.de, tj@kernel.org, oleg@redhat.com, axboe@kernel.dk, kamezawa.hiroyu@jp.fujitsu.com, viro@zeniv.linux.org.uk, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] TLB flush optimization Message-ID: <20120509234512.GA27196@tassilo.jf.intel.com> References: <1336485790-30902-1-git-send-email-alex.shi@intel.com> <1336489319.16236.43.camel@twins> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1336489319.16236.43.camel@twins> 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 > Have you tried what happens if you get rid of the funny multi-vector-ipi > scheme and use the generic smp_call functions? Yes we did. It's much faster on larger systems. But haven't sent the patch yet because wasn't sure if it wasn't slower on small systems. -Andi -- ak@linux.intel.com -- Speaking for myself only