Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754101Ab2EXInn (ORCPT ); Thu, 24 May 2012 04:43:43 -0400 Received: from merlin.infradead.org ([205.233.59.134]:56327 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753931Ab2EXInj (ORCPT ); Thu, 24 May 2012 04:43:39 -0400 Subject: Re: [PATCH v7 8/8] x86/tlb: just do tlb flush on one of siblings of SMT From: Peter Zijlstra To: Alex Shi Cc: Jan Beulich , borislav.petkov@amd.com, arnd@arndb.de, akinobu.mita@gmail.com, eric.dumazet@gmail.com, fweisbec@gmail.com, rostedt@goodmis.org, hughd@google.com, jeremy@goop.org, len.brown@intel.com, tony.luck@intel.com, yongjie.ren@intel.com, kamezawa.hiroyu@jp.fujitsu.com, seto.hidetoshi@jp.fujitsu.com, penberg@kernel.org, yinghai@kernel.org, tglx@linutronix.de, akpm@linux-foundation.org, ak@linux.intel.com, luto@mit.edu, avi@redhat.com, dhowells@redhat.com, mingo@redhat.com, riel@redhat.com, cpw@sgi.com, steiner@sgi.com, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk, hpa@zytor.com In-Reply-To: <4FBDF200.7060608@intel.com> References: <1337782555-8088-1-git-send-email-alex.shi@intel.com> <1337782555-8088-9-git-send-email-alex.shi@intel.com> <4FBD18D20200007800085951@nat28.tlf.novell.com> <1337792984.9783.37.camel@laptop> <4FBDF200.7060608@intel.com> Content-Type: text/plain; charset="UTF-8" Date: Thu, 24 May 2012 10:43:34 +0200 Message-ID: <1337849014.9783.73.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 476 Lines: 11 On Thu, 2012-05-24 at 16:32 +0800, Alex Shi wrote: > The performance gain data in commit log is getting with NR_CPUS = 256. Remember that most disto kernels are build with NR_CPUS=4096, so that is what most people will run with. -- 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/