From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263876AbUDFQOL (ORCPT ); Tue, 6 Apr 2004 12:14:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263893AbUDFQOL (ORCPT ); Tue, 6 Apr 2004 12:14:11 -0400 Received: from node-d-1fcf.a2000.nl ([62.195.31.207]:6793 "EHLO laptop.fenrus.com") by vger.kernel.org with ESMTP id S263876AbUDFQOH (ORCPT ); Tue, 6 Apr 2004 12:14:07 -0400 Subject: Re: -mmX 4G patches feedback [numbers: how much performance impact] From: Arjan van de Ven To: Andrea Arcangeli Cc: Ingo Molnar , Eric Whiting , akpm@osdl.org, linux-kernel@vger.kernel.org, Pete Zaitcev In-Reply-To: <20040406155925.GW2234@dualathlon.random> References: <40718B2A.967D9467@amis.com> <20040405174616.GH2234@dualathlon.random> <4071D11B.1FEFD20A@amis.com> <20040405221641.GN2234@dualathlon.random> <20040406115539.GA31465@elte.hu> <20040406155925.GW2234@dualathlon.random> Content-Type: text/plain Content-Transfer-Encoding: 7bit Message-Id: <1081268018.4680.6.camel@laptop.fenrus.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 (1.4.5-7) Date: Tue, 06 Apr 2004 18:13:39 +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-04-06 at 17:59, Andrea Arcangeli wrote: > You should also use a bleeding edge cpu for you measurements with large > tlb caches, which cpu did you use for your measurements? afaics all Intel and AMD cpus with more than say 32 or 64 TLB's are actually 64 bit capable.... so obviously you run a 64 bit kernel there. (and amd64 even has that sweet CAM filter on the tlbs to mitigate the effect even if you run a 32 bit kernel)