From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262372AbULCU6g (ORCPT ); Fri, 3 Dec 2004 15:58:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262381AbULCU6d (ORCPT ); Fri, 3 Dec 2004 15:58:33 -0500 Received: from ns.onesite.org ([69.50.195.197]:59870 "EHLO floc.net") by vger.kernel.org with ESMTP id S262372AbULCU6W (ORCPT ); Fri, 3 Dec 2004 15:58:22 -0500 Date: Fri, 3 Dec 2004 21:58:19 +0100 From: Alain Tesio To: Marcelo Tosatti Cc: linux-kernel@vger.kernel.org Subject: Re: HIGHMEM=4G slows down ps2pdf with 2.4.28 Message-ID: <20041203215819.15bab008@alain> In-Reply-To: <20041202190815.GA2843@dmt.cyclades> References: <20041201232522.6e39c954@alain> <20041202190815.GA2843@dmt.cyclades> X-Mailer: Sylpheed-Claws 0.9.12b (GTK+ 1.2.10; i386-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2 Dec 2004 17:08:15 -0200 Marcelo Tosatti wrote: > On Wed, Dec 01, 2004 at 11:25:22PM +0100, Alain Tesio wrote: > > Hi, > > > > With a 2.4.28 kernel, 1.5 Go RAM and nothing exotic, everything works fine > > with CONFIG_HIGHMEM4G and CONFIG_HIGHMEM=y except that > > ps2pdf is about 30 times slower > How does /proc/mtrr look like? > > Maybe some of your memory is configured as uncacheable. reg00: base=0x00000000 ( 0MB), size=1024MB: write-back, count=1 reg01: base=0x40000000 (1024MB), size= 256MB: write-back, count=1 reg02: base=0x50000000 (1280MB), size= 128MB: write-back, count=1 reg03: base=0x58000000 (1408MB), size= 64MB: write-back, count=1 reg04: base=0x5c000000 (1472MB), size= 32MB: write-back, count=1 reg05: base=0x5e000000 (1504MB), size= 16MB: write-back, count=1 I don't think that the hosting company played with the bios settings, and I don't do anything special with memory. Alain