Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263040AbUDERqa (ORCPT ); Mon, 5 Apr 2004 13:46:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263039AbUDERqT (ORCPT ); Mon, 5 Apr 2004 13:46:19 -0400 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:58789 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S263032AbUDERqR (ORCPT ); Mon, 5 Apr 2004 13:46:17 -0400 Date: Mon, 5 Apr 2004 19:46:16 +0200 From: Andrea Arcangeli To: Eric Whiting Cc: akpm@osdl.org, linux-kernel@vger.kernel.org Subject: Re: -mmX 4G patches feedback Message-ID: <20040405174616.GH2234@dualathlon.random> References: <40718B2A.967D9467@amis.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <40718B2A.967D9467@amis.com> User-Agent: Mutt/1.4.1i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 888 Lines: 19 On Mon, Apr 05, 2004 at 10:36:58AM -0600, Eric Whiting wrote: > The 4G/4G patch is still useful for me -- although 64bit linux (x86_64) is the > best 'real' long-term solution to large memory jobs. what's your primary limitation? physical memory or virtual address space? if it's physical memory go with 2.6-aa and it'll work fine up to 32G boxes included at full cpu performance. if it's virtual address space and you've not much more than 4G of ram 3.5:1.5 usually works fine, and againt you'll run at full cpu performance. also make sure to move the task_unmapped_base at around 200M, so that you get 1G more of address space for free. - 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/