Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754774AbZJEURX (ORCPT ); Mon, 5 Oct 2009 16:17:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754623AbZJEURX (ORCPT ); Mon, 5 Oct 2009 16:17:23 -0400 Received: from mail-yw0-f137.google.com ([209.85.211.137]:51369 "EHLO mail-yw0-f137.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753982AbZJEURW convert rfc822-to-8bit (ORCPT ); Mon, 5 Oct 2009 16:17:22 -0400 MIME-Version: 1.0 Date: Mon, 5 Oct 2009 13:05:07 -0700 (PDT) In-Reply-To: X-IP: 137.222.114.243 References: User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.3) Gecko/20090924 Ubuntu/9.10 (karmic) Firefox/3.5.3,gzip(gfe),gzip(gfe) Message-ID: Subject: Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why? From: Daniel J Blueman To: Jeff Chua Cc: Linux Kernel Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 932 Lines: 21 On Oct 5, 5:10?pm, Jeff Chua wrote: > I've 3 systems with 4GB, 16GB and 64GB all running 32bit with these set: [snip] > Question is ... is there anyway to increase "low mem" without resorting to > migrating to 64bit? (Look... it only has 378MB total low mem vs 850MB on > the 4GB system). I've oracle installed on the 64GB system and it keeps > getting OOMs! Whilst linux may be able to address all 64GB of memory (running 32 or 64-bit), every 32-bit process will be limited to ~3GB virtual address space, which may be the limiting factor for your out-of-memory issue with Oracle. The only solution is to run 64-bit Oracle, alas. Daniel -- Daniel J Blueman -- 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/