From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 3 Sep 2001 13:41:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 3 Sep 2001 13:41:02 -0400 Received: from lsmls02.we.mediaone.net ([24.130.1.15]:40098 "EHLO lsmls02.we.mediaone.net") by vger.kernel.org with ESMTP id ; Mon, 3 Sep 2001 13:40:44 -0400 Message-ID: <3B93C104.AE8909C4@kegel.com> Date: Mon, 03 Sep 2001 10:42:28 -0700 From: Dan Kegel X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.2.14-5.0 i686) X-Accept-Language: en MIME-Version: 1.0 Newsgroups: linux.redhat.misc CC: "linux-kernel@vger.kernel.org" Subject: Re: 1.5 GB ram on system - only 900 MB shows In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit To: unlisted-recipients:; (no To-header on input)@localhost.localdomain Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org natestone@hotmail.com (Nate Stone) wrote: > > > We were able to address 1024 MB of ram on our previous machine using > > > the append feature during boot up, but it doesn't seem to work any > > > more. Is this a problem related to the new memory management system > > > in kernel 2.4.xx? Any solutions? > > > > I think you must recompile your kernel with >1GB support. ... > > Actually, we already built the kernel with 4GB support enabled and the > ram was still not recognized. We get the same exact problem. > > ... try running > 40+million pageviews per month off a crippled server because you can't > access all the ram and the shared memory utilization sucks in kernel > 2.4.xx. Talk about nightmares. > > We probably will switch back to kernel 2.2.16 (which worked with 1GB > of ram) and seemed way more efficient at memory management unless > someone offers an alternative. Going back to 2.2.x is probably a good idea for the moment, but it's a bit suprising that the RAM isn't showing up in 2.4. Is it possible you didn't boot with the kernel you thought you did? I'm cc'ing this to linux-kernel, as this isn't really redhat specific, and the people there may have suggestions for you. - Dan -- "I have seen the future, and it licks itself clean." -- Bucky Katt