From owner-freebsd-hackers Tue Jan 1 14: 1:36 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from falcon.prod.itd.earthlink.net (falcon.mail.pas.earthlink.net [207.217.120.74]) by hub.freebsd.org (Postfix) with ESMTP id D262737B420 for ; Tue, 1 Jan 2002 14:01:32 -0800 (PST) Received: from pool0644.cvx22-bradley.dialup.earthlink.net ([209.179.200.134] helo=mindspring.com) by falcon.prod.itd.earthlink.net with esmtp (Exim 3.33 #1) id 16LWyL-0006GN-00; Tue, 01 Jan 2002 14:01:25 -0800 Message-ID: <3C3231B8.38C5A741@mindspring.com> Date: Tue, 01 Jan 2002 14:01:28 -0800 From: Terry Lambert X-Mailer: Mozilla 4.7 [en]C-CCK-MCD {Sony} (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Steve Shorter Cc: freebsd-hackers@freebsd.org Subject: Re: kernel panic on boot with 4G RAM References: <20020101165106.A80908@nomad.lets.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Steve Shorter wrote: > I need an NFS server with 4G ram. When I boot a 4.5-PRE kernel > it panics during the boot process, not always at the same place though. > My first instinct is bad hardware because of the lack of consistency > in panic location, however I was wondering if there were some issues > with kernel tuning for machines with large memory that I should be aware of. > This machine boots OK with 3G or less. You really need to change the allocation of swap page descriptors in /sys/i386/machdep.c (among other things). I personally suggest compiling your kernel with 3G KVA/1G User, instead of the default of 1G KVA/3G User. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message