Date: Mon, 13 Feb 2006 11:08:31 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Robert Leftwich <freebsd@rtl.fmailbox.com> Cc: freebsd-amd64@freebsd.org Subject: Re: FreeBSD 6.0, amd64, A8N-SLI and 4gb ram Message-ID: <20060213190831.GA1510@troutmask.apl.washington.edu> In-Reply-To: <1139828635.13761.254227794@webmail.messagingengine.com> References: <1139828635.13761.254227794@webmail.messagingengine.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, Feb 13, 2006 at 10:03:55PM +1100, Robert Leftwich wrote: > > I've been running FreeBSD 6.0 stable on an A8N-SLI Premium amd64 box > with 2gb of ram for a few weeks now and it has been running well, but > some of the analysis I run needs more ram, so I dropped in another 2 gb > and started having all sorts of weird problems, such as DHCP failure and > running very slowly. I tracked it down to 2 bios settings, both related > to PAE (one turning on s/w PAE, the other h/w) - if i turn both of those > off, then everything works, but FreeBSD can only see 3gb of ram. Some > documentation suggested a custom kernel with 'options PAE' enabled > would be required, but adding that generates an 'invalid option PAE' > error when running make. Is it possible for FreeBSD to access the full > 4gb on this m/b? > You don't need "option PAE" on FreeBSD-amd64. If you have 4+GB, then FreeBSD-amd64 should have access to the memory. We need to see the top portion of your dmesg concerning the 3 GB versus 4 GB question. This is a FAQ in that a small amount of memory is reserved for the hardware/kernel. -- Steve
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20060213190831.GA1510>