Douglas A. Tutty wrote: > On Mon, Feb 11, 2008 at 02:04:20PM -0800, Mike Larkin wrote: >> 8-way amd64 (Intel quad Xeon x 2) with 16GB ram. The BIOS and bootloader >> correctly see all 16gb, but the kernel only sees 4.00GB (a very >> non-random amount, indicating to me an artificial limit is being imposed >> somewhere). Just for comparison purposes, amd64 Windows and amd64 Linux >> also both see 16gb, but these are not being considered for deployment. >> >> I've tried both 4.2 and -current from a week or so back, and have the >> same problem on both. I also went through the -GENERIC config and >> GENERIC-MP config and tried to see if any options in there were >> applicable, but did not see anything that seemed appropriate to fix this >> issue. > > I wonder if the fix for Compaq's with more than 16 MB of ram would be > applicable? See the FAQ section 4.12.1.
no, the Compaq issue is a bug between the boot loader and the Compaq BIOS (probably enough blame to share between the two), on a platform that can handle the larger amounts of RAM. The amd64 4G issue is a limitation of the platform...at the moment. It is being worked on, slowly, but there be dragons, and they all have to be slain. Nick.
