Date: Fri, 15 Aug 2003 21:51:00 -0400 (EDT) From: Daniel Ellard <ellard@eecs.harvard.edu> To: freebsd-hackers@freebsd.org Subject: specifying RAM size at boot? Message-ID: <Pine.BSF.4.51.0308152141100.5880@bowser.eecs.harvard.edu>
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I am experimenting with the relationship between RAM size and various file system performance characteristics. I've got a machine with a large amount of RAM; what I want is to be able to tell FreeBSD to only use a fraction of it, so I can pretend the machine has various different amounts of RAM. The goal is to run my tests and have them run just as if the machine actually had that much RAM. Anyone know how to do this? I thought this was configurable by setting a variable in /boot/loader.conf and rebooting, but I haven't been able to find the right variable(s). (someone suggested MAXMEM, but this doesn' seem to do anything at all.) I'm using FreeBSD 4.8. Thanks, -Dan
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