Date: Tue, 22 Jul 2008 15:35:10 -0700 From: "Manjunath Ranganathaiah" <mgowda82@gmail.com> To: freebsd-current@freebsd.org Subject: setting memory size with hw.physmem Message-ID: <d0b92eea0807221535k3fb07a60k2b76ce98b2d43a84@mail.gmail.com>
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On of my system with 8G of RAM running 7.0R amd64, dmesg shows memory usage as: usable memory = 8576397312 (8179 MB) avail memory = 8289071104 (7905 MB) If I set hw.physmem tunable to 8g, dmesg shows the following usable memory = 7771095040 (7411 MB) avail memory = 7507386368 (7159 MB) If I set hw.physmem to 8950M usable memory = 8565911552 (8169 MB) avail memory = 8278892544 (7895 MB) if I set hw.physmem to 8999M usable memory = 8576397312 (8179 MB) avail memory = 8289071104 (7905 MB) Is this expected behavior? How do I increase or decrease physical memory size by 1MB? Thanks, -Manjunath
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