Berkeley CSUA MOTD:Entry 11195
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2003/11/22-24 [Computer/HW/Memory] UID:11195 Activity:nil
11/22   Linux RAM question, why the slight descrapancy between the available
        (non AGP) phsical RAM and the available (non kernel) RAM reported
        by the kernel messages? (these from three different computers)
        1024MB-0MB(pci)  = 1024MB : 1048576k - (dmesg: 1048560k) =  16k
         512MB-16MB(agp) =  496MB :  507904k - (dmesg:  507840k) =  64k
          96MB-0MB(pci)  =   96MB :   98304k - (dmesg:   98112k) = 192k
        \_ Guessing: bios caching?
           \_ Is that the bios copying itself into RAM?
              \_ Just a guess, but probably.  Check the bios settings for
                 video and other caching.  It's likely that if you disable
                 all of that you'll see the ram numbers match or at least
                 get closer.  192k is a lot on that last machine but could
                 still all be bios caching if it's all turned on.  Please
                 report back if this is the case.  I'm curious.
                 \_ The last machine is a ThinkPad 600. I'll check into
                    the bios when I get a chance. I'll post something.
                    Thanks. -op