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Technology Stocks : Rambus (RMBS) - Eagle or Penguin
RMBS 101.61+2.8%Dec 5 9:30 AM EST
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To: Scumbria who wrote (63817)1/6/2001 2:03:35 PM
From: Jdaasoc  Read Replies (1) of 93625
 
Scumbria:
Don't play stupid with us. Corresponding Linux commands exist to document available physical/virtual memory in a computer system.

for example Linux "mem" command courtesy of www.linuxdoc.org.

john

.SS "`mem=...'"

The BIOS call defined in the PC specification that returns
the amount of installed memory was only designed to be able
to report up to 64MB. Linux uses this BIOS call at boot to
determine how much memory is installed. If you have more than 64MB of
RAM installed, you can use this boot arg to tell Linux how much memory
you have. The value is in decimal or hexadecimal (prefix 0x),
and the suffixes `k' (times 1024) or `M' (times 1048576) can be used.
Here is a quote from Linus on usage of the `mem=' parameter.

\&``The kernel will accept any `mem=xx' parameter you give it, and if it
turns out that you lied to it, it will crash horribly sooner or later.
The parameter indicates the highest addressable RAM address, so
\&`mem=0x1000000' means you have 16MB of memory, for example. For a
96MB machine this would be `mem=0x6000000'.

NOTE NOTE NOTE: some machines might use the top of memory for BIOS
cacheing or whatever, so you might not actually have up to the full
96MB addressable. The reverse is also true: some chipsets will map
the physical memory that is covered by the BIOS area into the area
just past the top of memory, so the top-of-mem might actually be 96MB
+ 384kB for example. If you tell linux that it has more memory than
it actually does have, bad things will happen: maybe not at once, but
surely eventually.''
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