[comp.unix.ultrix] Configuration file

alan@shodha.dec.com ( Alan's Home for Wayward Notes File.) (03/01/90)

In article <1666@geocub.greco-prog.fr>, lutmann@geocub.greco-prog.fr writes:
> 
>     Hi!
>     
>     I'd like to know the meaning of "physmem" in the configuration
>     file. I'd *appreciate* any help on this subject, because it
>     does not appear in any guides or manuals we have.

	In the "Guide System Configuration File Maintenance" from	
	the V3.0 docset, page 1-6:

	"physmem 'number'

	    This paramter defines an estimate of the amount of
	    physical memory currently in the system in Mbytes.
	    The 'number' argument is not used to limit the amount 
	    of memory, rather, it is used by the system to size 
	    the system page table, so it should be greater than 
	    or equal to the amount of physical memory in the 
	    system."

	If you look in the include file /sys/machine/vmparam.h
	you'll see how what it is used to calculate and from there
	can track down that constant is used.

>                     Thanks in advance,

	You're welcome.
>                                 Johan.
>
>     Please e-mail me directly, if possible.                              

	I'll try to mail a copy, but this might be general interest
	so, I'll also post it.

> 
-- 
Alan Rollow				alan@nabeth.enet.dec.com