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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: System page table
Message-ID: <5676@ucbvax.ARPA>
Date: Thu, 21-Mar-85 13:10:19 EST
Article-I.D.: ucbvax.5676
Posted: Thu Mar 21 13:10:19 1985
Date-Received: Fri, 22-Mar-85 02:39:01 EST
Sender: daemon@ucbvax.ARPA
Organization: University of California at Berkeley
Lines: 22

From: Tom Melton <tom@tove>


Is the system page table swappable?  It seems that it would not
be since it is physically addressed.  If this is so the system
page table (which is 1/128th of the size of used system virtual
space (including all page tables for all processes for all
users, and the kernel)) is permanently resident. Is this true?
How much does it tend to amount to on ULTRIX?  For comparison,
how much does it tend to amount to on VMS?

More generally:
I am trying to figure out the UNIX 4.2BSD (aka ULTRIX) memory
management.  Does anyone know of a good reference I should get?

Thanks,
	Tom Melton
	University of Maryland Computer Science Department

ARPA	tom@tove
	tom@maryland
UUCP	...decvax!seismo!umcp-cs!tom