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To: Michael Sokolov <msokolov@harrier.Uznet.NET>
Subject: Re: Unix History Diagram 
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In-reply-to: Your message of "15 Dec 1998 03:23:10 GMT."
             <199812150323.IAA09225@harrier.Uznet.NET> 
Date: Mon, 14 Dec 1998 21:10:48 -0800
From: Kirk McKusick <mckusick@mckusick.com>
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	From: Michael Sokolov <msokolov@harrier.Uznet.NET>
	Date: 15 Dec 1998   03:23:10 GMT
	To: pups@minnie.cs.adfa.edu.au
	Subject: Re: Unix History Diagram
	Sender: owner-pups@minnie.cs.adfa.edu.au

	...

	   Are you sure that virtual memory appears first in 3BSD? I have always
	thought that it's a 4BSD milestone. Page replacement and demand paging
	probably go with it.

The first virtual memory release was 3BSD. It's performance was
significantly improved in 4BSD.

	Kirk