From mboxrd@z Thu Jan  1 00:00:00 1970
From: doug@cs.dartmouth.edu (Doug McIlroy)
Date: Mon, 22 Jan 2018 07:31:54 -0500
Subject: [TUHS] !mail tuhs@minnie.tuhs.org
Message-ID: <201801221231.w0MCVsjq019507@coolidge.cs.Dartmouth.EDU>

Re: [TUHS] Kernel Sizes

> I've often thought that LSX was V5 'regressed' to the concepts of
> V1, which was facing similar hardware constraints. Is that a
> reasonable view?

> LSX has a maximum of three processes that are swapped
> in and out in a stack-like fashion. Only one process is ever in core.
> Is that how V1 was organized?

The rocess limit was higher in V1. And V1 was a time-sharing
system; for which LIFO swapping is inappropriate. So LSX
seems to have "regressed" to some pre-Unix state.

doug