Re: paging and loading

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Article #3007

#3007

From: Henry Spencer
Date: Wed, 15 Oct 1986 20:43

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> ... The IBM 3090 has already shown an example of a
> system where it is faster to page synchronously rather than context switch,
> in which case your CPU *is* idle while paging - and these are likely to
> become more common. ...

Ah, but what device are they paging from?  If I remember it correctly --
I'm not sure of this -- the 3090 is paging out of ordinary RAM, which they
would have preferred to make directly addressable except that they are
constrained by backward compatibility and not enough address bits.  This
is a kludge, not something that is likely to become widespread.
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,decvax,pyramid}!utzoo!henry

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Path: arc1-ca.pugleaf.net!utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.arch
Subject: Re: paging and loading
Message-ID: <7232@utzoo.UUCP>
Date: Wed, 15-Oct-86 16:43:52 EDT
Article-I.D.: utzoo.7232
Posted: Wed Oct 15 16:43:52 1986
Date-Received: Wed, 15-Oct-86 16:43:52 EDT
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Organization: U of Toronto Zoology
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