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Date:      Sat, 10 Feb 1996 11:43:51 +0100 (MET)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        dufault@hda.com (Peter Dufault)
Cc:        hackers@FreeBSD.ORG
Subject:   Re: Compressed RAM/SWAP
Message-ID:  <199602101043.LAA04471@labinfo.iet.unipi.it>
In-Reply-To: <199602101037.FAA09522@hda.com> from "Peter Dufault" at Feb 10, 96 05:36:56 am

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> If there are lots of zero'd pages that aren't used that often,
> can't be eliminated, and would benefit from compression wouldn't
> it be better to look at a ZFOD (zero fill on demand) mechanism?

But this only works if the pages are not accessed at all. The first
time they are accessed they must be filled up.

	Luigi
====================================================================
Luigi Rizzo                     Dip. di Ingegneria dell'Informazione
email: luigi@iet.unipi.it       Universita' di Pisa
tel: +39-50-568533              via Diotisalvi 2, 56126 PISA (Italy)
fax: +39-50-568522              http://www.iet.unipi.it/~luigi/
====================================================================



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