From owner-freebsd-hackers Sat Feb 10 02:42:46 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id CAA02496 for hackers-outgoing; Sat, 10 Feb 1996 02:42:46 -0800 (PST) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id CAA02470 for ; Sat, 10 Feb 1996 02:42:31 -0800 (PST) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id LAA04471; Sat, 10 Feb 1996 11:43:51 +0100 From: Luigi Rizzo Message-Id: <199602101043.LAA04471@labinfo.iet.unipi.it> Subject: Re: Compressed RAM/SWAP To: dufault@hda.com (Peter Dufault) Date: Sat, 10 Feb 1996 11:43:51 +0100 (MET) Cc: hackers@FreeBSD.ORG In-Reply-To: <199602101037.FAA09522@hda.com> from "Peter Dufault" at Feb 10, 96 05:36:56 am X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@FreeBSD.ORG Precedence: bulk > 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/ ====================================================================