Date: 08 Feb 2001 14:24:39 +0100 From: Dag-Erling Smorgrav <des@ofug.org> To: Julian Elischer <julian@elischer.org> Cc: Josef Karthauser <joe@tao.org.uk>, Robert Watson <rwatson@FreeBSD.ORG>, Brian Somers <brian@Awfulhak.org>, Bruce Evans <bde@zeta.org.au>, freebsd-current@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: What's changed recently with vmware/linuxemu/file I/O Message-ID: <xzp4ry5gve0.fsf@flood.ping.uio.no> In-Reply-To: Julian Elischer's message of "Thu, 08 Feb 2001 04:08:12 -0800" References: <xzpsnlqmh0o.fsf@flood.ping.uio.no> <Pine.NEB.3.96L.1010207220443.19807J-100000@fledge.watson.org> <20010208113519.A789@tao.org.uk> <3A828C2C.F7CDA809@elischer.org>
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Julian Elischer <julian@elischer.org> writes: > I believe that vmware mmaps a region of memory and then somehow syncs > it to disk. (It is certainly doing something like it here). Theory: VMWare mmaps a region of memory corresponding to the virtual machine's "physical" RAM, then touches every page during startup. Unless some form of clustering is done, this causes 16384 write operations for a 64 MB virtual machine... DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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