Date: Fri, 29 Oct 1999 23:14:05 -0400 (EDT) From: Brian Fundakowski Feldman <green@FreeBSD.org> To: Alan Cox <alc@cs.rice.edu> Cc: Bernd Walter <ticso@cicely.de>, current@freebsd.org Subject: Re: copy-on-write optimized faults Message-ID: <Pine.BSF.4.10.9910292312150.82763-100000@green.myip.org> In-Reply-To: <19991029195243.E28768@cs.rice.edu>
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On Fri, 29 Oct 1999, Alan Cox wrote:
> Thanks to Bernd and everyone else who has responded. Unless someone
> reports a case where the old "optimization" gets applied more often
> than 1 in ten million copy-on-write faults, I'm going to remove
> the old code in a few days. At this frequency, the cost of deciding
> whether or not to apply the optimization on every copy-on-write fault
> is greater than what is saved those 26 times it is applied.
I get about 1.5PPM optimized COW faults:
7734278 copy-on-write faults
12 copy-on-write optimized faults
--
Brian Fundakowski Feldman \ FreeBSD: The Power to Serve! /
green@FreeBSD.org `------------------------------'
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