Annotation of www/softupdate.html, Revision 1.1
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! 4: <title>Soft Updates</title>
! 5: <link rev=made href=mailto:www@openbsd.org>
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! 7: <meta name="copyright" content="This document copyright 1997 by OpenBSD.">
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! 12: <img alt="[OpenBSD]" SRC="images/smalltitle.gif">
! 13: <p>
! 14:
! 15: <h2><font color=#0000e0>Soft Updates</font></h2>
! 16:
! 17: Over the last two years Kirk McKusick has been working on something
! 18: called "soft updates". This is based on an idea proposed by Greg
! 19: Ganger and Yale Patt that imposing a partial ordering on the buffer
! 20: cache operations would permit the requirement for syncronous writing
! 21: of directory entries to be removed from the FFS code. Thus, a large
! 22: performance increase of disk writing performance.
! 23: <p>
! 24:
! 25: <strong>NOTE: This code only works in OpenBSD -current. It does NOT
! 26: work in OpenBSD 2.2! Don't even waste your time downloading it if you
! 27: are not running OpenBSD -current.</strong>
! 28: <p>
! 29:
! 30: The source code for doing this is not yet free. You should read the
! 31: copyright notices on the files carefully.
! 32: Current versions of the files are
! 33: <a href=http://pdos.lcs.mit.edu/~csapuntz/softdep.tar.gz>available</a>.
! 34: Note that using this archive (which is updated often) with a system more
! 35: than 3 days old might cause you serious grief. You've been warned.
! 36: <p>
! 37:
! 38: Please direct all problem reports with as MUCH information as possible
! 39: (kernel coredumps, tracebacks, etc) to
! 40: <a href=mailto:csapuntz@openbsd.org>Costa</a>.
! 41: Do not waste his time with any other questions or incomplete problem
! 42: reports.