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From: Norman Wilson <norman@oclsc.org>
To: tuhs@tuhs.org
Subject: Re: [TUHS] dmr streams & networking [was: Re: If not Linux, then what?]
Date: Fri, 30 Aug 2019 16:21:47 -0400
Message-ID: <1567196510.21824.for-standards-violators@oclsc.org> (raw)

John Reiser did do his own paging system for UNIX 32/V.
I heard about it from friends at Bell Labs ca. 1982-83,
when I was still running systems for physicists at Caltech.
It sounded very interesting, and I would love to have had
my hands on it--page cache unified with buffer cache,
copy-on-write from the start.

The trouble is that Reiser worked in a different group
from the original UNIX crowd, and his management didn't
think his time well spent on that work, so it never got
released.

I remember asking, either during my interview at the Labs
or after I started work there, why the 4.1 kernel had been
chosen instead of Reiser's.  It had to do with maintainability:
there were already people who could come in and hack on the
Berkeley system, as well as more using it and maintaining it,
whereas Reiser's system had become a unicorn.  Nobody in
1127 wanted to maintain a VM system or anything much close
to the VAX hardware.  So the decision was to stick with a
kernel for which someone else would do those things.

Once I'd been there for a year or so and settled in, I found
that I was actually looking after all that stuff, because I
was really interested in it.  (Which seemed to delight a lot
of people.)  Would we have ended up using Reiser's kernel had
I been there a couple of years earlier?  I don't know.

It is in any case a shame that jfr's code never saw the light
of day.  I really hope someone can find it on an old tape
somewhere and we can get it into the archive, if only because
I'd love to look at it.

Norman Wilson
Toronto ON

         reply index

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28  9:17 Paul Ruizendaal
2019-08-28 10:44 ` Angelo Papenhoff
2019-08-28 17:57 Doug McIlroy
2019-08-28 18:05 ` Adam Thornton
2019-08-28 18:08 ` arnold
2019-08-28 18:27 ` Warner Losh
2019-08-28 18:34   ` Warner Losh
2019-08-28 21:54 ` Rob Pike
2019-08-29  6:43   ` arnold
2019-08-29  7:39     ` Rob Pike
2019-08-29 16:26       ` arnold
2019-08-29  3:29 ` Lawrence Stewart
2019-08-29  4:10   ` Larry McVoy
2019-08-28 18:41 Doug McIlroy
2019-08-28 18:49 ` arnold
2019-08-28 19:03   ` Chet Ramey
2019-08-28 19:05     ` Larry McVoy
2019-08-29 14:58       ` Jason Stevens
2019-08-29 16:25         ` arnold
2019-08-29 16:38           ` Ralph Corderoy
2019-08-29 17:35             ` arnold
2019-08-28 21:55 ` Rob Pike
2019-08-28 22:29   ` George Michaelson
2019-08-28 22:36     ` William Pechter
2019-08-28 23:02       ` Arthur Krewat
2019-08-29  0:11       ` Clem cole
2019-08-29  0:18         ` George Michaelson
2019-08-29  6:27         ` Lars Brinkhoff
2019-08-30 20:21 Norman Wilson [this message]
2019-08-30 20:28 ` Larry McVoy
2019-08-30 20:39 ` Clem Cole
2019-08-30 21:52   ` Larry McVoy
2019-08-31  0:58     ` Clem Cole
2019-08-31  1:13       ` Bakul Shah
2019-08-31  2:46         ` Clem cole
2019-08-31  2:57           ` Clem cole
2019-08-31  3:14             ` Gregg Levine
2019-08-31  3:47               ` Clem cole
2019-08-31  3:38             ` Bakul Shah
2019-08-31  5:37             ` Dave Horsfall
2019-08-31 19:03               ` Clem Cole
2019-09-05  5:11                 ` Al Kossow
2019-09-02  8:28               ` Peter Jeremy
2019-09-02 23:26                 ` Dave Horsfall
2019-08-31  3:19           ` Bakul Shah
2019-08-31  9:43 Rudi Blom
2019-08-31 15:41 ` Clem Cole
2019-09-01  2:16 Rudi Blom
2019-09-01  2:36 [TUHS] dmr streams & networking [was: Re: If not Linux, then what? Rudi Blom

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