From: Angelo Papenhoff <aap@papnet.eu>
To: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] dmr streams & networking [was: Re: If not Linux, then what?]
Date: Wed, 28 Aug 2019 12:44:59 +0200 [thread overview]
Message-ID: <20190828104459.GA7483@indra.papnet.eu> (raw)
In-Reply-To: <5467B5A6-B084-424E-9493-52D7F03E4074@planet.nl>
On 28/08/19, Paul Ruizendaal wrote:
>
> There is some contemporary material that gives a bit of context. The quotes are a bit contradictory and perhaps reflect evolving views.
>
> [1]
>
> The original dmr paper (1984) on streams (http://cm.bell-labs.co/who/dmr/st.html) seems to support the no networking view, focussing on terminal handling in its discussion. Also, near the end it says: "Streams are linear connections; by themselves, they support no notion of multiplexing, fan-in or fan-out. [...] It seems likely that a general multiplexing mechanism could help in both cases, but again, I do not yet know how to design it.” This seems to exclude usage for networking, which is typically multiplexed.
>
> [2]
>
> However, now that the V8 sources are available it is clear that the streams mechanism was used (by dmr?) to implement TCP/IP networking. He explains how that tallies with the above quote on multiplexing in a 1985 usenet post: https://groups.google.com/forum/#!topicsearchin/net.unix-wizards/subject$3Astreams/net.unix-wizards/b7W_j_0qASU
> The config files in the surviving TUHS V8 source tree actually match with the setup that dmr described in the penultimate paragraph.
>
Something else I found interesting is in v8's blit/Road.map:
"Next, operating systems. We run under Berkeley 4.1bsd or Dennis Ritchie's
stacked line-discipline system."
That sounds to me like an early v8. If not, what was it? I'm really
interested in the timeline here. How long was research running on a
PDP-11 and when did they move to a VAX?
aap
next prev parent reply other threads:[~2019-08-28 10:45 UTC|newest]
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 [this message]
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
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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