From: Paul Winalski <paul.winalski@gmail.com>
To: arnold@skeeve.com
Cc: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] non-blocking IO
Date: Tue, 2 Jun 2020 14:53:59 -0400 [thread overview]
Message-ID: <CABH=_VQj_3qdK+Cu3t5hZPQFUny_TFPxR51Cfuj=Av4Jt3cYyQ@mail.gmail.com> (raw)
In-Reply-To: <202006021759.052Hx5Et022619@freefriends.org>
On 6/2/20, arnold@skeeve.com <arnold@skeeve.com> wrote:
> Paul Winalski <paul.winalski@gmail.com> wrote:
>
>> So I'm curious as to what the rationale was for Unix to have been
>> designed with basic I/O being blocking rather than asynchronous.
>
> Also, the early Unixs were on smaller -11s, not the /45 or /70 with
> split I&D space and the ability to address lost more RAM.
I first encountered DOS/360 on a System/360 model 25 with 48K of
memory. This was a one-job-at-a-time batch system, but the I/O
primitive (EXCP--execute channel program) was asynchronous. So I
don't think the small memory rationale really applies.
-Paul W.
next prev parent reply other threads:[~2020-06-02 18:54 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 14:19 Paul Ruizendaal
2020-06-02 17:45 ` Paul Winalski
2020-06-02 17:59 ` arnold
2020-06-02 18:53 ` Paul Winalski [this message]
2020-06-02 19:18 ` Clem Cole
2020-06-02 21:15 ` Lawrence Stewart
2020-06-02 22:03 ` [TUHS] non-blocking IO - threads Jon Steinhart
2020-06-02 23:05 ` Rob Pike
2020-06-02 23:09 ` Rob Pike
2020-06-02 23:21 ` Larry McVoy
2020-06-03 0:39 ` Rob Pike
2020-06-02 23:12 ` Jon Steinhart
2020-06-03 16:42 ` Paul Winalski
2020-06-03 17:57 ` Jon Forrest
2020-06-03 5:38 ` [TUHS] Unix on the Arpanet Lars Brinkhoff
2020-06-03 12:23 ` Lawrence Stewart
2020-06-02 18:23 ` [TUHS] non-blocking IO Dan Cross
2020-06-02 18:56 ` Paul Winalski
2020-06-02 19:23 ` Clem Cole
-- strict thread matches above, loose matches on Subject: below --
2020-06-06 13:29 Noel Chiappa
2020-06-02 20:13 Noel Chiappa
2020-06-02 20:43 ` Clem Cole
2020-06-02 22:14 ` Rich Morin
2020-06-03 16:31 ` Paul Winalski
2020-06-03 19:19 ` John P. Linderman
2020-06-02 8:22 Paul Ruizendaal
2020-06-02 0:08 Noel Chiappa
2020-06-01 23:17 Noel Chiappa
2020-05-31 11:09 Paul Ruizendaal
2020-05-31 16:05 ` Clem Cole
2020-05-31 16:46 ` Warner Losh
2020-05-31 22:01 ` Rob Pike
2020-06-01 3:32 ` Dave Horsfall
2020-06-01 14:58 ` Larry McVoy
2020-06-04 9:04 ` Peter Jeremy
2020-06-04 14:19 ` Warner Losh
2020-06-04 16:34 ` Tony Finch
2020-06-04 16:50 ` Larry McVoy
2020-06-05 16:00 ` Dan Cross
2020-06-12 8:18 ` Dave Horsfall
2020-06-01 16:58 ` Heinz Lycklama
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