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From: Ralph Corderoy <ralph@inputplus.co.uk>
To: tuhs@tuhs.org
Subject: [TUHS] Re: On the uniqueness of DMR's C compiler
Date: Sat, 11 May 2024 10:16:13 +0100	[thread overview]
Message-ID: <20240511091613.2399F215AA@orac.inputplus.co.uk> (raw)
In-Reply-To: <CABH=_VTCZz-N2rj6neWFfVb7=HKJ9tMJqNw6PcEv+2aJ_7a8iQ@mail.gmail.com>

Hi,

Paul W. wrote:
> The compilers were table-driven as much as possible, heavily overlaid,
> and used three scratch files on disk (split-cylinder allocated to
> minimize seek time).

I didn't know the term ‘split cylinder’.  A cylinder has multiple
tracks, each with its own read/write head.  Allocate different tracks to
different files and switching files needs no physical movement or
settling time; just electronically switch R/W head.

-- 
Cheers, Ralph.

  reply	other threads:[~2024-05-11  9:16 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-05-08 18:29 Douglas McIlroy
2024-05-10 17:28 ` Paul Winalski
2024-05-11  9:16   ` Ralph Corderoy [this message]
2024-05-11 13:42   ` G. Branden Robinson
     [not found] <171535904627.4052234.5321502833323676423@minnie.tuhs.org>
2024-05-10 18:55 ` Paul McJones
     [not found] <171519201646.4052234.694570138790187562@minnie.tuhs.org>
2024-05-09  3:39 ` Paul McJones
2024-05-09  3:46   ` Warner Losh
  -- strict thread matches above, loose matches on Subject: below --
2024-05-07 20:59 [TUHS] " Paul Ruizendaal
2024-05-07 22:07 ` [TUHS] " Rob Pike
2024-05-08  9:35   ` Paul Ruizendaal
2024-05-08 13:12     ` Rob Pike
2024-05-08 15:51     ` Clem Cole
2024-05-08 16:07       ` Jon Forrest
2024-05-08 17:49         ` Tom Perrine
2024-05-08 17:05       ` Adam Sampson
2024-05-08 17:45       ` Al Kossow
2024-05-08 18:12         ` Clem Cole
2024-05-08 18:12           ` Clem Cole
2024-05-09  1:27           ` Lawrence Stewart
2024-05-31 12:00       ` Paul Ruizendaal
2024-05-31 12:21         ` Peter Yardley
2024-05-08 11:09 ` Michael Kjörling
2024-05-09 20:40 ` Paul Ruizendaal via TUHS
2024-05-09 20:57   ` Al Kossow

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