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From: Larry McVoy <lm@mcvoy.com>
To: Noel Chiappa <jnc@mercury.lcs.mit.edu>
Cc: tuhs@minnie.tuhs.org
Subject: Re: [TUHS] Interesting commentary on Unix from Multicians.
Date: Sun, 10 Apr 2022 10:31:51 -0700	[thread overview]
Message-ID: <20220410173151.GO6248@mcvoy.com> (raw)
In-Reply-To: <20220410171422.600D018C0D5@mercury.lcs.mit.edu>

On Sun, Apr 10, 2022 at 01:14:22PM -0400, Noel Chiappa wrote:
> Unfortunately, one of the two (to me) best things about Unix, is something it
> has since lost - which is its incredible bang/buck ratio - to be more
> precise, the functionality/complexity ratio of the early versions of the
> system.

Amen to that though I think our memory is clouded by V6 that was
uniprocessor, no networking.  With all due respect to Unix, that's
not a hard problem.   Systems today are more complex with SMP, NUMA,
networking, etc.

> Which was good in that it helped keep the system simple and clear - but it
> limited the flexibilty and richness of the interface. (Imagine building a
> large application which had a hard boundary across the middle of it, with
> extremely limited interactions across the boundary. Just so with the
> interface in Unix between 'user' code, and the kernel.)

That has changed in the last decade or two.  Pugs did the work to expose
the IOMMU to user process and that has definitely blurred the line.

Thanks for your thoughtful email, I'm still absorbing it.

  reply	other threads:[~2022-04-10 17:33 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-10 17:14 Noel Chiappa
2022-04-10 17:31 ` Larry McVoy [this message]
2022-04-10 20:41 ` John Cowan
  -- strict thread matches above, loose matches on Subject: below --
2022-04-08 16:07 Noel Chiappa
2022-04-07 16:32 Dan Cross
2022-04-08  5:30 ` Lars Brinkhoff
2022-04-08 13:34   ` Clem Cole
2022-04-08 14:14     ` Dan Cross
2022-04-08 13:59   ` Dan Cross
2022-04-08 15:28     ` Larry McVoy
2022-04-08 15:35       ` Dan Cross
2022-04-08 19:36       ` Rich Morin
2022-04-08 21:02       ` Greg A. Woods
2022-04-08 23:34         ` Andrew Warkentin
2022-04-09 19:28           ` Greg A. Woods
2022-04-09  3:33         ` Adam Thornton
2022-04-09 12:10         ` tytso
2022-04-09 13:09           ` Dan Cross
2022-04-09 19:14           ` Greg A. Woods
2022-04-08 15:45     ` Jon Steinhart

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