From: Andrew Hume <andrew@humeweb.com>
To: Douglas McIlroy <douglas.mcilroy@dartmouth.edu>
Cc: TUHS main list <tuhs@tuhs.org>
Subject: [TUHS] Re: Happy birthday, Unix timestamp!
Date: Fri, 9 Sep 2022 10:16:28 -0700 [thread overview]
Message-ID: <EFAE2ABB-C55F-4E5E-BE62-7CCC1BB6A80A@humeweb.com> (raw)
In-Reply-To: <CAKH6PiV0hfYmee=WDT5CRV95OZ5+9rHGSjW95z1x1wmwfTqEug@mail.gmail.com>
if i recall correctly, V1 of Unix had time measured in milliseconds.
were folks that sure that this would change before wrap-around?
> On Sep 9, 2022, at 5:06 AM, Douglas McIlroy <douglas.mcilroy@dartmouth.edu> wrote:
>
>> Well, you can imagine what happened when the leading digit changed
>> from an ASCII "9" to an ASCII "1". Oops.
>
> I first saw a time-overflow bug more than 60 years ago. Accounting
> went haywire in the Bell Labs' comp center on day 256 of the year,
> when the encoded output of a new time clock reached the sign bit.
>
> Doug
next prev parent reply other threads:[~2022-09-09 17:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-09 12:06 Douglas McIlroy
2022-09-09 17:16 ` Andrew Hume [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-09-09 18:53 Norman Wilson
2022-09-08 22:28 [TUHS] " Dave Horsfall
2022-09-08 23:48 ` [TUHS] " Rob Pike
2022-09-09 0:11 ` Dan Cross
2022-09-09 4:24 ` Rob Pike
2022-09-11 0:09 ` Dave Horsfall
2022-09-09 3:29 ` Seth Morabito
2022-09-09 7:03 ` Michael Kjörling
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