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From: Laurent Bercot <ska-dietlibc@skarnet.org>
To: musl@lists.openwall.com
Subject: Re: Pending patches/issues before 0.9.15 release?
Date: Thu, 21 Nov 2013 22:54:02 +0000	[thread overview]
Message-ID: <528E8F0A.6030303@skarnet.org> (raw)
In-Reply-To: <20131121203431.GT24286@brightrain.aerifal.cx>

> A glitch which would never have happened without the abominations
> which are leap seconds. Really, the core cause was the NTP folks'
> agenda in forcing leap seconds onto a POSIX time model where they
> don't work, resulting in discontinuous, non-monotonic clock jumps and
> time ambiguity.

  Looks like we totally agree on this :)


> If they'd instead smoothed out the difference between
> POSIX seconds and SI seconds over the whole interval between leap
> seconds as a tiny clock drift, reliable conversion back to TAI seconds
> could be performed as a presentation step without breaking software
> doing (valid, per POSIX) interval timing with time_t and
> timeval/timespec.

  ... but not on the conclusion. My own conclusion is that a linear
time scale should have been adopted for system clocks, and conversions
from/to UTC should be an entirely userland, only-for-display thing.
System operations should be able to depend on linear time, and only
humans should care about human-oriented time such as UTC. This is why
I always set up my system clock as TAI-10.

-- 
  Laurent



  reply	other threads:[~2013-11-21 22:54 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-21  1:30 Rich Felker
2013-11-21  9:40 ` Laurent Bercot
2013-11-21 16:39   ` Rich Felker
2013-11-21 16:55     ` Szabolcs Nagy
2013-11-21 19:27     ` Laurent Bercot
2013-11-21 19:44       ` Rich Felker
2013-11-21 20:07         ` Daniel Cegiełka
2013-11-21 20:34           ` Rich Felker
2013-11-21 22:54             ` Laurent Bercot [this message]
2013-11-24 11:06         ` zoneinfo file parsing in __tz.c Laurent Bercot
2013-11-24 12:22           ` Szabolcs Nagy
2013-11-21 22:54       ` Pending patches/issues before 0.9.15 release? Szabolcs Nagy
2013-11-21 23:04         ` Laurent Bercot
2013-11-22  0:18           ` Szabolcs Nagy
2013-11-21 23:05         ` Rich Felker
2013-11-21 19:21 ` John Spencer
2013-11-23 22:02 ` Rich Felker

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