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
next prev parent 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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