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From: Rich Felker <dalias@aerifal.cx>
To: musl@lists.openwall.com
Subject: Re: Pending patches/issues before 0.9.15 release?
Date: Thu, 21 Nov 2013 15:34:31 -0500	[thread overview]
Message-ID: <20131121203431.GT24286@brightrain.aerifal.cx> (raw)
In-Reply-To: <CAPLrYEQLgmK98KnQ6AhKA8i-6x8WWjqb-LE8EVxs8G7iKQEdHQ@mail.gmail.com>

On Thu, Nov 21, 2013 at 09:07:08PM +0100, Daniel Cegiełka wrote:
> 2013/11/21 Rich Felker <dalias@aerifal.cx>:
> 
> > I'm a pretty hardcore anti-leapseconds / pro-POSIX-seconds guy,
> 
> I think the big problem is the lack of proper approach to leapseconds
> and unfortunately it ends this way:
> 
> http://www.wired.com/wiredenterprise/2012/07/leap-second-glitch-explained/

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. 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.

> 25 seconds is a lot :/

25 seconds is a lot in one day. It's not a lot in 43 years. It's much
smaller than the error tolerance for audio and video timing, and
unlikely to matter for anything except physics experiments.

Rich


  reply	other threads:[~2013-11-21 20:34 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 [this message]
2013-11-21 22:54             ` Laurent Bercot
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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