From: David Newall <davidn@davidnewall.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Nick Andrew <nick@nick-andrew.net>,
Linas Vepstas <linasvepstas@gmail.com>,
david@lang.hm, Kyle Moffett <kyle@moffetthome.net>,
Ben Goodger <goodgerster@gmail.com>,
Robert Hancock <hancockr@shaw.ca>,
linux-kernel@vger.kernel.org,
"Jeffrey J. Kosowsky" <jeff@kosowsky.org>,
MentalMooMan <slashdot@jameshallam.info>,
Travis Crump <pretzalz@techhouse.org>,
burdell@iruntheinter.net
Subject: Re: Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009
Date: Wed, 07 Jan 2009 20:48:11 +1030 [thread overview]
Message-ID: <49648163.9060007@davidnewall.com> (raw)
In-Reply-To: <20090107095419.70b78dc7@lxorguk.ukuu.org.uk>
Alan Cox wrote:
> As far as the kernel and leapseconds go - remember the kernel RTC support
> does not know about leap seconds
>
True but irrelevant because the RTC returns a timestamp. And it's
quietly understood that the RTC is only an approximation.
The remaining fly in the ointment, if indeed the NTP client doesn't
already do what I've outlined, is that leap seconds aren't reckoned into
NTP broadcasts. As intimated, this is correctable using leap second
information from zoneinfo.
Even though this is manifestly not a kernel issue, I'll work up a patch
for ntpdate (apparently what I use) and post her, which I'm sure will be
useful for all other NTP clients.
However it is now clear that no special kernel support is required for
leap-seconds, and any such code that's been incorporated needs to be
removed. Removed I say!
next prev parent reply other threads:[~2009-01-07 10:18 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-02 19:25 Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009 Linas Vepstas
2009-01-02 20:04 ` Diego Calleja
2009-01-02 20:25 ` Robert Hancock
2009-01-03 6:32 ` David Newall
2009-01-03 6:37 ` Ben Goodger
2009-01-04 8:43 ` David Newall
2009-01-04 9:00 ` Kyle Moffett
2009-01-04 10:03 ` David Newall
2009-01-04 11:13 ` david
2009-01-04 23:15 ` David Newall
2009-01-04 23:25 ` Chris Adams
2009-01-05 0:01 ` David Newall
2009-01-05 0:41 ` Alan Cox
2009-01-05 8:43 ` David Newall
2009-01-05 19:47 ` Alan Cox
2009-01-05 0:29 ` david
2009-01-04 23:37 ` David Newall
2009-01-05 1:05 ` david
2009-01-05 0:14 ` David Newall
2009-01-05 0:21 ` Ben Goodger
2009-01-05 6:34 ` David Newall
2009-01-05 23:03 ` Linas Vepstas
2009-01-05 0:44 ` Alan Cox
2009-01-05 5:48 ` Linas Vepstas
2009-01-05 14:33 ` Nick Andrew
2009-01-05 16:08 ` Linas Vepstas
2009-01-05 17:51 ` david
2009-01-05 17:42 ` Linas Vepstas
2009-01-06 2:27 ` john stultz-lkml
2009-01-06 4:53 ` Linas Vepstas
2009-01-06 5:00 ` Linas Vepstas
2009-01-06 19:40 ` [ntpwg] " M. Warner Losh
2009-01-06 19:50 ` M. Warner Losh
2009-01-07 3:50 ` Danny Mayer
2009-01-07 4:52 ` Linas Vepstas
2009-01-07 10:03 ` David Newall
2009-01-07 17:24 ` M. Warner Losh
2009-01-08 16:51 ` Magnus Danielson
2009-01-07 14:34 ` Danny Mayer
2009-01-07 15:42 ` Linas Vepstas
2009-01-07 19:23 ` Danny Mayer
2009-01-07 16:04 ` john stultz
2009-01-07 17:36 ` M. Warner Losh
2009-01-07 17:39 ` M. Warner Losh
2009-01-07 19:31 ` Alan Cox
2009-01-07 19:42 ` M. Warner Losh
2009-01-08 3:57 ` Danny Mayer
2009-01-08 4:42 ` M. Warner Losh
2009-01-08 10:48 ` Alan Cox
2009-01-08 10:56 ` Alan Cox
2009-01-08 22:22 ` David Mills
2009-01-08 15:02 ` M. Warner Losh
2009-01-08 18:57 ` Marshall Eubanks
2009-01-08 20:09 ` Steve Allen
2009-01-12 16:11 ` Pavel Machek
2009-01-12 17:07 ` [ntpwg] " M. Warner Losh
2009-01-12 21:45 ` Valdis.Kletnieks
2009-01-06 2:31 ` Nick Andrew
2009-01-06 1:59 ` David Newall
2009-01-06 2:18 ` Chris Adams
2009-01-06 2:51 ` Nick Andrew
2009-01-06 9:40 ` Alan Cox
2009-01-07 1:17 ` Nick Andrew
2009-01-07 9:37 ` Alan Cox
2009-01-07 9:46 ` David Newall
2009-01-07 9:54 ` Alan Cox
2009-01-07 10:18 ` David Newall [this message]
2009-01-07 10:52 ` Alan Cox
2009-01-07 13:45 ` David Newall
2009-01-07 14:10 ` Alan Cox
2009-01-07 14:36 ` David Newall
2009-01-07 15:40 ` Alan Cox
2009-01-10 9:46 ` David Newall
2009-01-07 22:13 ` Chris Adams
2009-01-07 13:33 ` Chris Adams
2009-01-07 13:37 ` Alan Cox
2009-01-07 14:12 ` David Newall
2009-01-07 14:09 ` David Newall
2009-01-07 21:42 ` Chris Adams
2009-01-04 11:35 ` Valdis.Kletnieks
2009-01-05 0:08 ` David Newall
2009-01-06 3:53 ` Valdis.Kletnieks
2009-01-04 17:20 ` Kyle Moffett
2009-01-03 7:00 ` Chris Adams
2009-01-04 8:41 ` David Newall
2009-01-02 20:29 ` Linas Vepstas
[not found] ` <8752a8760901021328t545a0327v58faebe1e921680a@mail.gmail.com>
2009-01-02 21:29 ` Ben Goodger
2009-01-03 0:21 ` Chris Adams
2009-01-03 2:23 ` Duane Griffin
2009-01-03 3:45 ` Linas Vepstas
2009-01-03 4:41 ` [PATCH] " Chris Adams
2009-01-03 4:52 ` Duane Griffin
2009-01-03 18:01 ` [PATCH] v2 " Chris Adams
2009-01-03 19:04 ` Duane Griffin
2009-01-03 20:01 ` Linas Vepstas
2009-06-08 2:18 ` Ben Hutchings
2009-06-18 22:34 ` Chris Friesen
2009-06-18 22:58 ` Ben Hutchings
2009-06-18 23:48 ` Chris Friesen
2009-01-06 2:21 ` john stultz-lkml
2009-01-06 2:25 ` Chris Adams
2009-01-06 4:35 ` Linas Vepstas
2009-01-03 3:49 ` Linas Vepstas
2009-01-03 4:02 ` Ben Goodger
2009-01-03 4:46 ` Duane Griffin
2009-01-03 4:50 ` Ben Goodger
2009-01-03 22:58 ` Jeffrey J. Kosowsky
[not found] <fa.dw2l5ZM+UL3xoF6IYh5RLMmbYfw@ifi.uio.no>
[not found] ` <fa.XOM1F85uBvmj4QzZKaDu36nYBk0@ifi.uio.no>
[not found] ` <fa.rviZJBmVqkAE5uxDjhJOpIuKT4g@ifi.uio.no>
[not found] ` <fa.OPVERUiJ763jH2/QynTxgBgoKYw@ifi.uio.no>
[not found] ` <fa.v3FUjJ43bw2G7KiZGaxqL3tD4xo@ifi.uio.no>
[not found] ` <fa.BrNhgY8S+TEOLMiPd27M7YHo9bI@ifi.uio.no>
2009-01-04 16:15 ` Sitsofe Wheeler
2009-01-04 17:26 ` Kyle Moffett
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