nanog mailing list archives
Re: F-ckin Leap Seconds, how do they work?
From: Jay Ashworth <jra () baylink com>
Date: Tue, 3 Jul 2012 15:33:42 -0400 (EDT)
----- Original Message -----
From: "valdis kletnieks" <valdis.kletnieks () vt edu>
When the published API has been "the system clock is in UTC" for some 3 decades, I hardly think it's acceptable to call apps "buggy" for assuming that the system clock is in fact using UTC and breaking if you switch it to something that's not UTC. And the new time *has* to have different semantics than UTC, because if it doesn't then what's the point of changing it?
Correct. It's very likely that there is *no* sufficiently compelling application requirement that justifies switching NTP from UTC to UT1/TAI. So far as I can tell, the *only* requirement is "I need to be able to calculate unixtime<->ISO8601 reliably to the second for times further away than the next possible leapsecond"; I have not had pointed out to me yet an application which actually requires that; I'm 99 44/100% certain that there isn't one with a sufficiently compelling story to break 3 decades of code. Cheers, -- jra -- Jay R. Ashworth Baylink jra () baylink com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
Current thread:
- RE: F-ckin Leap Seconds, how do they work?, (continued)
- RE: F-ckin Leap Seconds, how do they work? Keith Medcalf (Jul 03)
- RE: F-ckin Leap Seconds, how do they work? Tony Finch (Jul 03)
- RE: F-ckin Leap Seconds, how do they work? Peter Lothberg (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Marshall Eubanks (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? George Herbert (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Randy Fischer (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Tony Finch (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Joel jaeggli (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? valdis . kletnieks (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Joel jaeggli (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Jay Ashworth (Jul 03)
- Message not available
- Fwd: Re: F-ckin Leap Seconds, how do they work? shawn wilson (Jul 03)
- Re: Fwd: Re: F-ckin Leap Seconds, how do they work? valdis . kletnieks (Jul 03)
- Re: Fwd: Re: F-ckin Leap Seconds, how do they work? Chris Adams (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Jay Ashworth (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Peter Lothberg (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Peter Lothberg (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Tony Finch (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Eugen Leitl (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Leo Bicknell (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Jay Ashworth (Jul 03)