nanog mailing list archives
RE: F-ckin Leap Seconds, how do they work?
From: "Keith Medcalf" <kmedcalf () dessus com>
Date: Tue, 03 Jul 2012 13:06:11 -0600
God damn that's a horrid piece of shit web site. You have to disable security and permit remote code execution or it does not work. What a crock! --- () ascii ribbon campaign against html e-mail /\ www.asciiribbon.org
-----Original Message----- From: Nick Hilliard [mailto:nick () foobar org] Sent: Tuesday, 03 July, 2012 12:33 To: Saku Ytti Cc: nanog () nanog org Subject: Re: F-ckin Leap Seconds, how do they work? On 03/07/2012 18:59, Saku Ytti wrote:Leap bugs are NOT known. Most people have no idea unixtime is not monotonically increasing. I had no idea myself until sunday, I had assumed we really go 59 -> 60 -> 00, but we go 59 -> 59 -> 00. So 59.1 can happen before or after 59.2. To me this is fundamentally and inherently broken.Well, yeah, it's not obvious that a minute can have anywhere between 59 and 62 seconds. Certainly if POSIX were being redesigned, they ought to consider using libtai. Google's approach to this is interesting:http://googleblog.blogspot.ie/2011/09/time-technology-and-leaping-seconds.html i.e. controlled clock slew until the correct offset is reached, thereby allowing their developers to assume a monotonic system clock. Nick
Current thread:
- Re: F-ckin Leap Seconds, how do they work?, (continued)
- Re: F-ckin Leap Seconds, how do they work? Scott Howard (Jul 04)
- Re: F-ckin Leap Seconds, how do they work? Dave Hart (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Peter Lothberg (Jul 05)
- Re: F-ckin Leap Seconds, how do they work? Saku Ytti (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? valdis . kletnieks (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Saku Ytti (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Owen DeLong (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Saku Ytti (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Nick Hilliard (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Saku Ytti (Jul 03)
- 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? Owen DeLong (Jul 03)
- Re: F-ckin Leap Seconds, how do they work? Saku Ytti (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? Owen DeLong (Jul 03)
- 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? Majdi S. Abbas (Jul 03)