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Bug 137705 - [TRACKER] UTC vs. TAI problems
Summary: [TRACKER] UTC vs. TAI problems
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: High normal (vote)
Assignee: No maintainer - Look at https://wiki.gentoo.org/wiki/Project:Proxy_Maintainers if you want to take care of it
URL:
Whiteboard:
Keywords: Tracker
Depends on: 78351 111555 124188 125755 137708 183716 184484
Blocks:
  Show dependency tree
 
Reported: 2006-06-23 03:49 UTC by Sascha Silbe
Modified: 2009-10-08 19:57 UTC (History)
4 users (show)

See Also:
Package list:
Runtime testing required: ---


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Description Sascha Silbe 2006-06-23 03:49:21 UTC
A whole bunch of packages in Gentoo has problems with the difference between TAI (time relative to cesium clocks) and UTC (time relative to astronomical obversations).
For an explanation of this difference and it's effects, please see http://www.thedjbway.org/clockspeed/leapsecs.html and http://cr.yp.to/proto/utctai.html.

The problems I've encountered in Gentoo so far were:
- OpenNTPd not setting the clock correctly (as compared with my radio controlled wrist watch)
- test suite failures due to hardcoded, not leap second-adjusted timestamps

I'm creating this tracker bug in order to group those - otherwise apparently unrelated - bugs together.
Comment 1 Sascha Silbe 2006-06-23 04:01:41 UTC
Bug #109472 is/was somewhat related. It's about updating the leap seconds table contained in glibc.
Comment 2 Sascha Silbe 2006-06-23 04:07:18 UTC
Wikipedia has a good description of TAI [1], also noting that UTC in fact is derived from TAI, so you might see why it's important to get the leap second correction right (instead of just ignoring it).

[1] http://en.wikipedia.org/wiki/Atomic_time
Comment 3 Sascha Silbe 2006-07-18 12:22:39 UTC
Fix dependancy sense (was inverted).
Comment 4 Alastair Tse (RETIRED) gentoo-dev 2006-07-18 16:30:35 UTC
err, what has curl got to do with this bug? the cookie timestamp was expired, not off by a leap second.
Comment 5 Sascha Silbe 2006-07-21 10:28:08 UTC
See bug #111555 comment #23 for an explanation of why it's listed on this bug.

Comment 6 Alastair Tse (RETIRED) gentoo-dev 2006-07-23 14:00:20 UTC
so what exactly is the solution to all this?
Comment 7 Jakub Moc (RETIRED) gentoo-dev 2006-08-26 01:05:22 UTC
(In reply to comment #6)
> so what exactly is the solution to all this?

+1 

Comment 8 DEMAINE Benoît-Pierre, aka DoubleHP 2007-01-17 06:03:56 UTC
The fact we dont have a solution shall not prevent talking about the issue. That's why BTS exist: list problemes that do not have solution yet.

Please add "TRACKER" to "Keywords" field.
Comment 9 Víctor Ostorga (RETIRED) gentoo-dev 2009-10-08 19:57:40 UTC
Closing due to depending bugs being fixed.