>>>>> "Mark" == Mark D Baushke <[EMAIL PROTECTED]> writes:
Mark> It does not sound to me as though posix/UTC is useful if it is Mark> different than the TAI (Atomic Time) derived from cesium clocks. Agreed. None the less it is what one gets by default on posix boxen, unless a right/ zonefile is specified. Mark> The current difference between TAI and UTC is 33 leap seconds Mark> as of the 2006. (see http://www.ece.udel.edu/~mills/leap.html). Mark> If posix/UTC time is only 23 seconds from UTC, then where are Mark> the other 10 seconds? POSIX time matches UTC at 1970 Jan 1. The other 10 leap seconds predate 1970. GPS time does the same thing: it matches UTC at its epoch and diverges as of the next leap second after that. So, in fact, TAI, GPS, POSIX and UTC are all different times. Mark> The CVS sources try to do their best to ignore the local Mark> timzeone. Of course. But I need to think a bot more about the rest of these details before replying to them. Mark> For some reason, my GNU/Linux box sees a Mark> difference of 22 seconds instead of the 23 seconds you see. You probably have an older version of the zonefiles. The last leap second was 2005 Dec 31 23:59:60 UTC; your zonefiles probably predate the announcement of that leap second. (Ie they are at least fifteen months out of date. :) (Many dists have now split the zonefiles into their own package so that they can be updated more regularly than libc is generally updated. That started happening last year after the announcement of the 2005 leap second.) One thing I just realized, though, is that the problem only occurs if there is a change between posix and right timezones since the last up or co. Ie, if the co (or the last up) is done under a posix tz and then up is run under a right tz, or visa versa. The repos I first noticed doing this were created by ebuilds which grab the source from cvs rather than a tar. Obviously gentoo's emerge must unset or override TZ. I'll do some more testing and get back. -JimC -- James Cloos <[EMAIL PROTECTED]> OpenPGP: 0xED7DAEA6 _______________________________________________ info-cvs mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/info-cvs
