cvs commit: src/usr.bin/vmstat vmstat.c src/usr.bin/w w.c

[M. Warner Losh]

In message: <20051021210822.E4739 at delplex.bde.org>
            Bruce Evans <bde at zeta.org.au> writes:
: Complain to wollman if this file is not updated. :-)

I can't complain to Wollman if I have a system that's at a customer
site that's been running for a while before the leap second is
announced.  Such systems need a way to get and keep a table.

: This is not a problem for times returned by clock_gettime(), since those
: times are in the past.
: 
: 64-bit time_t's and/or ints also permit asking the time library to do
: impossible predictions.

It is a problem.  If I boot a system today, the authors of the
software still cannot know the example that I gave.  Since there's no
leap second table by default, the system may get the answer wrong.
That's what is so evil about leap seconds.  You can't plan more than 6
months into the future.

Warner