CentOS - Jun 2010 - ls -lrt reversal

My CentOS box with:
  $ uname -r
  2.6.18-164.6.1.el5

gets the file order wrong with:
   ls -lrt *
.
Two files that were last modified in the same
second are shown in order that is the reverse
of the order in which they were actually last
modified.  Note also that the later file was
first created after the earlier file was last
modified.

Is the precision of this only to the second?

Mike.

On Wed, Jun 09, 2010 at 03:06:30PM +0000, Michael D. Berger wrote:
>    ls -lrt *
> Is the precision of this only to the second?
Yes.  File timestamps are reported by the stat() call as time_t values,
which are "seconds past 00:00:00 1/1/1970".  So "ls" can
only sort to
a 1 second precision.

-- 

rgds
Stephen