On Tue, 2 Nov 2021 11:52:21 -0500, Paul Gilmartin <[email protected]> wrote:
>z/OS shirks the issue by making user address spaces non-dispatchable during a >leap second. I wouldn't say "shirks". Perhaps "accommodates" might be a better word. If you don't configure leap seconds in the timing network defintition (CTN), STP thinks Coordinated Server Time (CST) is wrong and begins to steer out the 1-second difference. As Tim noted, that takes about 7 hours. Those with strict time stamp requirements can't tolerate it being wrong for 7 hours, so suspending the application for one second is preferable. > z/VM? Tim pointed to my article. z/VM will give the wrong time if you have leap seconds configured in the CTN. >I have seen some discussion of inserting leap seconds at 23:59:60 local >time rather than UTC. Bad Idea. The discussion getting more traction in the scientific community is to abandon the leap second entirely. Alan Altmark IBM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
