nanog mailing list archives
Re: leap second outage
From: Mikael Abrahamsson <swmike () swm pp se>
Date: Wed, 1 Jul 2015 07:38:49 +0200 (CEST)
On Wed, 1 Jul 2015, Jean-Francois Mezei wrote:
However, in systems that expect tightly synchronized clocks, they would want all the nodes to make the NTP adjustement at the same time.
This is both an operating system and application problem. http://infiniteundo.com/post/25326999628/falsehoods-programmers-believe-about-time http://infiniteundo.com/post/25509354022/more-falsehoods-programmers-believe-about-timeThis is similar to the jiffycounter wrapping, since this doesn't happen that often, it's not commonly tested for. Good way is to start the jiffy counter so it wraps after 10 minutes of uptime. That way you'll run into any bugs quickly. Either we should abolish the leap second or we should make leap second adjustments (back and forth) on a monthly basis to exercise the code.
This is a hard sell though... -- Mikael Abrahamsson email: swmike () swm pp se
Current thread:
- leap second outage frnkblk (Jun 30)
- Re: leap second outage Stefan (Jun 30)
- Re: leap second outage Josh Luthman (Jun 30)
- Re: leap second outage Nicholas Suan (Jun 30)
- Re: leap second outage Joe (Jun 30)
- Re: leap second outage Harlan Stenn (Jun 30)
- Re: leap second outage Jean-Francois Mezei (Jun 30)
- Re: leap second outage Mikael Abrahamsson (Jun 30)
- Re: leap second outage Harlan Stenn (Jun 30)
- Re: leap second outage Colin Johnston (Jun 30)
- Re: leap second outage Jimmy Hess (Jul 01)
- Re: leap second outage Harlan Stenn (Jul 01)
- Re: leap second outage Stefan (Jun 30)
- RE: leap second outage frnkblk (Jul 01)
- <Possible follow-ups>
- Re: leap second outage Dovid Bender (Jun 30)
- Re: leap second outage Justin Paine via NANOG (Jul 01)
- Re: leap second outage Dovid Bender (Jun 30)
- Re: leap second outage Tim Raphael (Jul 01)
- Re: leap second outage Justin Paine via NANOG (Jul 01)