nanog mailing list archives
Re: ntp config tech note
From: Adrian Chadd <adrian () creative net au>
Date: Fri, 21 May 2004 11:48:01 +0800
On Thu, May 20, 2004, C. Jon Larsen wrote:
I checked and the cron job usually adjusts the clock by about 0.2 to 0.3 sec every hour. Sure thats probably more than ntpd would adjust it in any one iteration were ntpd running ... according to: http://www.eecis.udel.edu/~mills/ntp/html/ntpdate.html its not too kooky or dangerous to use ntpdate + cron rather than ntpd; 0.5 sec is given as a cutoff for it being less disruptive when making clock adjustments. Its interesting to hear what other folks are doing. I had assumed folks normally don't run ntpd on each and every server and that ntpdate + cron was much preferred; maybe I am off-base.
ntpdate can set my clock backwards. ntpd, after you've first run it, won't. If you're using this to combine logs between machines you may not appreciate an hourly backwards step in time. :) adrian -- Adrian Chadd I'm only a fanboy if <adrian () creative net au> I emailed Wesley Crusher.
Current thread:
- Re: ntp config tech note, (continued)
- Re: ntp config tech note Kevin Oberman (May 20)
- Re: ntp config tech note Robert E. Seastrom (May 20)
- Re: ntp config tech note Simon Lockhart (May 20)
- Re: ntp config tech note Randy Bush (May 20)
- Re: ntp config tech note Jared Mauch (May 20)
- Re: ntp config tech note James Edwards (May 20)
- Re: ntp config tech note C. Jon Larsen (May 20)
- Re: ntp config tech note Jared Mauch (May 20)
- Re: ntp config tech note Adrian Chadd (May 20)
- Re: ntp config tech note C. Jon Larsen (May 20)
- Re: ntp config tech note Adrian Chadd (May 20)
- Re: ntp config tech note Randy Bush (May 20)
- Re: ntp config tech note sthaug (May 21)
- Re: ntp config tech note C. Jon Larsen (May 21)
- Re: ntp config tech note Eric A. Hall (May 21)
- Re: ntp config tech note Mike Leber (May 24)
- Re: ntp config tech note Crist Clark (May 21)
- Re: ntp config tech note james edwards (May 21)
- Re: ntp config tech note Kevin Oberman (May 20)
- Re: ntp config tech note Charles Sprickman (May 20)
- Re: ntp config tech note Pekka Savola (May 21)
- Re: ntp config tech note John Kristoff (May 20)