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- Newsgroups: comp.protocols.time.ntp
- Path: sparky!uunet!caen!sdd.hp.com!elroy.jpl.nasa.gov!stevo
- From: stevo@elroy.Jpl.Nasa.Gov (Steve Groom)
- Subject: xntp3, DOSYNCTODR_SUCKS
- Message-ID: <1992Nov9.214008.2068@elroy.jpl.nasa.gov>
- Sender: news@elroy.jpl.nasa.gov (Usenet)
- Nntp-Posting-Host: max.jpl.nasa.gov
- Organization: Image Analysis Systems Group, JPL
- Date: Mon, 9 Nov 1992 21:40:08 GMT
- Lines: 43
-
- I installed xntp3 last week. We've been running an older xntp (v2) for
- a long time and it appeared quite stable, but I wanted to upgrade since
- a lot of other machines around here were installing the newer version
- and having trouble if they didn't put the "version 2" for our hosts in
- their config files. Easier to upgrade than fixing everyone else,
- I thought.
-
- I have a question about the DOSYNCTODR_SUCKS definition in the config file.
- We are running a bunch of Suns, and we've been using tickadj to turn off
- dosynctodr when the system boots. Using that, everything has been
- working just fine. In particular, when the machine comes back up
- after being powered off, the clock seemed to be set to a reasonable value,
- or at least I didn't notice that it was far enough off to be a problem.
- In xntp3, this DOSYNCTODR_SUCKS thing has a comment that seems
- to indicate that if I don't define this, the hardware clock doesn't get
- updated by xntpd. Is this something new in v3? Also, there is a comment
- that says that I probably only need this if I'm not on a network. It seems
- to me that if this is indeed a problem, the machine could wake up
- with the clock far enough out of whack that xntpd would give up, making
- this an issue for "networked" machines as well.
-
- I initially xntpd (v3) with this definition disabled. When I booted the
- machine after being powered off over the weekend, the clock was 14
- seconds off. This isn't great, but it sounds reasonable for a
- battery-powered CPU clock. It looks to me like the CPU's hardware
- clock must have been OK when the system went down. Since I got this
- fairly reasonable behavior with DOSYNCTODR_SUCKS undefined, what is
- the benefit of having it defined?
-
- One other comment about xntpd v3 compared to v2: boy, does that
- thing like to make a lot of noise in the logfiles! There's now all
- this status information being sent to syslog at LOG_INFO, which in
- steady-state used to only have the hourly drift messages. I would still
- like to see the drift info, but not all that other junk. In order
- to do this, I'll have to go hack the code or just forego the drift messages
- by fixing syslog.conf. Has anyone else noticed this verbosity? Will
- it fade away after everything settles down, or should I do something
- now to avoid filling all my root partitions?
-
- thanks
- --
- Steve Groom, stevo@elroy.jpl.nasa.gov
- Jet Propulsion Laboratory, Pasadena, CA
-