Date: Sat, 06 Jun 2009 08:09:16 +0200 From: Joel Dahl <joel@FreeBSD.org> To: Doug Barton <dougb@FreeBSD.org> Cc: Frank Behrens <frank@ilse.behrens.de>, freebsd-net@freebsd.org, roberto@freebsd.org, Edwin Groothuis <edwin@freebsd.org> Subject: Re: NTP - default /etc/ntp.conf Message-ID: <4A2A080C.1040402@FreeBSD.org> In-Reply-To: <4A297BB4.80002@FreeBSD.org> References: <200906051424.n55EOIrM012619@post.behrens.de> <4A297BB4.80002@FreeBSD.org>
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Doug Barton skrev: > Frank Behrens wrote: >> Edwin Groothuis <edwin@freebsd.org> wrote on 5 Jun 2009 22:44: >>> After pondering at conf/58595, I came with this text. >>> >>> The ntpd is not enabled by default, so the fact that the servers >>> are commented out should not be an issue. >>> ... >>> +# server pool.ntp.org >>> +# server pool.ntp.org >>> +# server pool.ntp.org >> Isn't it better to use different entries? >> server 0.pool.ntp.org >> server 1.pool.ntp.org >> server 2.pool.ntp.org >> >> To be sure that the IP addresses are different. >> See >> http://www.pool.ntp.org/en/use.html > > I agree with this suggestion, as well as the others about adding the > default restrictions and the fallback local clock. Bruce is right > about the ntp.drift file name, however we already have existing stuff > that mentions ntpd.drift, and since it's specified on the command line > in rc.conf the problems of what it says in the code are bypassed. > > OTOH, we should use ntp.conf (no d) since that is what is referenced > in the man page for ntpd, and the man page for the conf file is > ntp.conf. (It's currently wrong in the Makefile in your patch.) > > One more thing, it was said some time ago that due to a quirk in how > ntpd works on our system that adding the following to the server line > makes it work more efficiently: > > server foo iburst maxpoll 9 I've read the same somewhere and I've been using "iburst maxpoll 9" for a long time. If this is correct, I think it should go into the default ntp.conf. -- Joel
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