Subject: Re: Clock drift on Miatas
To: None <email@example.com>
From: Carl Lowenstein <firstname.lastname@example.org>
Date: 05/30/2000 08:38:24
> From email@example.com Mon May 29 14:20 PDT 2000
> To: "Charles M. Hannum" <firstname.lastname@example.org>
> Cc: Hal Murray <email@example.com>, firstname.lastname@example.org
> Subject: Re: Clock drift on Miatas
> Date: Mon, 29 May 2000 14:20:28 -0700
> From: Hal Murray <email@example.com>
> > > I think xntpd needs the clock to be within 500 ppm or the PLL won't
> > > lock up.
> > Is that actually documented anywhere?
> I didn't find any clean statement in the html or man page.
> It seemed pretty well known in the ntp community. A couple of months
> ago I was trying to track down a Linux clock bug on these machines.
> One of the first responses I got back pointed out that limit. (That
> may be only for the new ntpd vs older xntpd.)
states "the NTP discipline algorithm ... can correct frequency errors
as large as 30 seconds per day." This is 347 ppm.