On Wed, Jul 4, 2012 at 11:06 PM, Mauro Santos <registo.mailling@gmail.com> wrote:
On 04-07-2012 21:00, Tom Gundersen wrote:
On Wed, Jul 4, 2012 at 9:06 PM, Kevin Chadwick <ma1l1ists@yahoo.co.uk> wrote:
If you have a mercurial/git installation even in a small group, I am sure you'll prefer accurate timestamps in your commit history. And the list goes on...
I believe an RTC is perfectly capable of that.
I tried to find some data on what to expect from RTC's. I was not very successful, except finding people citing 80-100PPM as typical drift rates (~8 secs/day).
From data I have access to, taken from machines running ntpd, I can say the following about the drift in PPM stored in ntpd's drift file:
my laptop: -9.699 machine 1: -8.762 machine 2: -443.266 machine 3: -35.417
Machine 1 is the newest and machine 3 is the oldest.
One more data point: my wrist watch is off by about 20ppm (unless I forget to wind it, then it is more ;-) ). -t