David Taylor wrote:
On 21/02/2015 07:04, William Unruh wrote:
[]
orphan mode is about a group of computers. "Orphan Mode allows a group
of ntpd processes to automonously select a leader in the event that all
real time sources become unreachable (i.e. are inaccessible)."
chrony's is that you can enter the time by hand (Ie, by typing a current
time and hitting enter) on a single machine. You are the "remote
clock". Now, how useful that
is now adays is open to question, but in the past with telephone modems
and flaky connections it was worth something. And if you are setting up
something on the Hebrides or on a buoy in the Atlantic where no
connection of anykind is possible, it could be useful.
Ie, it IS different from orphan mode.
"Things chronyd can do that ntpd can?t: chronyd provides support for
isolated networks whether the only method of time correction is manual
entry (e.g. by the administrator looking at a clock)."
The claim is for "networks", not single machines.
When I was on dialup with Demon, I used chrony on the
dialup pc and my network of several pcs, mostly with
ntpd, synced to that. I'd have a problem looking up the
logs that far back but I don't think drift from chrony
offline was above a few ms. My pcs in the late 80s
through early 90s seemed to have better system clocks
than modern pcs and also had provision to use an
external source as system clock.
David
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