On 14/02/2017 7:26 AM, Bob Camp wrote:
Hi
A direct port might be a +/- 100 ns sort of thing most of the time and a +/-10
us
thing every so often under some OS’s. Most desktop operating systems are not
designed to prioritize random pin interrupts. A dirt cheap MCU coded with a few
(hundred) lines of assembly code may be a better option than a typical desktop.
Complicating this further is the degree to which some OS’s can be directly or
indirectly optimized. Install *this* package and it all goes nuts. Install that
package
and not much happens ….
Bob
Hence, wouldn't Best Practice be boxes loaded with only the bare OS and
software for the time-related tasks?
As in:
- a dedicated machine/box for unencumbered acceptance of PPS, and
- for systems with a business need, a dedicated NTP server/box
disciplined by the PPS source (with dedicated communication), while
maintaining internet NTP sources as backup for when the PPS source fails?
Is there a better way?
Other considerations?
Michael
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
