[ntp:questions] Re: kernel precision on Linux
Terje Mathisen
terje.mathisen at hda.hydro.com
Fri Jan 30 17:59:55 UTC 2004
Nicholas Garfield wrote:
>>The rule is: use NTP compiled with STA_NANO support on nanokernel and
>>NTP compiled without STA_NANO on stock kernel:)
>
>
> Do any operating systems come with pps-kit, nanokernel and STA_NANO support
> by default on the stock kernel distribution?
The closest you can get, afaik, is to use FreeBSD.
However, even on that os, you do have to enter a few commands to enable
the ns-level timestamping of serial and parallel port events:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-building.html
Insert one line in the kernel config file:
options PPS_SYNC
then follow the instructions on that handbook page.
Terje
--
- <Terje.Mathisen at hda.hydro.com>
"almost all programming can be viewed as an exercise in caching"
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