[Pool] [Fwd: Re: Linux , PPS, and Me]
murray at ntp.org
Fri Feb 4 20:09:58 UTC 2011
kurt at roeckx.be said:
> I only tried shm once, and it really gave me crappy results. I'm not sure
> if the problem was with using shm or the gps.
What software were you using between the GPS device and SHM?
If you are using gpsd, ntpd needs 2 "servers". Slot 0 gets timing from the
serial port. Slot 1 gets the timing from the PPS. Were you using both of
gpsd uses an ioctl that is only implemented (I think) on Linux. It's not as
good as the kernel mode PPS, but a lot better than the serial mode from most
These are my opinions, not necessarily my employer's. I hate spam.
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