On Fri, Feb 04, 2011 at 12:09:58PM -0800, Hal Murray wrote:
> 
> [email protected] 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 
> them?
> 
> 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 
> GPS devices.

I was using gpsd with both servers.


Kurt

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