Re: [gpsd-users] Speeding up autobauding

[Alexander Carver]

On 10/19/2012 12:51, Eric S. Raymond wrote:
> Alexander Carver <address@hidden>:
> > > I can narrow that range down a bit for you.  I'm still running 3.4 with
> > > my receiver set for 38400.  Autobaud takes about five to six seconds
> > > before it captures the port data.
>
> Can you test to see if the sync time drops at a lower speed?

Yes, it does.  The autobaud almost always starts off at 4800 and takes a 
few seconds to ramp up to 38400.

> > I should make one clarification that I forgot:  I removed many of
> > the drivers that I don't use when I compiled.  In my case I only
> > have Unknown, Generic NMEA, SiRF binary, and JSON slave compiled in.
>
> That shouldn't make a difference, but please test to see if it does.

I know it did make a bit of a difference.  The autobaud was much slower 
with every driver compiled in since it tested against each one. 
Dropping the unused ones sped up the process.  I didn't know about the 
fixed speed option or I would have used it because I keep the one 
receiver in 38400 SiRF binary exclusively.