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Re: gpsd autobaud and cpu usage

From: Gary E. Miller
Subject: Re: gpsd autobaud and cpu usage
Date: Sat, 26 Sep 2020 08:54:22 -0700

Yo Paul!

On Sat, 26 Sep 2020 09:33:00 +0300
Paul Fertser <> wrote:

> Hey Gary!
> On Fri, Sep 25, 2020 at 05:40:29PM -0700, Gary E. Miller wrote:
> > 8 speeds, times 2 seconds per test, times 3 parity (E, N, O) times
> > 1 stop bits (0, 1, 2).  
> Is there any UART hardware that's really using anything but 1 stop bit
> _by default_?

They do exist, and support is required.

> Also, since you have plenty of experience with different receivers,
> can you tell what parity is more common, even or odd (my guess it's
> odd)?

8N1 is most common.  gpsd has to support them all.

The one thing you learn with gpsd is that more than a few people are
doing things you never imagined with it.

Talk is cheap, send patches and benchmarks.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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