From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from snark.thyrsus.com (static-71-162-243-5.phlapa.fios.verizon.net [71.162.243.5]) by huchra.bufferbloat.net (Postfix) with ESMTP id 2CDD42020B8 for ; Tue, 1 May 2012 18:32:17 -0700 (PDT) Received: by snark.thyrsus.com (Postfix, from userid 1000) id 039774043E; Tue, 1 May 2012 21:32:15 -0400 (EDT) Date: Tue, 1 May 2012 21:32:15 -0400 From: "Eric S. Raymond" To: "Gary E. Miller" Message-ID: <20120502013215.GB11394@thyrsus.com> References: <20120320121724.GA11523@thyrsus.com> <20120320104542.0eaf179c.gem@rellim.com> <20120501151027.44487e16.gem@rellim.com> <20120501230917.GE10188@thyrsus.com> <20120501163302.575890f8.gem@rellim.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gBBFr7Ir9EOA20Yy" Content-Disposition: inline In-Reply-To: <20120501163302.575890f8.gem@rellim.com> Organization: Eric Conspiracy Secret Labs X-Eric-Conspiracy: There is no conspiracy User-Agent: Mutt/1.5.21 (2010-09-15) Cc: thumbgps-devel@lists.bufferbloat.net, gpsd-dev@nongnu.org Subject: Re: [Thumbgps-devel] Progress on Plain Jane X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list Reply-To: esr@thyrsus.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 02 May 2012 01:32:17 -0000 --gBBFr7Ir9EOA20Yy Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Gary E. Miller : > > That's excellent news. 0.5msec jitter is as good as we could have > > expected and exactly what one would predict from a max error of 1msec > > due to polling interval. The long-term NMEA/USB drift is consistent > > with previous observations by Hal Murray and myself. >=20 > Nice when theory and practice agree. I wonder if there is a USB 2.0 > equivalent of the PL2303 which would give us a 125 microSec poll? >=20 > Might be worth asking navisys about that. Maybe. But that would require that they qualify a new and probably more expensive adapter part. We should get this puppy shipping and let them see some ROI before we push that. --=20 Eric S. Raymond --gBBFr7Ir9EOA20Yy Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iD8DBQFPoI6frfUW04Qh8RwRAmILAKDZj4JmR2rkF0FoKxSoFyIYIrMUJQCgkiLo 7zIbwWLu+1fWZX7LMhL9D1U= =p+gz -----END PGP SIGNATURE----- --gBBFr7Ir9EOA20Yy--