[ gpsdrive ] Re: [Gpsd-dev] gpsd lag: msg#00095

Subject: [ gpsdrive ] Re: [Gpsd-dev] gpsd lag
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Remco Treffkorn wrote:
> On Wednesday 10 August 2005 15:28, Andreas Schneider wrote:
>
>>Hi,
>>
>>I hope someone of you could help me to find a bug in gpsd (svn head). I
>
>
> There is no bug in gpsd causing that. :-)
>

Aha

>
>>have a lag of 11 sec in gpsd. Not only the time differs also the speed
>>needs 10 sec to display the exact one and my position is always serveral
>>meters behind me.
>
>
> Yup, it's about 10 seconds.
>

You'll say that every SiRF II GPS mouse has a lag. You'll current position is
always serveral hundred meters away if you drive around.

I don't think so.

>
>>With gpsd, the difference is 11 sec
>
>
> I measured 10.
>
>
>>with "sirfmon /dev/ttyUSB0" it is 2 sec
>>
>
>
> And three.
>
>
>>It is a Altina GGM 308 HU, SiRF II, NMEA
>>Version: 2.3.2-GSW2-2.05.024-C1Prod1.1
>>
>
>
> The sirfmon time should be 13 seconds off (I believe). Leap seconds.
>
> Try forcing gpsd to not switch to sirf mode (configure
> --without-sirfmon-or-whatever). In nmea mode you should get correct values.

You mean

- --disable-sirfII

which doesn't work.

>
> If you do, then your receiver is as broken as mine.
>
> Cheers,
> Remco
>

- --
http://www.cynapses.org/ - cybernetic synapses

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