[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [gpsd-dev] PPS over USB
From: |
Gary E. Miller |
Subject: |
Re: [gpsd-dev] PPS over USB |
Date: |
Mon, 7 May 2012 11:00:55 -0700 |
Yo Ed!
On Mon, 07 May 2012 16:08:15 +0100
Ed W <address@hidden> wrote:
> > Maybe. Gary is actually measuring 0.5 ms jitter.
>
> I guess I need to go find those results - however, might Gary mind
> resending his results and how to compute them here? For reference I
> have been feeding my results to chrony and examining the statistics
> from that. Probably ntp computes it's statistics differently?
I'm feeding the results of the GR-601W into ntpd on one host and into
chronyd on another. Both hosts also lock to PPS over serial on adjacent
GigE connected hosts so the local clock is stable. Eyeballing the worst
case GR-601W jitter over 10 or 20 mins on both give me about 0.500
milliSec. So nothing fancy on my end.
This exceeds the request of the bufferbloat project.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
address@hidden Tel:+1(541)382-8588
signature.asc
Description: PGP signature
- Re: [gpsd-dev] PPS over USB, (continued)
- Re: [gpsd-dev] PPS over USB, Hal Murray, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Hal Murray, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Jim Thompson, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB,
Gary E. Miller <=
- Re: [gpsd-dev] PPS over USB, Jim Thompson, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Hal Murray, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, tz, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Eric S. Raymond, 2012/05/06
- Re: [gpsd-dev] PPS over USB, dave taht, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/06
- Re: [gpsd-dev] PPS over USB, Ed W, 2012/05/07
- Re: [gpsd-dev] PPS over USB, Gary E. Miller, 2012/05/07