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Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy
From: |
Gary E. Miller |
Subject: |
Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy |
Date: |
Mon, 4 Nov 2013 15:00:54 -0800 |
Yo Greg!
On Mon, 04 Nov 2013 16:14:27 -0500
Greg Troxel <address@hidden> wrote:
>
> Have people been seeing jitter low enough that microsecond
> quantization looks like a real issue?
Yes. I now see +/- 400 nSec jitter on chrony socket. I could do better
on a dedicated time server. Best I can do with SHM is currently about
+/- 2 uSec.
> What kind of clock stability
> and sync hardware does it take to get to that point?
I have a SiRF III, and KPPS on an eight core Xeon server ruinning irqbalance.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
address@hidden Tel:+1(541)382-8588
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- [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Eric S. Raymond, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Eric S. Raymond, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Andy Walls, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Greg Troxel, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Andy Walls, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Greg Troxel, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy,
Gary E. Miller <=
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Greg Troxel, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Miroslav Lichvar, 2013/11/05
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/05
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Harlan Stenn, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Eric S. Raymond, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Harlan Stenn, 2013/11/04
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Gary E. Miller, 2013/11/05
- Re: [gpsd-dev] Mysteriously vanishing bugs don't make me happy, Harlan Stenn, 2013/11/04