Re: [chrony-users] Chronyd not adjusting the board's time when trying to adjust with PC(running ntp) time

[Bill Unruh <unruh@xxxxxxxxxxxxxx>]

And what I find far more distrubing is that the clock steps backwards.

2013-03-15 14:28:39 192.168.3.5     N  9 1111 111 1111  4  4 0.00 -1.150e-02
3.236e-03  7.536e-06  0.000e+00  1.181e-02
2013-03-15 14:28:44 192.168.3.5     N  9 1111 111 1111  4  4 0.00 -3.447e+00
2.557e-03  6.168e-06  0.000e+00  1.184e-02
2013-03-15 14:28:43 192.168.3.5     N  9 1111 111 1111  4  4 0.00  4.600e-05
2.569e-03  6.192e-06  0.000e+00  1.187e-02
2013-03-15 14:28:45 192.168.3.5     N  9 1111 111 1111  4  4 0.00  4.700e-05
2.623e-03  6.306e-06  0.000e+00  1.190e-02
2013-03-15 14:28:47 192.168.3.5

Note the packets sent out at 14:28:44 and two seconds later at :43. 
This indicates wither that you have severe hardware problems, or something
else is altering the clock behind the scenes.


On Sat, 16 Mar 2013, Vasanth Ragavendran wrote:

> Hi,
> I am using the latest version chronyd-1.27 for syncing my embedded board
> (running linux 2.6.27.27) with my pc running ntp server. The board is
> connected to the PC via a wireless ap with the board containing the
> wireless client. my wish to synchronise the board with the pc when ever the
> client is connected to the ap. the setup is
>
> board running chronyd-1.27 --(eth link)-> client ---(wirless)--> ap -(eth
> link)--> pc running ntp server
>
> With the configuration attached im some times able to sync the board with
> the pc but sometimes there is no syncing occuring. I even captured the
> packets transfer in wireshark running in the pc im able to see transfer of
> packets between client and the server with original timestamp and receive
> timestamp to that of the PC's time. however checking the date in the board
> doesn't show any change in the time, it remains at wat it was before.
> however sometimes it correctly adjusts to the PC's time. why does this
> occur?! in order to perform the sync i connect and disconnect the ap/client
> link which mimics the offline setting in chronyd. Attached pls find the
> chrony.conf and chronyd_connected is called whenever the client is
> connected to the ap.  am i missing something very basic?! i tried to look

What does "client is connected to the ap." mean? What ap?

> at the configs they all seem to be okay to me. or is it not?! also
> attaching the log files which has cases where the sync was successful. plz
> help! many thanks in advance.
>
> Thanks and Regards,
> R.Vasanth Ragavendran

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William G. Unruh   |  Canadian Institute for|     Tel: +1(604)822-3273
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UBC, Vancouver,BC  |   Program in Cosmology |     unruh@xxxxxxxxxxxxxx
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