Re: Chrony on CM4

On Mon, Sep 4, 2023 at 3:46 PM Miroslav Lichvar <[email protected]> wrote:

>
> > It seems to be working properly: I get no errors and much better
> > results than with another local chrony server that is not using
> > hardware timestamping. But how do I tell if the hardware timestamping
> > is working properly in both directions?
>
> On the client, "chronyc ntpdata" should consistently show Hardware for
> both "TX timestamping" and "RX timestamping". On the server, "chronyc
> serverstats" should show increasing "NTP hardware RX timestamps" and
> "NTP hardware TX timestamps". The number of daemon and kernel
> timestamps should be incrementing only with new/restarted clients and
> clients not using interleaved mode.
>

"chronyc serverstats" looks good: I'm seeing  increasing "NTP hardware RX
timestamps" and
"NTP hardware TX timestamps".

I'm now trying two clients, and I see different results with chronyc
ntpdata:

- another CM4: here I see RX timestamping : Hardware but TX timestamping :
Kernel
- an x86 box with the AQC107: here I see TX timestamping : Hardware and RX
timestamping : Hardware
but on the client "chronyc ntpdata" shows Kernel for TX timestamping and RX
timestamping.

I'm not quite sure what's going on.

James