Re: [Linuxptp-users] Configuration for boundary clock with on two-port NIC

[Miroslav L. <mli...@re...>]

On Sun, Nov 19, 2023 at 10:07:50PM +0100, Andre Puschmann wrote:
> Hey,
> 
> I've been able to get my hands on a ConnectX-3 Pro card and have done some
> initial testing. The card indeed has a shared PHC for both ports so running
> ptp4l as BC or TC does indeed work without the jbod option.
> 
> However, sync performance (i.e. rms values) for the downstream OCs isn't
> great. And in fact, even the Mellanox as a OC isn't giving great results -
> rms values jump a lot (and I've tried various PI value combinations).
> 
> Is anyone else seeing this with Mlx cards as well? Could it be my model or
> the firmware?

Try the L2 transport. IIRC at least some Mellanox NICs performed
worse with UDP transport for some reason.

-- 
Miroslav Lichvar