Re: [PATCH net-next V3 3/3] net/mlx5: Implement PTM cross timestamping support

[Wojciech Drewek]

On 30.07.2024 15:40, Tariq Toukan wrote:
> From: Rahul Rameshbabu <rrameshbabu@xxxxxxxxxx>
> 
> Expose Precision Time Measurement support through related PTP ioctl.
> 
> The performance of PTM on ConnectX-7 was evaluated using both real-time
> (RTC) and free-running (FRC) clocks under traffic and no traffic
> conditions. Tests with phc2sys measured the maximum offset values at a 50Hz
> rate, with and without PTM. 
> 
> Results:
> 
> 1. No traffic
> +-----+--------+--------+
> |     | No-PTM | PTM    |
> +-----+--------+--------+
> | FRC | 125 ns | <29 ns |
> +-----+--------+--------+
> | RTC | 248 ns | <34 ns |
> +-----+--------+--------+
> 
> 2. With traffic
> +-----+--------+--------+
> |     | No-PTM | PTM    |
> +-----+--------+--------+
> | FRC | 254 ns | <40 ns |
> +-----+--------+--------+
> | RTC | 255 ns | <45 ns |
> +-----+--------+--------+
> 
> Signed-off-by: Rahul Rameshbabu <rrameshbabu@xxxxxxxxxx>
> Co-developed-by: Carolina Jubran <cjubran@xxxxxxxxxx>
> Signed-off-by: Carolina Jubran <cjubran@xxxxxxxxxx>
> Signed-off-by: Tariq Toukan <tariqt@xxxxxxxxxx>
> ---

Reviewed-by: Wojciech Drewek <wojciech.drewek@xxxxxxxxx>

<...>