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| author | Rahul Rameshbabu <rrameshbabu@nvidia.com> | 2024-07-30 16:40:54 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-08-05 16:44:44 -0700 |
| commit | d17125fb0923228fb3cc1e03790de4ee88f7f95f (patch) | |
| tree | e2b9b7af6bb75a604e6b5a9d4b6d7c5ee1ff6478 /tools/perf/scripts/python | |
| parent | bec6d85d43eb7fa0834b4284bdc62f7d3a23288f (diff) | |
net/mlx5: Implement PTM cross timestamping support
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@nvidia.com>
Co-developed-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20240730134055.1835261-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions