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AF_XDP-interaction: Record NIC chip used

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As drivers supports multiple chips.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
This commit is contained in:
Jesper Dangaard Brouer
2021-11-24 17:10:20 +01:00
parent 457a7a5e1e
commit 9584e53e57
1 changed files with 20 additions and 20 deletions
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AF_XDP-interaction/README.org
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@@ -84,20 +84,20 @@ using the spin-mode, and effects of userspace running on same or a
different CPU core, and the CPU sleep state modes and RT-patched different CPU core, and the CPU sleep state modes and RT-patched
kernels. kernels.
| Driver | Test | core | time-delay avg | min | max | System | | Driver/HW | Test | core | time-delay avg | min | max | System |
|----------+--------+--------+----------------+----------+-------------+--------| |-----------+--------+--------+----------------+----------+-------------+--------|
| igc | spin | same | 1575 ns | 849 ns | 2123 ns | A | | igc/i225 | spin | same | 1575 ns | 849 ns | 2123 ns | A |
| igc | spin | remote | 2639 ns | 2337 ns | 4019 ns | A | | igc/i225 | spin | remote | 2639 ns | 2337 ns | 4019 ns | A |
| igc | wakeup | same | 22881 ns | 21190 ns | 30619 ns | A | | igc/i225 | wakeup | same | 22881 ns | 21190 ns | 30619 ns | A |
| igc | wakeup | remote | 50353 ns | 47420 ns | 56156 ns | A | | igc/i225 | wakeup | remote | 50353 ns | 47420 ns | 56156 ns | A |
|----------+--------+--------+----------------+----------+-------------+--------| |-----------+--------+--------+----------------+----------+-------------+--------|
| conf upd | | | | | no C-states | *B* | | conf upd | | | | | no C-states | *B* |
|----------+--------+--------+----------------+----------+-------------+--------| |-----------+--------+--------+----------------+----------+-------------+--------|
| igc | spin | same | 1402 ns | 805 ns | 2867 ns | B | | igc/i225 | spin | same | 1402 ns | 805 ns | 2867 ns | B |
| igc | spin | remote | 1056 ns | 419 ns | 2798 ns | B | | igc/i225 | spin | remote | 1056 ns | 419 ns | 2798 ns | B |
| igc | wakeup | same | 3177 ns | 2210 ns | 9136 ns | B | | igc/i225 | wakeup | same | 3177 ns | 2210 ns | 9136 ns | B |
| igc | wakeup | remote | 4095 ns | 3029 ns | 10595 ns | B | | igc/i225 | wakeup | remote | 4095 ns | 3029 ns | 10595 ns | B |
|----------+--------+--------+----------------+----------+-------------+--------| |-----------+--------+--------+----------------+----------+-------------+--------|
The latency is affected a lot by CPUs power-saving states, which can The latency is affected a lot by CPUs power-saving states, which can
be limited globally by changing =/dev/cpu_dma_latency=. (See section be limited globally by changing =/dev/cpu_dma_latency=. (See section
@@ -109,8 +109,8 @@ latency-performance= thus other tunings might also have happened)
System *RT1* have a Real-Time patched kernel, and =cpu_dma_latency= System *RT1* have a Real-Time patched kernel, and =cpu_dma_latency=
have no effect (likely due to kernel config). have no effect (likely due to kernel config).
| Driver | Test | core | time-delay avg | min | max | System | | Driver/HW | Test | core | time-delay avg | min | max | System |
|----------+--------+--------+----------------+---------+---------+--------| |-----------+--------+--------+----------------+---------+---------+--------|
| igb/i210 | spin | same | 2577 ns | 2129 ns | 4155 ns | RT1 | | igb/i210 | spin | same | 2577 ns | 2129 ns | 4155 ns | RT1 |
| igb/i210 | spin | remote | 788 ns | 551 ns | 1473 ns | RT1 | | igb/i210 | spin | remote | 788 ns | 551 ns | 1473 ns | RT1 |
| igb/i210 | wakeup | same | 6209 ns | 5644 ns | 8178 ns | RT1 | | igb/i210 | wakeup | same | 6209 ns | 5644 ns | 8178 ns | RT1 |