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| author | yonatanc <[email protected]> | 2017-04-20 20:55:55 +0300 |
|---|---|---|
| committer | Doug Ledford <[email protected]> | 2017-04-21 10:45:02 -0400 |
| commit | cee2688e3cd60e0d1ab2f049e31cf11fa3f62540 (patch) | |
| tree | b92d3d4b7dee25cf7cec3f4f1a4cbe4389d1317c /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | 0d38ac8a8be1c8f65a63187b60ea92dbd938c332 (diff) | |
IB/rxe: Offload CRC calculation when possible
Use CPU ability to perform CRC calculations, by
replacing direct calls to crc32_le() with crypto_shash_updata().
The overall performance gain measured with ib_send_bw tool is 10% and it
was tested on "Intel CPU ES-2660 v2 @ 2.20Ghz" CPU.
ib_send_bw -d rxe0 -x 1 -n 9000 -e -s $((1024 * 1024 )) -l 100
---------------------------------------------------------------------------------------------
| | bytes | iterations | BW peak[MB/sec] | BW average[MB/sec] | MsgRate[Mpps] |
---------------------------------------------------------------------------------------------
| crc32_le | 1048576 | 9000 | inf | 497.60 | 0.000498 |
| CRC offload | 1048576 | 9000 | inf | 546.70 | 0.000547 |
---------------------------------------------------------------------------------------------
Fixes: 8700e3e7c485 ("Soft RoCE driver")
Signed-off-by: Yonatan Cohen <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions