diff options
| author | Tariq Toukan | 2017-02-15 17:05:39 +0200 |
|---|---|---|
| committer | Saeed Mahameed | 2017-04-30 16:03:17 +0300 |
| commit | ad78af9b88f3d12134d6406468e7798e65c385c0 (patch) | |
| tree | 770ea9521b351d2277cea39662492d64d0be7156 /arch/powerpc | |
| parent | 1f5b1e47ee08f6c623db599b6c23ce7c20b79458 (diff) | |
net/mlx5e: Use prefetchw when a write is to follow
"prefetchw()" prefetches the cacheline for write. Use it for
skb->data, as soon we'll be copying the packet header there.
Performance:
Single-stream packet-rate tested with pktgen.
Packets are dropped in tc level to zoom into driver data-path.
Larger gain is expected for smaller packets, as less time
is spent on handling SKB fragments, making the path shorter
and the improvement more significant.
---------------------------------------------
packet size | before | after | gain |
64B | 4,113,306 | 4,778,720 | 16% |
1024B | 3,633,819 | 3,950,593 | 8.7% |
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Cc: kernel-team@fb.com
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'arch/powerpc')
0 files changed, 0 insertions, 0 deletions