diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2021-08-06 01:55:32 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-06 11:08:57 +0100 |
| commit | 3bacbe04251b7bc5049a8951563d3a9a9b854dc1 (patch) | |
| tree | 3e7f481ec700f38faf250f1647d8f80fce33bd6e /net/dsa | |
| parent | 47bfc4d128dedd9e828e33b70b87b591a6d59edf (diff) | |
net: ethernet: ti: am65-cpsw: use napi_complete_done() in TX completion
This patch enables support for hard irqs deferral feature from Eric Dumazet
[1] for TI K3 CPSW driver by using napi_complete_done() in TX completion
path.
Depending on gro_flush_timeout and napi_defer_hard_irqs at gives up to 30%
CPU utilization reduction:
gro_flush_timeout=50000
napi_defer_hard_irqs=2
netperf -l 10 -H 192.168.1.1 -t UDP_STREAM -c -C -- -m 1470
MIGRATED UDP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.1.1 () port 0 AF_INET
Socket Message Elapsed Messages CPU Service
Size Size Time Okay Errors Throughput Util Demand
bytes bytes secs # # 10^6bits/sec % SS us/KB
before:
212992 1470 10.00 809632 0 952.0 42.98 14.792
212992 10.00 809630 952.0 50.66 8.719
after:
212992 1470 10.00 813686 0 956.8 32.14 11.009
212992 10.00 813686 956.8 50.05 8.570
[1] https://lore.kernel.org/netdev/20200422161329.56026-1-edumazet@google.com/
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
0 files changed, 0 insertions, 0 deletions