- Reduce per packet cost by buffering the output packet buffer indexes in the queue and
process the queue outside the packet processing loop.
- Move unnecessary variable initialization outside of the while loop.
- There is no need to save the old interface if tracing is not enabled.
Test result for 256 bytes packet comparison. Other packet size shows similar improvement.
With the patch
--------------
BondEthernet0-output active 52836 13526016 0 1.71e1 256.00
BondEthernet0-tx active 52836 13526016 0 2.68e1 256.00
TenGigabitEthernet6/0/0-output active 52836 6762896 0 9.17e0 127.99
TenGigabitEthernet6/0/0-tx active 52836 6762896 0 6.97e1 127.99
TenGigabitEthernet6/0/1-output active 52836 6763120 0 9.40e0 128.00
TenGigabitEthernet6/0/1-tx active 52836 6763120 0 7.00e1 128.00
bond-input active 52836 13526016 0 1.76e1 256.00
Without the patch
-----------------
BondEthernet0-output active 60858 15579648 0 1.73e1 256.00
BondEthernet0-tx active 60858 15579648 0 2.94e1 256.00
TenGigabitEthernet6/0/0-output active 60858 7789626 0 9.29e0 127.99
TenGigabitEthernet6/0/0-tx active 60858 7789626 0 7.01e1 127.99
TenGigabitEthernet6/0/1-output active 60858 7790022 0 9.31e0 128.00
TenGigabitEthernet6/0/1-tx active 60858 7790022 0 7.10e1 128.00
bond-input active 60858 15579648 0 1.77e1 256.00
Change-Id: Ib6d73a63ceeaa2f1397ceaf4c5391c57fd865b04
Signed-off-by: Steven <sluong@cisco.com>
c4e99c5d6f