This is my driver information.
ethtool -i ethXX driver: ixgbe version: 3.9.15-NAPI firmware-version: 0x800000a5 bus-info: 0000:04:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes
Now I have an average traffic of 1/1.5 Gbps (75k packets per second) hitting this interface and I can see one/or more of the ksoftirqd threads going to 100%.
I tried enabling the rx-usecs/rx-frames option, but no improvement. A bit of latency is not an issue for me. I just want the ksoftirqd usage to go down.
I see the limit of rx-usecs is 1022, which is the usecs after which the next interrupt should be fired (thats my understanding, please correct me if I am wrong). Though it doesn't solve my problem.
rx-frames on other hand are not supported on this driver. Neither is there any support for "adaptive-rx".
What should be the next step I should be looking at? Any help is greatly appreciated.