I use dual port supermicro 82575 based card. With 2.6.26 kernel, I can
see only one tx interrupt on /proc/interrupts. Then, I tried latest
1.2.44.9 igb driver, and enabled CONFIG_IGB_SEPARATE_TX_HANDLER. Using
this driver, I can see 4 tx and 4 rx interrupts on /proc/interrupts.
I fire-up several iperf sessions then, and got this eth stats:
# ethtool -S eth3 | grep queue
tx_restart_queue: 0
tx_queue_0_packets: 2445604
tx_queue_0_bytes: 3701639032
tx_queue_1_packets: 0
tx_queue_1_bytes: 0
tx_queue_2_packets: 0
tx_queue_2_bytes: 0
tx_queue_3_packets: 0
tx_queue_3_bytes: 0
rx_queue_0_packets: 408263
rx_queue_0_bytes: 26952236
rx_queue_1_packets: 0
rx_queue_1_bytes: 0
rx_queue_2_packets: 408249
rx_queue_2_bytes: 26944442
rx_queue_3_packets: 408056
rx_queue_3_bytes: 26931704
I tried with 'tc add qdisc dev eth3 root rr bands 0 multiqueue', and
still only single tx queue get used.
Is it normal?
Thanks.
Regards,
P.Y. Adi Prasaja
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