LinuxQuestions.org - 802.3ad Performance

I'm working on setting up 802.3ad bonding on our corporate file server. I've configured EtherChannel on our cisco switches and got the bonded interface up just fine. Everything is functioning normally, and perhaps thats the problem. Network performance is just the same as it was before. I'm bonding the two onboard Broadcom gigabit NICs on the server, but the bandwidth is the same as when we were running a single NIC.

The hardware is more than enough to handle more bandwidth (2x Xeon cores @2.33GHz driving a RAID5 array). I had expected to see a measurable jump in bandwidth, though not a full doubling. So I guess my question is have I done something wrong or were my expectations wrong?

Code:

$ cat /etc/modprobe.d/bonding.conf 

alias bond0 bonding

options bonding miimon=100 mode=4 lacp_rate=1

Code:

$ cat /proc/net/bonding/bond0 

Ethernet Channel Bonding Driver: v3.2.5 (March 21, 2008)



Bonding Mode: IEEE 802.3ad Dynamic link aggregation

Transmit Hash Policy: layer2 (0)

MII Status: up

MII Polling Interval (ms): 100

Up Delay (ms): 0

Down Delay (ms): 0



802.3ad info

LACP rate: fast

Active Aggregator Info:

        Aggregator ID: 2

        Number of ports: 2

        Actor Key: 17

        Partner Key: 2

        Partner Mac Address: 00:0f:8f:df:fd:00



Slave Interface: eth0

MII Status: up

Link Failure Count: 0

Permanent HW addr: 00:1c:23:ba:ac:64

Aggregator ID: 2



Slave Interface: eth1

MII Status: up

Link Failure Count: 0

Permanent HW addr: 00:1c:23:ba:ac:66

Aggregator ID: 2