Performance of bonding driver

Performance of bonding driver

["J.A. Magallón"]

Hi...

I have tw boxes which I linked together vi 2x gigabit interfaces and a
3Com switch. Each interface is:

02:0a.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet Controller
02:0b.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet Controller

The switch is private for them, so there is no more taffic.
One interface alone works pretty well:

[  3] local 192.168.1.208 port 37739 connected with 192.168.1.226 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec  1.00 GBytes    861 Mbits/sec

I loaded bondin driver with no parameters, and using iperf to test the connection
I get:

[  5] local 192.168.1.208 port 5001 connected with 192.168.1.226 port 40036
[ ID] Interval       Transfer     Bandwidth
[  5]  0.0-10.0 sec    812 MBytes    679 Mbits/sec

In the node which receives, two instances of iftop on slave interfaces
show that load is balanced, but none flies higher than about 300 Mb/s.

Any ideas ?
Is bonding dependent on CPU power ? Boxes are P4-HT@2.8, 3Gb of RAM.

TIA

--
J.A. Magallon <jamagallon()ono!com>     \               Software is like sex:
                                         \         It's better when it's free

Re: Performance of bonding driver

[David Miller]

From: ""J.A. Magallón"" <jamagallon@ono.com>
Date: Fri, 20 Nov 2009 16:51:47 +0100

> I have tw boxes which I linked together vi 2x gigabit interfaces and a
> 3Com switch. Each interface is:

Just FYI, you might get better help on netdev@vger.kernel.org

Thanks.