[CentOS] Bonding performance question

Tue Jan 11 16:16:01 UTC 2011
Les Mikesell <lesmikesell at gmail.com>

On 1/11/2011 10:05 AM, lhecking at users.sourceforge.net wrote:
>> I guess you need to look at the bonding src code - looks like it is in
>> drivers/net/bonding/bond_main.c - for CentOS 5 it is:
>   C xor is bitwise.
>   I did a bit of scripting and found that the algorithm seems much more
>   sensitive to port numbers than IP addresses. Not that iperf gives much
>   control over those, it looks like the client port numbers are picked at
>   random. As a result, I would expect to repeat this test on the same set
>   of clients, say, hundreds of times, and maybe find a small number of
>   cases where all interfaces are utilised.

Hashing 4 values to 4 targets seems like collisions would be likely no 
matter how you do it.  The TX packet/byte values from ifconfig on the 
NICs should show how much went out each interface.

   Les Mikesell
    lesmikesell at gmail.com