[CentOS] Bonding performance question
Les Mikesell
lesmikesell at gmail.com
Tue Jan 11 16:16:01 UTC 2011
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
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