I was troubleshooting some network performance issues and during my testing, came across some very interesting behavior that I cannot explain.
I wanted to see if anyone else had seen anything like this?
1. I setup one of the network interfaces directly from the filer to our core switch (1g, full, jumbo frames)
2. I tested copying large files 8gb using CIFS and was getting some 40mb/s performance (2 minutes to copy the file)
3. I then deleted this configuration and created a virtual network interface and added only one nic to the trunk. (same nic actually)
4. I tested the throughput copying the same 8gb file and got 20% faster network performance!
I repeated this test three times with the same file and got the exact same results.
Setting up as a VIF with one nic in the trunk was faster than direct nic connection.
This seems to fly directly in the face of logic.
Anyone got any ideas on this behavior?