Bad TCP performance with large MTU on 7-stable.

[Andrew Snow]

Arnaud Houdelette wrote:
> I also tried with tso disabled. Same results. Is it related to the re(4) 
> driver ? Or to the TCP stack ?

Having used em driver with 7-RELEASE and 7-STABLE, I can assure you that 
large MTU size (9100) works well and gives 100mb/s transfer rates easily.

So I can only conclude it is releated to the re driver.

- Andrew