slowdowns with MTU > 8k

[Jeremy Allison]

Greg Dickie wrote:
> 
> Hi,
> 
>   We are playing with gigabit ethernet and we get quite good performance
> when the MTU is set around 8k. If we set it at 9014 (max MTU on the switch
> we use) the throughput from samba gets cut in half. Tried playing with
> "max xmit" but no effect.
> 
>   Anyone have any ideas what the problem could be or have any tools to
> dump the profile shared memory?

Capture traces so we can see what's going on ?

Jeremy.

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