Ok, I have upgraded my distro to Debian Wheezy (3.2.0-4-amd64) and it works
like a charm!
It was due to, as you said, the buggy Huge Pages kernel support in 2.6.32.
Thanks!


2013/5/21 Thomas Monjalon <thomas.monjalon@6wind.com>

> Hello,
>
> 21/05/2013 17:19, Pichon Julien :
> > Same problem here with a x540-T2 adapter on a debian squeeze
> > (2.6.32-5-amd64).
>
> I think you should upgrade your kernel.
> Vanilla Linux versions < 2.6.34 are known to be buggy about huge pages.
> Huge pages support is important for DPDK and it could be the cause of your
> ixgbe problem.
> Note that I don't know if this Debian kernel has backported patches to fix
> hugepages support.
>
> --
> Thomas
>