From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: RE: Low performance Intel 10GE NIC (3.2.10) on 2.6.38 Kernel
Date: Thu, 07 Apr 2011 11:06:08 +0200
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Cc: netdev <netdev@vger.kernel.org>,
	Alexander Duyck <alexander.h.duyck@intel.com>,
	Jeff Kirsher <jeffrey.t.kirsher@intel.com>
To: Wei Gu <wei.gu@ericsson.com>
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Le jeudi 07 avril 2011 =C3=A0 16:39 +0800, Wei Gu a =C3=A9crit :
> I'm only insert a prerouting hook to make a copy of the incomming
> packet and swap the L2/L3 header, send it back on the same interface.
>=20

Small packets or big ones ?

You dont need to copy the packet, its expensive.


> BTW, some times I notices that the perf tool was not mapping the
> symbol correclly, I don't why?
>=20

You might try to put ixgbe in static kernel, not in a module.

> I will try a fresh install of kernel 2.6.30 and do the test with the
> shipped ixgbe driver again.
>=20

OK thanks.