netdev - How fast can your 10G go?

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Message-ID: <4A12D8D4.2070303@candelatech.com>
Date:	Tue, 19 May 2009 09:05:40 -0700
From:	Ben Greear <greearb@...delatech.com>
To:	NetDev <netdev@...r.kernel.org>
Subject: How fast can your 10G go?

I've been running some tests on a new Nehalem based system
with a 2 port pci-e x8 10G NIC (ixgbe driver).

When using pktgen, max I can get is about 5.6Gbps tx + rx on both ports.  This is
about 22Gbps across the backplane, so I don't mean to complain :)

However, I'm curious if anyone has gotten any better performance on
some other system?  In particular, it seems that my system is bound by
the bus and/or the NIC.  Would I need to find something like a x16 slot
to have a chance at 10Gbps bi-directional on 2 ports?

Thanks,
Ben

-- 
Ben Greear <greearb@...delatech.com>
Candela Technologies Inc  http://www.candelatech.com

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