netdev - Re: under-performing bonded interfaces

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Message-ID: <1324532593.2621.26.camel@edumazet-laptop>
Date:	Thu, 22 Dec 2011 06:43:13 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Simon Chen <simonchennj@...il.com>
Cc:	Ben Hutchings <bhutchings@...arflare.com>,
	Ben Greear <greearb@...delatech.com>, netdev@...r.kernel.org
Subject: Re: under-performing bonded interfaces

Le mercredi 21 décembre 2011 à 20:26 -0500, Simon Chen a écrit :
> Hi folks,
> 
> I added an Intel X520 card to both the sender and receiver... Now I
> have two 10G ports on a PCIe 2.0 x8 slot (5Gx8), so the bandwidth of
> the PCI bus shouldn't be the bottleneck.
> 
> Now the throughput test gives me around 16Gbps in aggregate. Any ideas
> how I can push closer to 20G? I don't quite understand where the
> bottleneck is now.

Could you post some "perf top" or "perf record / report" numbers ?



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