netdev - RE: Low performance Intel 10GE NIC (3.2.10) on 2.6.38 Kernel

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Message-ID: <1302762810.3549.233.camel@edumazet-laptop>
Date:	Thu, 14 Apr 2011 08:33:30 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Wei Gu <wei.gu@...csson.com>
Cc:	Alexander Duyck <alexander.h.duyck@...el.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	netdev <netdev@...r.kernel.org>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>
Subject: RE: Low performance Intel 10GE NIC (3.2.10) on 2.6.38 Kernel

Le jeudi 14 avril 2011 à 08:07 +0200, Eric Dumazet a écrit :
> Le jeudi 14 avril 2011 à 13:42 +0800, Wei Gu a écrit :
> > Hi guys,
> > Do you think it was a bug in the kernel from 2.6.35.2 with Intel 10GE ixgbe driver?
> > If so shall I issue a Bug on the bugzilla, and which category? Cause I'm not sure it was driver problem Or sched problem.
> 
> This makes no sense to me.
> 
> What is the maximum throughput you can get in pps before having packet
> drops ?
> 
> Please try with a single flow (to hit one queue, one cpu)
> 
> Thanks
>  

Also, please try to check if using smaller or bigger packets makes any
change in this max throughput


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