netdev - Re: [PATCH v2 net-next] mlx4: optimize xmit path

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Message-ID: <20141002102950.2b209373@redhat.com>
Date:	Thu, 2 Oct 2014 10:29:50 +0200
From:	Jesper Dangaard Brouer <brouer@...hat.com>
To:	Amir Vadai <amirv@...lanox.com>
Cc:	brouer@...hat.com, Eric Dumazet <eric.dumazet@...il.com>,
	Or Gerlitz <gerlitz.or@...il.com>,
	Alexei Starovoitov <ast@...mgrid.com>,
	"David S. Miller" <davem@...emloft.net>,
	"Eric Dumazet" <edumazet@...gle.com>,
	John Fastabend <john.r.fastabend@...el.com>,
	Linux Netdev List <netdev@...r.kernel.org>,
	Or Gerlitz <or.gerlitz@...il.com>, <amira@...lanox.com>,
	<idos@...lanox.com>, "Yevgeny Petrilin" <yevgenyp@...lanox.com>,
	<eyalpe@...lanox.com>
Subject: Re: [PATCH v2 net-next] mlx4: optimize xmit path

On Thu, 2 Oct 2014 11:03:13 +0300
Amir Vadai <amirv@...lanox.com> wrote:

> I'm still working on it, but I can't reproduce the numbers that you
> show. On my development machine, I get ~5.5Mpps with burst=8 and ~2Mpps
> with burst=1.

For pktgen it sounds like you either missing:

1) flag QUEUE_MAP_CPU
 and/or
2) clone_skb $BIGNUMBER

My usage of pktgen:
 http://netoptimizer.blogspot.dk/2014/06/pktgen-for-network-overload-testing.html

-- 
Best regards,
  Jesper Dangaard Brouer
  MSc.CS, Sr. Network Kernel Developer at Red Hat
  Author of http://www.iptv-analyzer.org
  LinkedIn: http://www.linkedin.com/in/brouer
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