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Message-Id: <20141001.220839.1118640596408366269.davem@davemloft.net>
Date: Wed, 01 Oct 2014 22:08:39 -0400 (EDT)
From: David Miller <davem@...emloft.net>
To: ast@...mgrid.com
Cc: edumazet@...gle.com, brouer@...hat.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next] net: pktgen: packet bursting via
skb->xmit_more
From: Alexei Starovoitov <ast@...mgrid.com>
Date: Tue, 30 Sep 2014 17:53:21 -0700
> This patch demonstrates the effect of delaying update of HW tailptr.
> (based on earlier patch by Jesper)
>
> burst=1 is the default. It sends one packet with xmit_more=false
> burst=2 sends one packet with xmit_more=true and
> 2nd copy of the same packet with xmit_more=false
> burst=3 sends two copies of the same packet with xmit_more=true and
> 3rd copy with xmit_more=false
>
> Performance with ixgbe (usec 30):
> burst=1 tx:9.2 Mpps
> burst=2 tx:13.5 Mpps
> burst=3 tx:14.5 Mpps full 10G line rate
>
> Signed-off-by: Alexei Starovoitov <ast@...mgrid.com>
Applied, great work.
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