netdev - Re: [RFC] tcp: use order-3 pages in tcp

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Date:	Wed, 19 Sep 2012 10:28:40 -0700
From:	Rick Jones <rick.jones2@...com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [RFC] tcp: use order-3 pages in tcp_sendmsg()

On 09/19/2012 08:14 AM, Eric Dumazet wrote:
> I did some tests and got no problem so far, even using splice() [ this
> one was tricky because it only deals with order-0 pages at this moment ]
>
> NIC tested : ixgbe, igb, bnx2x, tg3, mellanox mlx4
>
> On loopback, performance of netperf goes from 31900 Mb/s to 38500 Mb/s,
> thats a 20 % increase.

I guess Brutus will need a new baseline for his TCP Friends patch then :)

BTW, what is the change, if any for TCP_RR?

happy benchmarking,

rick jones

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