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

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Message-Id: <20120919.135655.381209248813843140.davem@davemloft.net>
Date:	Wed, 19 Sep 2012 13:56:55 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [RFC] tcp: use order-3 pages in tcp_sendmsg()

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 19 Sep 2012 17:14:19 +0200

> 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.

That's really a lot more than I expected, nice.
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