netdev - Re: [PATCH net-next] tcp: introduce tcp_try

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Message-ID: <1335234569.5205.100.camel@edumazet-glaptop>
Date:	Tue, 24 Apr 2012 04:29:29 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Neal Cardwell <ncardwell@...gle.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Tom Herbert <therbert@...gle.com>,
	Maciej Żenczykowski <maze@...gle.com>,
	Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
Subject: Re: [PATCH net-next] tcp: introduce tcp_try_coalesce

On Tue, 2012-04-24 at 04:13 +0200, Eric Dumazet wrote:

> This never happens on connections where performance matters : skb head
> can only contains one full mss segment.

By the way, top end hardware uses fragged skbs.

Incidentally this gives better splice() performance (avoids copy of skb
head to pages)



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