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

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Message-Id: <20111204.132134.2286148075037261295.davem@davemloft.net>
Date:	Sun, 04 Dec 2011 13:21:34 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] tcp: tcp_sendmsg() page recycling

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Sun, 04 Dec 2011 18:05:17 +0100

> If our TCP_PAGE(sk) is not shared (page_count() == 1), we can set page
> offset to 0.
> 
> This permits better filling of the pages on small to medium tcp writes.
> 
> "tbench 16" results on my dev server (2x4x2 machine) :
> 
> Before : 3072 MB/s
> After  : 3146 MB/s  (2.4 % gain)
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>

Applied.
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