Date: Tue, 13 Jan 2009 15:27:59 -0800 (PST)
Message-Id: <20090113.152759.29875009.davem@davemloft.net>
To: dada1@cosmosbay.com
Cc: w@1wt.eu, ben@zeus.com, jarkao2@gmail.com, mingo@elte.hu,
       linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
       jens.axboe@oracle.com
Subject: Re: [PATCH] tcp: splice as many packets as possible at once
From: David Miller <davem@davemloft.net>
In-Reply-To: <4966FC89.8040006@cosmosbay.com>
References: <4966F2F4.9080901@cosmosbay.com>
	<20090109070415.GA27758@1wt.eu>
	<4966FC89.8040006@cosmosbay.com>
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 624
Lines: 15

From: Eric Dumazet <dada1@cosmosbay.com>
Date: Fri, 09 Jan 2009 08:28:09 +0100

> If the application uses setsockopt(sock, SOL_SOCKET, SO_RCVLOWAT,
> [32768], 4), it would be good if kernel was smart enough and could
> reduce number of wakeups.

Right, and as I pointed out in previous replies the problem is
that splice() receive in TCP doesn't check the low water mark
at all.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/