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From: Paul Brook <paul@codesourcery.com>
Subject: Re: [Qemu-devel] Transforming stdin and stdout pair into a socket
Date: Tue, 12 May 2009 00:07:23 +0100
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To: qemu-devel@nongnu.org
Cc: nbd-general@lists.sourceforge.net, "Ciprian Dorin,
	Craciun" <ciprian.craciun@gmail.com>, linux-newbie@vger.kernel.org

>     I've seen socat, and I could use it as you described. My only
> objection to this solution is that there is an unneeded process in the
> middle that just pipes data around...
>
>    (Instead of socat, I think it would be more efficient to just write
> a simple application that uses the "new" Linux syscall "splice" that
> I've just found by mistake yesterday...)

In that case you need to fix socat to use splice() when available. I have a 
hard time believing socat adds measurable overhead, especially if you're 
already tunnelling over ssh.

Paul