netdev - Re: [rfc/rft][patch] should use scheduler sync hint in tcp

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Message-Id: <1267529982.9365.7.camel@marge.simson.net>
Date:	Tue, 02 Mar 2010 12:39:42 +0100
From:	Mike Galbraith <efault@....de>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	netdev <netdev@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [rfc/rft][patch] should use scheduler sync hint in
 tcp_prequeue()?

On Tue, 2010-03-02 at 12:27 +0100, Eric Dumazet wrote:

> This wake_up_interruptible_sync_poll() change might be good for loopback
> communications (and pleases tbench), but is it desirable for regular
> multi flows NIC traffic ?

If you can take high frequency cache misses, likely yes.  For localhost,
that's pretty much guaranteed currently (ergo the question).

	-Mike

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