netdev - Re: [PATCH net 1/2] tcp: generate CA_EVENT_TX

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Message-Id: <20150910.105856.1968231602083108972.davem@davemloft.net>
Date:	Thu, 10 Sep 2015 10:58:56 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, ycheng@...gle.com, ncardwell@...gle.com,
	jri@...gle.com, stephen@...workplumber.org, sangtae.ha@...il.com,
	lawrence@...kmo.org
Subject: Re: [PATCH net 1/2] tcp: generate CA_EVENT_TX_START on data frames

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 09 Sep 2015 21:54:37 -0700

> From: Neal Cardwell <ncardwell@...gle.com>
> 
> Issuing a CC TX_START event on control frames like pure ACK
> is a waste of time, as a CC should not care.
> 
> Following patch needs this change, as we want CUBIC to properly track
> idle time at a low cost, with a single TX_START being generated.
> 
> Yuchung might slightly refine the condition triggering TX_START
> on a followup patch.
> 
> Signed-off-by: Neal Cardwell <ncardwell@...gle.com>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Signed-off-by: Yuchung Cheng <ycheng@...gle.com>

Applied.
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