netdev - Re: [PATCH net-next] tcp: allow for bigger reordering level

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Message-Id: <20141030.161417.325550902152268177.davem@davemloft.net>
Date:	Thu, 30 Oct 2014 16:14:17 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	netdev@...r.kernel.org, wygivan@...gle.com
Subject: Re: [PATCH net-next] tcp: allow for bigger reordering level

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Wed, 29 Oct 2014 12:27:49 -0700

> Yuchung and othres are working on a new way to handle reorders (RACK),
> and should present the concept in next IETF meeting.
> 
> A linux patch should follow shortly.
> 
> High level idea is :
> 
> Decide when and what to retransmit based on the timing, instead of
> sequence, relationships. This covers both original or retransmitted
> packets.
> 
> On dupacks, wait a fraction of RTT before the repair process to both
> allow reordering and relieve the network

My instint says that this delay will increase recovery time, but I
guess they've taken that into consideration :-)
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