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To: Bjorn Wesen <bjorn.wesen@axis.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: What is TCPRenoRecoveryFail ?
In-Reply-To: <Pine.LNX.3.96.1020227144128.18713E-100000@fafner.axis.se.suse.lists.linux.kernel>
From: Andi Kleen <ak@suse.de>
Date: 27 Feb 2002 15:46:07 +0100
In-Reply-To: Bjorn Wesen's message of "27 Feb 2002 14:49:43 +0100"
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Bjorn Wesen <bjorn.wesen@axis.com> writes:

> Around the time of the packet loss happened, the counter
> TCPRenoRecoveryFail increased by one, but I'm not sufficiently into the
> TCP code to figure out why that happens and if that is the reason why
> Linux stop retransmitting anything.. any ideas ?


TCPRenoRecovery fail just means that fast retransmit didn't help and
it is going into a full retransmit. Fast retransmit is a short cut retransmit
mechanism that works faster when only a few packets got lost. You lost 
more than 1. You have to find out why you are losing them.

-Andi
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