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Date:      Sat, 13 May 2000 13:43:13 -0700
From:      Peter Wemm <peter@netplex.com.au>
To:        Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc:        "Andrey A. Chernov" <ache@FreeBSD.org>, Brian Somers <brian@Awfulhak.org>, Igor Timkin <ivt@logger.gamma.ru>, current@FreeBSD.org, Jonathan Lemon <jlemon@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, brian@hak.lan.awfulhak.org
Subject:   Re: cvs commit: src/sys/netinet tcp.h tcp_input.c tcp_output.c tcp_timer.c tcp_var.h 
Message-ID:  <20000513204313.0D7691CD7@overcee.netplex.com.au>
In-Reply-To: Message from Poul-Henning Kamp <phk@critter.freebsd.dk>  of "Sat, 13 May 2000 16:53:46 %2B0200." <27282.958229626@critter.freebsd.dk> 

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Poul-Henning Kamp wrote:
> In message <20000513074604.A27829@freebsd.org>, "Andrey A. Chernov" writes:
> >On Sat, May 13, 2000 at 01:39:11PM +0100, Brian Somers wrote:
> >> This has been happening to me in environments with high packet loss, 
> >> and before the NewReno changes went in.  It was only happening in a 
> >> rather dubious environment were there was high packet loss 
> >> (compressed PPP over uncompressed PPP over a saturated ISDN dialup 
> >> that drops up to one in every three packets).
> >
> >But this bug is gone (for me at least), when NewReno is turned off.
> >Is it means that NewReno cause very high packet loss somehow?
> 
> I can reproduce the problem when I cvsup over a lossy line, goes
> away when newreno is disabled.

Yes, I had Jayanth turn newreno off by default.  Jonathan Lemon committed
it before Jayanth was ready.  We have fixed it locally and are running a
torture test on it.

The problem was that retransmits were sending the wrong data(!).

Cheers,
-Peter




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