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Date:      Wed, 9 Jul 2003 17:09:58 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Kenneth Culver <culverk@yumyumyum.org>
Cc:        current@freebsd.org
Subject:   Re: wierd dsl performance with -CURRENT
Message-ID:  <20030709220958.GO39506@dan.emsphone.com>
In-Reply-To: <20030709173114.W5579@alpha.yumyumyum.org>
References:  <Pine.BSF.4.21.0307091353440.22588-100000@InterJet.elischer.org> <20030709173114.W5579@alpha.yumyumyum.org>

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In the last episode (Jul 09), Kenneth Culver said:
> > look of any large values in the timestamps and see if there is
> > anything before that indicates a lost packet or a re-ordered one or
> > something (or a retransmitted ack)
> >
> > The key is to find the gap in the arriving packets and figure out
> > what caused it..
> >
> Alright, I'll have to do this later this evening, don't have time
> right now. Thanks for the help though.

Tcptrace is great for this; the tsg output graph will mark out-of-order
packets and duplicate acks for you.

-- 
	Dan Nelson
	dnelson@allantgroup.com



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