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Date: Tue, 07 Nov 2000 14:43:46 -0800
To: "David S. Miller" <davem@redhat.com>
From: Lincoln Dale <ltd@cisco.com>
Subject: Re: Poor TCP Performance 2.4.0-10 <-> Win98 SE PPP
Cc: jordy@napster.com, linux-kernel@vger.kernel.org, kuznet@ms2.inr.ac.ru
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>23:36:16.261533 64.124.41.179.8888 > 209.179.194.175.1084: P 1:21(20) ack 
>44 win 5840 (DF)
>23:36:16.261669 64.124.41.179.8888 > 209.179.194.175.1084: P 21:557(536) 
>ack 44 win 5840 (DF)
>23:36:19.261055 64.124.41.179.8888 > 209.179.194.175.1084: P 1:21(20) ack 
>44 win 5840 (DF)
>
>The equivalent packets from the win98 log:
>
>22:34:36.069773 64.124.41.179.8888 > 209.179.194.175.1084: P 1:19(18) ack 
>44 win 5840 (DF)
>22:34:36.069837 64.124.41.179.8888 > 209.179.194.175.1084: P 19:553(534) 
>ack 44 win 5840 (DF)
>22:34:39.049788 64.124.41.179.8888 > 209.179.194.175.1084: P 1:21(20) ack 
>44 win 5840 (DF)
>
>(ie. Linux sends bytes 1:21 both the first time, and when it
>  retransmits that data.  However win98 "sees" this as 1:19 the first
>  time and 1:21 during the retransmit by Linux)

this excerpt looks like when a modem is set to eat XON/XOFF ...

a ping which does a sweep of many byte values should show this up ...


cheers,

lincoln.

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