Date: Wed, 22 Dec 1999 15:40:02 -0800 (PST) From: Jonathan Lemon <jlemon@americantv.com> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/1689: TCP extensions throttles distant connections Message-ID: <199912222340.PAA54590@freefall.freebsd.org>
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The following reply was made to PR kern/1689; it has been noted by GNATS.
From: Jonathan Lemon <jlemon@americantv.com>
To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
Cc: Sheldon Hearn <sheldonh@uunet.co.za>,
freebsd-gnats-submit@freebsd.org
Subject: Re: kern/1689: TCP extensions throttles distant connections
Date: Wed, 22 Dec 1999 17:30:59 -0600
I haven't been able to reproduce this here. Between two -current boxes:
net.inet.tcp.rfc1323 = 1 on both machines,
net.inet.tcp.delayed_ack = 1 on both machines,
On one machine:
ipfw pipe 1 config bw 128kbit/s delay 200ms
ipfw add pipe 1 ip from hostA to hostB out
ipfw add pipe 1 ip from hostB to hostA in
This gives:
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 400 3 0 1500 1012
E.g.: a 400ms round trip time.
I don't see any abnormal delays in connections between the two
machines. Is there something else I'm missing here, or is the
problem gone in -current?
--
Jonathan
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