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Date: Wed, 20 Dec 2000 19:10:32 +0100
From: Jesper Skriver <jesper@skriver.dk>
To: Matthew Thyer <thyerm@camtech.net.au>
Cc: Michael Class <michael_class@hp.com>, current@freebsd.org
Subject: Re: Network performance-problem
Message-ID: <20001220191031.C64470@skriver.dk>
References: <3A3DDDC7.6F2540B7@hp.com> <3A3EEADE.3924E4E6@camtech.net.au>
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In-Reply-To: <3A3EEADE.3924E4E6@camtech.net.au>; from thyerm@camtech.net.au on Tue, Dec 19, 2000 at 03:28:06PM +1030
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On Tue, Dec 19, 2000 at 03:28:06PM +1030, Matthew Thyer wrote:
> Michael Class wrote:
> > 
> > Hello,
> > 
> > i am seeing a problem with 5.0-current (from 14.12.00) and a 3COM
> > 3CCFE575CT Lancard (pc-cardbus) using the xl-driver.
> 
> [snip]
> 
> > Why behaves my FreeBSD-machines worse then the other boxes? Any Ideas?
> 
> Make sure you are running with the TCP/IP NewReno optimisation turned
> off.  There are bugs in the TCP/IP NewReno code that result in bad
> packets and hence lots of retransmission with generally reduced network
> performance.
> 
> I think its meant to be the default now in -CURRENT (to have NewReno off)
> but I'm not sure if PHK has disabled it yet.
> 
> $ cat /usr/local/etc/rc.d/nonewreno.sh 
> #!/bin/sh
> sysctl -w net.inet.tcp.newreno=0
> echo -n " no_newreno"

A

echo "net.inet.tcp.newreno=0" >> /etc/sysctl.conf

would be easier ;-)

/Jesper

-- 
Jesper Skriver, jesper(at)skriver(dot)dk  -  CCIE #5456
Work:    Network manager @ AS3292 (Tele Danmark DataNetworks)
Private: Geek            @ AS2109 (A much smaller network ;-)

One Unix to rule them all, One Resolver to find them,
One IP to bring them all and in the zone to bind them.


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