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Date:      06 Apr 2001 01:14:14 EST
From:      "Mark Sergeant" <msergeant@snsonline.net>
To:        Richard Lucas <rlucas@solidcomputing.com>, Aaron Hill <hillaa@hotmail.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: FreeBSD limiting bandwith?
Message-ID:  <200104060614.f366EGp90742@xyzzy.intranet.snsonline.net>
In-Reply-To: <Pine.BSF.4.21.0104060103340.50389-100000@mail.solidcomputing.com>
References:  <Pine.BSF.4.21.0104060103340.50389-100000@mail.solidcomputing.com>

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No it is the Realtek card, some of the cards have xtreme issues under FreeBSD,
I know this as I have one on my laptop, works great at 100baseTX but at
10baseT/UTP I am lucky to get 80k/sec before this I was getting 1-2k/sec in
between machines. My advice for desktop owners stay away from rl8139's & for
laptop buyers make sure you read your specs. Thank god I am buying a switch
this weekend for home.

Cheers,

Mark

On Fri, 6 Apr 2001 01:10:18 -0500 (EST), Richard Lucas said:

> Ok so I tried this out. From ifconfig rl0 I got the following media info:
>  
>          media: autoselect (none) status: active
>          supported media: autoselect 100baseTX <full-duplex> 100baseTX
>  10baseT/UTP <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
>  
>  
>  Since it's on a 10mb hub I tried to change it to 10baseT/UTP which didn't
>  help anything. I then tried the 10baseT/UTP in full duplex and it helped a
>  bit. I am now able to get up to about 60kb/sec. So at least it got a bit
>  better. Any other suggestions?
>  
>  Another thing that may be related is that before it was going extremely
>  slow even on the LAN. I was getting dial-up speeds transferring stuff
>  between internal machines. Now since I changed that it is getting full
>  speed between one of the BSD machines and the win2k machine. The other BSD
>  machine is still getting slow transfer speeds internally though which
>  seems a bit odd to me. Possibly the hub that's causing the problem? It is
>  a bit old.
>  
>  -Richard
>  
>  On Fri, 6 Apr 2001, Aaron Hill wrote:
>  
>  > >seem to be limiting upload speed or something. When testing with a 5.3 mb
>  > >file from websites hosted on each I was getting 80 kb/sec from the win2k
>  > >machine which is about right for the line but would only get a max of
>  > >50 kb/sec from the BSD machines.
>  > >
>  > >All 3 machines are using the same type of nic, Realtek 10/100 pci
>  > >cards. Is there some type of hidden setting I'm missing that is limiting
>  > >the bandwith? Or is it perhaps a driver issue with the card? Any
>  > >suggestions or ideas are appreciated.
>  > 
>  > 
>  > Have you looked at the duplex & speed settings of the Realtek cards under 
>  > FreeBSD?
>  > 
>  > To do that firstly check out what the settings are by issuing this command:
>  > 
>  > ifconfig rl0
>  > 
>  > (that's assuming the Realtek card device is rl0)
>  > 
>  > Then you can look at how the card is currently configured, have a look at 
>  > what modes are supported and change those modes.
>  > 
>  > To change the media modes of the network card:
>  > 
>  > ifconfig rl0 media 10baseT/UTP
>  > or
>  > ifconfig rl0 media 100baseTX
>  > 
>  > 
>  > To change the duplex modes of the network card:
>  > 
>  > ifconfig rl0 media 100baseTX mediaopt half-duplex
>  > or
>  > ifconfig rl0 media 100baseTX mediaopt full-duplex
>  > 
>  > 
>  > I'm pretty sure you can only do half-duplex in 10Mb/s mode with this card so 
>  > only worry about duplex in 100Mb/s mode.
>  > 
>  > Of course if you find something that works you can put the appropriate media 
>  > and mediaopt commands in the ifconfig_rl0 line in /etc/rc.conf to keep the 
>  > settings across reboots.
>  > 
>  > Let us know how you go.
>  > 
>  > Regards
>  > Aaron Hill
>  > 
>  > 
>  > 
>  > 
>  > 
>  > _________________________________________________________________________
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>  > 
>  
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-- 
Heuristics are bug ridden by definition.  If they didn't have bugs,
then they'd be algorithms.



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