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Date:      Sun, 27 May 2001 10:35:36 -0400
From:      Jim Mock <jim@FreeBSD.org>
To:        mobile@FreeBSD.org
Subject:   weird network slowness with laptop
Message-ID:  <20010527103535.A22392@cartman.boston.geekhouse.net>

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Howdy,

I bought a Sony Vaio FX210 about two weeks ago, and have been having
some issues with it being *really* slow on my network.  It has a
built-in rl0 (yes, I know that chipset sucks), and I also have a D-Link
DFE-650 pccard.  I get the same results with both interfaces... extreme
slowness.

Here's an example:

Fetching mozilla from a desktop on my network...

# make fetch
>> mozilla-source-0.9.tar.bz2 doesn't seem to exist in /usr/ports/distfiles/.
>> Attempting to fetch from ftp://ftp.mozilla.org/pub/mozilla/releases/mozilla0.9/src/.
Receiving mozilla-source-0.9.tar.bz2 (25066194 bytes): 30%^C
7567624 bytes transferred in 49.6 seconds (149.13 kBps)

fetch: transfer interrupted
# 

Fetching mozilla from the laptop...

# make fetch
>> mozilla-source-0.9.tar.bz2 doesn't seem to exist in /usr/ports/distfiles/.
>> Attempting to fetch from ftp://ftp.mozilla.org/pub/mozilla/releases/mozilla0.9/src/.
Receiving mozilla-source-0.9.tar.bz2 (25066194 bytes): 30%^C
7545400 bytes transferred in 482.1 seconds (15.29 kBps)

fetch: transfer interrupted
# 

The difference is quite a bit, and extremely noticable.  Both machines
are plugged into the same hub (a 10/100 NetGear -- yes, I know, I need
to go buy a switch).

Here's the ifconfig output for xl0 on the desktop...

# ifconfig xl0
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.4 netmask 0xffffff00 broadcast 192.168.1.255
        ether 00:10:4b:0f:d1:3e 
        media: autoselect (10baseT/UTP) status: active
        supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
# 
And here's the output for rl0 on the desktop...

# ifconfig rl0
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.2 netmask 0xffffff00 broadcast 192.168.1.255
        ether 08:00:46:1c:d9:c8 
        media: 10baseT/UTP <full-duplex> status: active
        supported media: autoselect 100baseTX <full-duplex> 100baseTX 10baseT/UTP <full-duplex> 10baseT/UTP 100baseTX <hw-loopback>
# 

The performance from the D-Link card on the laptop is about the same as
the built-in rl0.

I'm totally confused as to why this is happening.  I know the RealTek
stuff sucks, but I can't imagine it sucks so much that I'd see over
100kBps difference between the two.  I've tried swapping ethernet
cables, and had the same result.

Anybody have an idea what's going on here?

- jim

-- 
- jim mock <jim@compete.com>      www.compete.com - jim@FreeBSD.org -
- senior systems administrator - Compete, Inc. - ph: 1.617.867.7035 -

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