Bandwidth Problems with Freebsd 5.x

Mathieu CHATEAU gollum123 at
Sun Feb 19 12:18:17 PST 2006

Hello ptitoliv,

Sunday, February 19, 2006, 6:54:33 PM, you wrote:

p> Mathieu CHATEAU a écrit :

>>try this:
>>ping -c 1000 -s 1500 IP_TO_PING
>>wait for the 1000 ping to go trough. You should not have more than
>>0,5% of loss (is the servers aren't overload). If it's more or equal
>>than 0,5%, it comes from the network (cables or switches fault).
>>Each host would be in 100 full (via autoselect to be sure the conf is
>>ok on the switch).
p> I made the tests on the two boxes => 0 % packet loss.

p> I man an other interesting test. I try to transfert between the BSD Box
p> and a server located at home behind my 1MB/s ADSL Line. Here are the
p> results :

FreeBSD box =>> Workstation at home : 300 kB/s
p> Debian box on the same network  => Workstation at home : 950 kB/s.

p> This test confirms cleraly that there is a problem with the BSD, I guess.

p> Could it be a bug from the VR driver ?

p> Regards,
p> Ptitoliv

At this point,
a tcpdump while transfering may help.

Are the debian & freebsd on the same segment ?
if so, are they using the same router/gateway ?

did you customize/set up things, like ipfw or set specific things via
sysctl ?


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