Very slow Internet on Debian Squeeze.

miros84 · 12-25-2012, 12:07 PM

I have dual boot. Debian Squeeze and Windows 7.
I just made a clean install Debian Squeezy. Debian 6.06

I had several restart and test internet speed and:

Windows 7 speed - 10Mb
Debian 6 - 1Mb

Also I note that in Debian is very slowly woking in internet.
I just install Debian. Any idea what is wrong and Internet in Debian is so slowly?
My motherboard is Asrock Extrame 3

teckk · 12-25-2012, 01:36 PM

Look and see what you have going on. Speed of device, DNS servers, etc.

Code:

ethtool eth0

or

Code:

ethtool eth0 | grep -i speed

Code:

man ethtool

Couple of thoughts
How are you checking this speed? Look and see what download speed that you are getting. Example,

Code:

wget --output-document=/dev/null http://speedtest.wdc01.softlayer.com/downloads/test500.zip

Are you using the same DNS server on Microsoft and Linux? (Web addres to IP) All these work ok.
208.67.222.222 #OpenDNS
208.67.220.220 #OpenDNS
8.8.4.4 #Google
8.8.8.8 #Google

Check your network device hardware/software with a debian compat list.

miros84 · 12-25-2012, 01:58 PM

Hello
I think if that mey be a driver problem.
I just did a new clean install of Debian Wheeze. And internet works perfect.
I try to navigate to internet and also it works perfectly.

About DNS I didnot change nothing. I did all with default settings.
I tried

Quote:

ethtool eth0

but no command is found.

And Internet is just slowly. I need 5 minutes to open 3,4 pages in internet.
In Windows 7 and Debian Wheezy it just works fine.

In resolv.conf I have

Quote:

# Generated by NetworkManager
nameserver 192.168.1.1

Shadow_7 · 12-26-2012, 10:58 AM

Given the 1:10 ratio, perhaps a 10mbps vs. 100mbps ethernet configuration. Something about mii-tool from the old days or some such. Or do you have one of those gigabit card scenarios? It looks like the current tool looks a bit like below.

# apt-get install ethtool
# ethtool eth0
...
...
Speed: 100Mb/s
Duplex: Full
...
...
(or something similar is what you would like to have, if it says 10Mb/s, there's your issue)

You might also check the routing. Some avahi stuff likes to create a default route 169.???.???.??? that can slow a network down or even disable it. Something about a fall back network, when dhcp fails, but it's always there in my experience and doesn't accomplish anything more than lo (aka 127.0.0.1) as far as I care to investigate it. I just purge that process and manually fudge the routing to remove that entry.

Beyond that toying with the devices MTU setting might get you a little more performance out of the device. 1500 is the default and many ISPs seem noticeable better at 1492. With an MTU size of 576 for the old dialup days. Some of which may depend on what you're putting across the network, lots of large binary files, or tons of tiny emails or mmorg packets.