Welcome to the most active Linux Forum on the web.
Go Back > Forums > Linux Forums > Linux - Networking
User Name
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.


  Search this Thread
Old 12-29-2012, 02:21 PM   #1
Registered: Jul 2005
Location: Lund, Sweden
Distribution: Debian
Posts: 78

Rep: Reputation: 23
Strange network speeds


I'm hoping someone could help me shed some light on some interesting network speeds I just discovered.

My linux machine tells me (using that I can reach ~169Mbps download and 53 Upload. My windows machine however gives me 96 down and 95 up.

So for some reason my windows box can't get the full speed the linux box does, but on the other hand it can get almost twice the upload. I find this really odd since it is sitting nehind the linux box.

I have a setup with a linux (mandriva) machine running as the router/firewall and then a windows machine behind it (passing through a gigabit switch). Both the linux box and the windows machine have gigabit NICs and the switch is gigabit as well. ethtool reports 1000Mb/s for both NICs on the linux machine. The switch reports (by color of a LED) that there is 1000Mb/s connection to both boxes.

My ISP has told me I will be getting an upgrade to .5-1Gbps FD beginning of next year (I'm currently on 100/Mbps FD). But I wanted to check out the speed beforehand.

So, how come I get so different, and oposite, performance from my machines? And what can I do to:
A. Get the same download speed for my windows box
B. Get the same upload speed for my linux box

This really stumps me, so any suggestion is appreciated. Let me know any logs/commands you wish me to run.
Old 01-29-2013, 12:59 AM   #2
LQ Guru
Registered: Dec 2011
Distribution: Slackware
Posts: 8,290
Blog Entries: 14

Rep: Reputation: Disabled

Sorry to hear that your having unusual speeds.
I'm not sure why but running some commands will give us some clarification and we can go from there. I'm not the expert with this; BTW.
I saw that your thread was posted a while back and I will do my best to help you.

The other command if your using a usb adapter that could help would be to try running:

Last edited by Ztcoracat; 01-29-2013 at 01:02 AM.
Old 01-29-2013, 01:13 AM   #3
Senior Member
Registered: Jul 2012
Location: Grenoble, Fr.
Distribution: Sun Solaris, RHEL, Ubuntu, Debian 6.0
Posts: 1,800
Blog Entries: 4

Rep: Reputation: 286Reputation: 286Reputation: 286
What is your DNS setting?
And from whare and how are you downloading contents (using any download manager or mirrors or direct download)?


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] awfull network speeds JonathanWilson Linux - Networking 6 12-16-2011 11:44 AM
Slow network speeds pyschomike15 Linux - Networking 9 02-27-2005 06:26 PM
Network Speeds lin00b Linux - Networking 2 08-30-2004 09:40 AM
Strange speeds copying files to gateway machine Kristijan Linux - Networking 2 07-30-2004 06:32 AM
network card speeds mcr525 Linux - Networking 1 04-17-2002 07:41 AM > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 07:49 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration