Bandwidth Monitoring Help!

coolest_2008 · 08-14-2010, 01:51 PM

Hey Guys,
I have recently purchased dedicated box for game servers, I just wanted to install bandwidth monitoring software, however i have read comments regarding it as it uses lot of cpu resources. There is another method to monitor bandwidth using iptables. But that article is too complex for me:
www.linux.com/archive/articles/50649]Linux.com
I just want to check my overall bandwidth not from any particular ports.
Can anyone help me in teaching commands to do that, as my new to Fedora. I use ssh to control my server.

THANKS

Berhanie · 08-14-2010, 10:22 PM

ifconfig will show you the total number of bytes transmitted and received on each interface, e.g.

Code:

eth0      Link encap:Ethernet  HWaddr XX:XX:XX:XX:XX:XX
          ...
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44200768 errors:0 dropped:0 overruns:0 frame:0
          TX packets:46769640 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:25349904345 (23.6 GiB)  TX bytes:32515615034 (30.2 GiB)

Subtracting the output from the previous time the command was run will
give you number of bytes received/transmitted in that period. Dividing
by the time period, you will have the bandwidth as well.

coolest_2008 · 08-15-2010, 02:24 AM

First of all thanks a lot for replying me.
I am just wondering I have already downloaded around 5GB of data(approximately) and this is what i get by running the command
RX bytes:24321584 (23.1 MiB) TX bytes:42002829 (40.0 MiB)

which is very less

please help
thanks

Berhanie · 08-15-2010, 03:21 AM

has the machine been rebooted since the download?

otherwise, it might have to do with the fact that yours
is a 32-bit machine (mine is 64-bit). you might have to do
a little research to find the max counter size (e.g. 2^32),
and do the subtraction modulo that number (and run ifconfig
often).

LVsFINEST · 08-15-2010, 07:26 AM

Another possible option is using SNMP. If by chance you have some old hardware lying around, you could install Apache+OpenNMS on it to offload most of the load from your game server. Then all your game server box would have to run is snmpd, which doesn't use alot of resources. This would give you visual graphs of bandwidth usage over time per interface, and if your switch/router/gateway supports SNMP, you could pull bandwidth stats from that too.

suprstar · 08-16-2010, 11:08 AM

http://bwmon.sourceforge.net/

bwmon is an opensource real-time bandwidth monitoring tool I use all over the place.

top shows is using 0% of everything all day long:

26642 root 16 0 15472 944 688 S 0.0 0.0 0:00.00 bwmon

coolest_2008 · 08-22-2010, 06:49 PM

Hey
I would like to thanks all of you for replying me.
I am using ifconfig to check my bandwidth and i rebooted my machine thats why it didnt show up the previously downloaded bandwidth.
Once again thanks