Bandwidth usage
Hi all,
This might sound like a noob question but I was wondering what is the command to monitoring bandwidth usage? I have this is server at work that keeps going down every week but its b/c they saturate their bandwidth. What other command can I run to monitor server resources. thanks. |
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Thanks for the reply but one more question. I ran the following command like you suggested on my CentOS VM server and i received the following results:
# iptables -L -v Chain INPUT (policy ACCEPT 214 packets, 13643 bytes) pkts bytes target prot opt in out source destination Chain FORWARD (policy ACCEPT 0 packets, 0 bytes) pkts bytes target prot opt in out source destination Chain OUTPUT (policy ACCEPT 231 packets, 16217 bytes) pkts bytes target prot opt in out source destination Could you please break it down and explain the above? Thanks again. |
Try out
Code:
iperf |
Install iperf
If you are using Debian / Ubuntu Linux, enter: $ sudo apt-get install iperf If you are using FreeBSD, enter: # cd /usr/ports/benchmarks/iperf # make install clean Source code installation for RHEL / CentOS: # gunzip -c iperf-.tar.gz | tar -xvf - # cd iperf- # make; make install Start iperf on server To start iperf on server, type the following command: freebsdbox # /usr/local/bin/iperf -s Output: ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 64.0 KByte (default) ------------------------------------------------------------ Test iperf from client Let us connect to our freebsdbox, enter: $ iperf -c freebsdbox Output (note my freebsdbox is on slow vsat link): ------------------------------------------------------------ Client connecting to freebsdbox, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.106 port 40256 connected with 71.zzz.xxx.yyy port 5001 [ 3] 0.0-10.7 sec 624 KBytes 480 Kbits/sec The last line (the red numbers) specifies the speed. Use UDP rather than TCP The -u option force to use UDP. The following example run udp test and bandwidth to send at in bits/sec is specified using the -b option: $ iperf -c rhelbox -u -l 512 -b 10m |
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