[Asterisk-Users] Bandwidth measurement tool: bmtools

[John Todd]

This is not specifically on-topic for Asterisk, but I have found on 
many occasions while working with Asterisk that it would have been 
very handy to be able to measure, with some precision, the bandwidth 
being used by a particular host, port, or combination of the two.

So, I went searching for various tools, none of which were what I 
wanted.  They either were too clever, or too limited in their 
abilities.

However, someone forwarded the link to this tool to me about an hour 
ago, and I've been thrilled that it does _exactly_ what I want.  I 
can use a BPF-style filter to monitor exactly what I'd like to watch, 
and it hands back results to me in "real time" down to a one-second 
interval.  Sometimes, a small program can make me very happy, and I 
suppose after a morning full of various system problems I'm overly 
happy have something that works and does just what I want it to.

This is useful for checking to see how much bandwidth a codec 
_really_ uses, or seeing what your total usage is between two IAX 
hosts, or pretty much anything that requires live examination of 
ethernet segment traffic.

http://s-tech.linux-pl.com/bmtools/


[root at ms1 bmtools-0.71]# ./rate -r 1 -f 'host 10.0.1.3 and not port ssh'
-> Currently 263.05 Bps/3.01 pps, Average: 263.05 Bps/3.01 pps
-> Currently 2706.00 Bps/17.00 pps, Average: 1486.97 Bps/10.02 pps
-> Currently 588.00 Bps/6.00 pps, Average: 1186.92 Bps/8.68 pps
-> Currently 440.00 Bps/4.00 pps, Average: 1000.00 Bps/7.51 pps
-> Currently 440.00 Bps/4.00 pps, Average: 887.91 Bps/6.81 pps
-> Currently 2080.00 Bps/16.00 pps, Average: 1086.72 Bps/8.34 pps
-> Currently 1282.00 Bps/9.00 pps, Average: 1114.64 Bps/8.43 pps
-> Currently 10385.00 Bps/20.00 pps, Average: 2274.01 Bps/9.88 pps
^C


JT