traf

Bandwidth usage graphs using rrdtool and OpenBSD's pf.

traf uses very little CPU time to update the RRD and graphs are generated on demand by a PHP script.

You need rrdtool installed before you can compile traf:

gcc traf.c -I/usr/local/include -L/usr/local/lib -lrrd -o traf

You'll need to set up your paths and permissions, and get traf running in the background with enough privileges to open /dev/pf. I use something like this:

#!/bin/sh
cd /chroot/htdocs/rrd
nohup ./traf &

I have a chrooted Apache so I made a /chroot/tmp directory, I put my timezone data in /chroot/usr/share/zoneinfo (if you don't do this you get UTC times) and I put a statically compiled rrdtool in /chroot/bin.

Sample output: