I have spent the past some weeks working on graphing traffic control information with RRDTool, so objective conclusions can be reached as to the effectiveness of particular shaping configurations with Linux’s traffic control facilities. Since nothing special was going on at the LUG meeting tonight, I did a brief presentation of what I had completed so far.

Presently it polls tc for information about the traffic shaping configuration every ten seconds and pushes that into an RRDTool database for analysis. The information allows you to make adjustments and see the effects in nearly realtime. A second operational mode allows the code to operate as a Munin plugin for long term trend analysis, once a configuration has been decided upon.