Overview

This is a simple script that can read tcpdump full of statsd traffic and then display summary information. It will give you:

• The most prolific hosts.
• The hottest keys.
• The hottest key prefixes.

It displays each of these in a table with absolute counts, a PDF and a CDF (where applicable).

You could use this if you are, for example, trying to figure out where to add sampling.

Instructions

Install requirements (you probably want to be using some form of virtualenv):

pip install -r requirements.txt

Take a tcpdump on the statsd server:

tcpdump -c3000000 -A -wstats.pcap -t dst port 8125 

Then pass that data to this script on stdin:

./statsdump.py < stats.pcap

Voilà.