any documentation on tpcc-mysql benchmark tool Where can I find tpcc-mysql documentation? I google it but I can't find any documentation about it.
Here's a recent blog post (2013-07-01) that shows how to use tpcc-mysql and graph results:

http://www.mysqlperformanceblog.com/2013/07/01/tpcc-mysql-simple-usage-steps-and-how-to-build-graphs-with-gnuplot/

This is written by Michael Rikmas, who is a super nice guy, and a long time Percona support engineer.