Hi all, I've just uploaded the new version of my Progression benchmarking library to Hackage (http://hackage.haskell.org/package/progression). Progression is a utility built on top of Criterion that helps you record benchmark times for several different versions of your code and then draw graphs to compare them. The latest version adds: support for normalisation of benchmark times, support for drawing bar charts, and allows for more detailed configuration of how the data is arranged before plotting. I've written in more detail about the changes in a blog post (http://chplib.wordpress.com/2010/03/02/progression-0-3-bar-charts-and-normal...), which also has an example of a normalised bar chart generated with the new version. Thanks, Neil.