This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.
This TYPO3 Extension analyzes and can profile all SQL queries created by $GLOBALS['TYPO3'].
After installation you should visit the extension configuration in extension manager. Here you can activate logging for FE and/or BE queries. With an additional checkbox you can activate on-detail profiling for each query. Be careful with this last checkbox. It may slow down your system drastically.
After saving extension configuration you will find a new TYPO3 module in Backend. Switch between the different reports via selecting them with selectbox at top.
Happy reading and analyzing
Please deactivate logging after analyzing. Else you will flood your database with a really huge amount of analyzing data. I have added you a new entry in Clear-Cache menu to truncate all profiling data.