Workload analyzer was introduced in SAP ASE 16.0 SP02. This video provides an overview of the WA functionality.
The video is also available on YouTube at https://www.youtube.com/watch?v=w02qo9WHLsw.
For official Worklod Analyer docs, see http://help.sap.com/saphelp_ase1602/helpdata/en/99/9715678b6b468984dec3690e1016cc/frameset.htm