High Quality Content by WIKIPEDIA articles! HP LoadRunner software is an automated performance and testing product from Hewlett-Packard for examining system behaviour and performance, while generating actual load. HP acquired LoadRunner as part of its acquisition of Mercury Interactive in November 2006. HP LoadRunner can emulate hundreds or thousands of concurrent users to put the application through the rigors of real-life user loads, while collecting information from key infrastructure components (Web servers, database servers etc.) The results can then be analyzed in detail, to explore the reasons for particular behavior. HP LoadRunner is sold as part of the HP IT Management Software category by the HP Software Division.