System and performance testing method of an IT infrastructure

The system (100) for testing performance of an infrastructure (200) computer system comprising a scheduler (14) and a plurality of injectors (10, 12), each injector (10, 12) for injecting queries in an area (3.4) the network infrastructure (200) computer, according to a predefined performance test scenario, the scheduler (14) configured to install each injector (10,12) in an area (3,4) network predetermined and communicated to each injector (10,12) a predefined performance test scenario, the predefined performance test scenario is unique to each injector (10,12), each zone (3,4) predetermined network and each scenario predefined performance test is specified in a file (15) configuration provides the input to the scheduler (14).