vPerformer - Version 1.0 vPerformer is a load and performance testing product that can be used assess the performance and scalability of your web applications. vPerformer allows you to assess how your web application responds when it is concurrently accessed by a large number of users. You can measure the performance characteristics of your application by recording and replaying automated scripts that simulate a large number of concurrent virtual users.In addition to showing you the performance characteristics of your own application, vPerformer enables you to monitor the state of any associated external component that influences the behavior of your application. These components include operating systems, web servers, application servers, database servers, network devices, and SNMP implementations of various vendors. This allows you to identify performance bottlenecks and pinpoint the source of the performance problem.