Today’s rapidly evolving software systems continuously introduce new changes that can potentially degrade performance. Large-scale load testing prior to deployment is supposed to avoid performance regressions in production. However, due to the large input space in parameterized load testing, not all performance regressions can be prevented in practice. To support developers in identifying the change sets that had an impact on performance, we present TemPerf, a tool that correlates performance regressions with change sets by exploiting temporal constraints. It is implemented as an Eclipse IDE plugin that allows developers to visualize performance developments over time and display temporally correlated change sets retrieved from version control and continuous integration platforms.