Performance testing of time series processing systems requires a high amount of technical knowledge. Some stakeholders in the software development process lack the required knowledge and therefor cannot understand let alone write performance tests for their systems. Also, writing performance tests in programming languages is time consuming. To target those problems, this thesis proposes a domain specific language that focuses on usage even without much technical knowledge. It is also designed for ease of use to reduce the necessary time to write a test. To make usage of our domain specific language possible without much technical knowledge, the stakeholders were divided into two groups. Developers with much technical knowledge do a onetime configuration of the systems used in the tests. Users can then write performance tests for the configured systems using our domain specific language. An interpreter for the language realizes the expected behavior. To ensure future changes and additions can be integrated into our solution, it is designed to be highly extensible. A small user-study was performed to evaluate the usage as well as advantages and disadvantages of the proposed solution. The results confirmed the desired ease of use of our language.