Abstract:The message bus service provides topic based message subscription and release for each module of the distribution master station system, and its main service is the open source software Kafka. In view of the performance of the message bus, the main performance indexes, such as large data capacity and data processing rate, are analyzed. A test framework for mass data processing and rate statistics is designed. The framework is implemented mainly by Qt/C++.The practical application shows that the test framework is simple and easy to operate, and the test efficiency is improved to a great extent.