We have released the Benchmark Toolkit as an Open Source Project on CodePlex. You can use the Benchmark Toolkit to stress and performance test your AX application or custom classes. The Benchmark Toolkit comes with a predefined set of 12 scenarios such as Sales Order and Project Quotation. You are free to modify these to fit your scenario. The Benchmark Toolkit also comes with the Programming Model Proxy which will allow you to choose X++ classes, enums and tables from your AOT and automatically generate C# proxy code for calls into Microsoft Dynamics AX Business Connector. For more information visit our CodePlex website.