Christopher Green contributed to the Unity-Technologies/InputSystem repository by implementing performance instrumentation within the Unity Input System. He introduced ProfilerMarkers to measure the performance of enabling and disabling InputActions as well as resolving input bindings, integrating these markers directly into core InputSystem methods. Using C# and leveraging his expertise in performance profiling, Christopher’s work established a foundation for data-driven analysis and future optimization of input handling. Although the contribution spanned a single feature over one month, the depth of integration enables more accurate profiling and faster diagnosis of performance issues, supporting ongoing improvements in Unity’s input processing workflows and system maintainability.