Measuring Git performance with OpenTelemetry

In 2017, Microsoft began migrating its massive codebases for Windows and Office to Git, revealing significant performance challenges due to their size. To address these, Microsoft's Git client team focused on improving Git's scalability, leading to the development of Trace2, a performance logging framework introduced in 2019. Trace2 enables detailed analysis of Git's performance by emitting messages at key points in commands, aiding organizations in understanding and optimizing their Git usage. Recognizing the increasing demand for Git to handle large repositories, an open-source tool was introduced to integrate Trace2 data into the OpenTelemetry ecosystem for enhanced visualization and analysis. This tool allows users to monitor Git's performance, identify inefficiencies, and make informed improvements. The initiative emphasizes democratizing performance analysis, offering tools for both individual statistics and enterprise-level insights. Additionally, partitioning data by criteria such as repository size and configuration can further refine performance understanding, although users are advised to consider legal and ethical implications when collecting data.