How GitLab's QA Team Leverages Performance Testing Tools

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The Quality team developed and released the GitLab Performance tool (GPT), built on k6, to automate load testing of GitLab environments. GPT includes a broad test suite, customization options, sequential test execution, enhanced reporting, and built-in success thresholds. It is integrated into GitLab CI pipelines for daily/weekly testing against reference architectures and for release comparison tests. The tool has helped identify performance bottlenecks and drive improvements, with results published on the GPT wiki.