How to visualize k6 results: guidelines for choosing the right metrics

Visualizing k6 test results is crucial for effective performance analysis, and k6 offers a variety of tools and methods to facilitate this. The ability to output test metrics in multiple formats, such as CSV, JSON, and Prometheus remote-write, allows users to choose the best visualization tools and storage backends for their specific needs. Visualization helps identify performance trends, with stable system performance typically represented by flat lines in graphs, while degradation is indicated by sharp upward trends. k6 also supports extensions and custom outputs, enabling users to tailor the visualization process to their requirements, using tools like Grafana and xk6-dashboard for real-time monitoring. Additionally, end-of-test summaries and granular data output provide different levels of insight, making k6 a flexible choice for performance testing and visualization, especially when integrated with platforms like Grafana Cloud.

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