Monitoring data visualization for ATLAS TDAQ transient storage

The transient storage of the ATLAS 1 data acquisition system records physics data at several GB/s. Its performance and reliability have a direct impact on the performance of the whole data acquisition system of ATLAS. Monitoring its performance is a key operational task, so a monitoring web application exists for this purpose. I was in charge of integrating interactive plots to this application. I also aimed to improve the user experience, and participate in the evolution of the application’s features, robustness and performance. Through this work, many valuable lessons were learned, which I will also outline in the present document.