The Gatherer – a mechanism for integration of monitoring data in ATLAS
P. Renkel, Atlas Atlas · Journal of Physics Conference Series · 2010
The ATLAS experiment triggering system is distributed across large farms of approximately 6000 nodes. Online monitoring and data quality runs alongside this system. We have designed a mechanism that integrates the monitoring data from different nodes and makes it available for shift crews. This integration includes adding or averaging of histograms, summing of trigger rates, and combination of more complex data types across multiple monitoring processes. Performance milestones have been achieved which ensure the needs of early datataking will be met. We will present a detailed description of the architectural features and performance.