The aim of the Event Monitoring service (EMON) is to provide on-line sample of events to users' monitoring tasks within the ATLAS TDAQ system. The Event Monitoring service allows user applications to sample event data flowing through the TDAQ system. User programs may request event fragments or full events with particular characteristics from the EMON which fulfils the request.
EMON implementation is available in C++ and Java as part of the TDAQ Software releases.