Author: Kocevar, H.
Paper Title Page
WEPV048 An Archiver Appliance Performance and Resources Consumption Study 774
  • R.N. Fernandes, S. Armanet, H. Kocevar, S. Regnell
    ESS, Lund, Sweden
  At the European Spallation Source (ESS), 1.6 million signals are expected to be generated by a (distributed) control layer composed of around 1500 EPICS IOCs. A substantial amount of these signals - i.e. PVs - will be stored by the Archiving Service, a service that is currently under development at the Integrated Control System (ICS) Division. From a technical point of view, the Archiving Service is implemented using a software application called the Archiver Appliance. This application, originally developed at SLAC, records PVs as a function of time and stores these in its persistent layer. A study based on multiple simulation scenarios that model ESS (future) modus operandi has been conducted by ICS to understand how the Archiver Appliance performs and consumes resources (e.g. RAM) under disparate workloads. This paper presents: 1) The simulation scenarios; 2) The tools used to collect and interpret the results; 3) The storage study; 4) The retrieval study; 5) The resources saturation study; 6) Conclusions based on the interpretation of the results.  
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About • Received ※ 10 October 2021       Accepted ※ 11 February 2022       Issue date ※ 12 March 2022  
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