Always set the AgeLimit to 0
By default Gaudi keeps the last three ROOT files open when reading data. I can see how this would have been useful for RDST but for Run 3 I don't think we have any use case for needing more than one file in flight at a time?
If so, would it be practical to set config["Gaudi::IODataManager/IODataManager"].AgeLimit = 0
by default in PyConf to avoid the memory spikes when opening the second and third file in a job, for example (ignore the memory leak
cc @clemenci