I am having a bit of trouble creating a proper disk resident Ntuple. I used TFile to create a file before I created the Ntuple, which should have made the Ntuple disk resident, according to my understanding. I set the buffer size of the Ntuple at 16000 Kb, and still, I could watch my DAQ program eat all of the RAM and swap space on the Red Hat Linux 5.0 PC I'm working on (the machine has more than 16 Mb of RAM). If I let the program continue, filling 128 variables with each run, it gives an error before the completion of 100 runs: Fatal in <operator new>: storage exhausted aborting Suggestions?
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