• Leigh B. Stoller's avatar
    Add summary node utilization stats. The initial values are derived by · 21890006
    Leigh B. Stoller authored
    processing the node_history table, but that is *way* too slow to do on
    the fly (say, from the web interface) cause of the number of records,
    so the summary info is stored in the new node_utilization table. I
    generate the summary info as new entries are added to node_history (in
    SetNodeHistory) but if that becomes too messy, we can just as easily
    shift to processing the table on a nightly basis.
    Note that I added a new "inception" date field to the nodes table,
    which will get set on new nodes, but for existing nodes I have to
    derive it from the first entry in the node_history table, or else the
    numbers will not make sense.