Les Mikesell wrote: > Have you looked at OpenNMS? It's only scaling issue is how fast you can > write the rrd files out. It can use a pure-java rrd implementation with > a different file format (.jrb) or rrdtool if you prefer. There's a way > to query the min/max/average for a time range via http if you want to > gather some longer-term values for better-formatted trend watching or > aggregate groups of related instances. Not in a few years, a lot of systems rely on storing only one or two data points in a file, is OpenNMS like this(still)? I store upwards of 20 points in a file, drastically improves scalability, really breaks many of cacti's core assumptions that one data point is associated to a file. It looks like OpenNMS has a "store by group" feature to group data points but no obvious information on what that feature does specifically and why it may not be enabled by default. nate