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Network-Based Aggregation.

Each host uses a UDP socket to listen for statistics advertised by other hosts. The statistics include the average latency and number of IOs per LUN. Each host either broadcasts its data on a common subnet, or sends it to every other host individually. This is an instance of the general average- and sum-aggregation problem for which multicast-based solutions also exist [29].

Ajay Gulati 2009-01-14