The purpose of the statistics server is to collect statistical information from all servers in the system. The statistics server stores the data, in memory, saving the data at a specified interval of time.

The statistics system operates with two types of statistics types: timed information and timeless information. Timed information is a value recorded over time (ex. Response time, workload etc.), . Timeless information, is a value but where time does not have any meaning (ex. Internal execution time, counting etc.).

Timed statistical elements are stored internally, in arrays where each array element (called timeslot), represents one or more statistical data elements. Each timeslot is updated when new data is “added”.

Time based statistics and how it is stored

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