Performance Concepts

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Internal

Throughput

In general terms, throughput is the rate at which something can be produced, consumed or processed.

Latency

Latency and response time are synonymous: the length of time it takes something interesting to happen.

Standard deviation does not have any meaning for a dataset that describes latency. It is not relevant.

Organizatorium

  • Don't censor bad data, don't throw away data selectively.
  • Never average percentiles.
  • Coordinated omission.
  • Response Time in Queueing Theory.
  • Service Time in Queueing Theory.