Performance Concepts: Difference between revisions
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* Service Time in Queueing Theory. | * Service Time in Queueing Theory. | ||
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Response time and service time diverge as saturation becomes worse. | |||
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Revision as of 21:21, 2 November 2016
Internal
Throughput
In general terms, throughput is the rate at which something can be produced, consumed or processed.
Latency
- How NOT to Measure Latency https://www.infoq.com/presentations/latency-response-time
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.
Queueing Theory
https://en.wikipedia.org/wiki/Queueing_theory
- Response Time in Queueing Theory.
- Service Time in Queueing Theory.
Response time and service time diverge as saturation becomes worse.
Organizatorium
- Don't censor bad data, don't throw away data selectively.
- Never average percentiles.
- Coordinated omission. Coordinate omission usually makes something that you think is a response time metric only represent a service time component.
- Response Time in Queueing Theory.
- Service Time in Queueing Theory.