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Merge pull request #7522 from prometheus/beorn7/doc

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Add an explanation for φ-quantile to the operators section
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Björn Rabenstein 2020-07-06 22:15:52 +02:00 committed by GitHub
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docs/querying/operators.md
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@ -226,6 +226,11 @@ time series is the number of times that sample value was present.
the input samples, including the original labels, are returned in the result the input samples, including the original labels, are returned in the result
vector. `by` and `without` are only used to bucket the input vector. vector. `by` and `without` are only used to bucket the input vector.
`quantile` calculates the φ-quantile, the value that ranks at number φ*N among
the N metric values of the dimensions aggregated over. φ is provided as the
aggregation parameter. For example, `quantile(0.5, ...)` calculates the median,
`quantile(0.95, ...)` the 95th percentile.
Example: Example:
If the metric `http_requests_total` had time series that fan out by If the metric `http_requests_total` had time series that fan out by