Struct Histogram

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pub struct Histogram { /* private fields */ }

Expand description

A fixed-bucket histogram for recording distributions.

Each bucket tracks a count of values <= the bucket boundary. The sum and count fields track totals for mean calculation.

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impl Histogram

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pub fn new(boundaries: &[f64]) -> Self

Create a histogram with the given bucket boundaries.

Boundaries are sorted ascending. An implicit +Inf bucket is always present.

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pub fn with_defaults() -> Self

Create a histogram with default bucket boundaries.

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pub fn record(&self, value: f64)

Record a value in the histogram.

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pub fn total_count(&self) -> u64

Get the total count of recorded values.

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pub fn sum(&self) -> f64

Get the sum of all recorded values.

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pub fn bucket_snapshot(&self) -> Vec<(f64, u64)>

Get a snapshot of bucket boundaries and their cumulative counts.

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pub fn percentile(&self, p: f64) -> Option<f64>

Estimate a percentile value from the histogram buckets.

Uses linear interpolation between bucket boundaries. Returns None if no values have been recorded.

Auto Trait Implementations§

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impl UnwindSafe for Histogram

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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impl<T> BorrowMut<T> for T
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impl<T> From<T> for T

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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