Module: HeapScope::Extrapolation

Defined in:
lib/heapscope/extrapolation.rb

Overview

Extrapolates retention rate into a labeled estimate. Never presented as guaranteed.

Class Method Summary collapse

Class Method Details

.objects_per_run(retained_objects:, runs:) ⇒ Object 



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# File 'lib/heapscope/extrapolation.rb', line 20

def objects_per_run(retained_objects:, runs:)
  return nil if runs.nil? || runs <= 0

  {
    retained_objects_per_run: (retained_objects.to_f / runs).round(2),
    label: "per-run retention"
  }
end

.retention_per_hour(retained_bytes:, elapsed_seconds:) ⇒ Object 



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# File 'lib/heapscope/extrapolation.rb', line 8

def retention_per_hour(retained_bytes:, elapsed_seconds:)
  return nil if elapsed_seconds.nil? || elapsed_seconds <= 0 || retained_bytes.nil?

  rate = retained_bytes.to_f / elapsed_seconds
  {
    bytes_per_second: rate.round(2),
    bytes_per_hour: (rate * 3600).round,
    label: "extrapolation",
    caveat: "At the current observed retention rate — not a prediction of future usage."
  }
end