Module: HeapScope::Overhead

Defined in:
lib/heapscope/paths.rb

Overview

Self-overhead profiler to avoid HeapScope dominating the workload.

Class Method Summary collapse

Class Method Details

.measure_snapshot(mode: :lightweight, runs: 3) ⇒ Object 



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# File 'lib/heapscope/paths.rb', line 49

def measure_snapshot(mode: :lightweight, runs: 3)
  times = runs.times.map do
    t0 = Process.clock_gettime(Process::CLOCK_MONOTONIC)
    snap = HeapScope.snapshot(mode: mode, max_objects: 50_000)
    elapsed = Process.clock_gettime(Process::CLOCK_MONOTONIC) - t0
    { seconds: elapsed, duration_ms: snap.duration_ms, classes: snap.class_stats.size }
  end
  {
    mode: mode,
    runs: times,
    avg_seconds: (times.sum { |t| t[:seconds] } / times.size).round(4),
    note: "HeapScope overhead for this mode on this machine."
  }
end