Method ComputeZ

deps/v8/tools/perf-compare.py:42–45

(baseline_avg, baseline_sigma, mean, n)

  @staticmethod
  def ComputeZ(baseline_avg, baseline_sigma, mean, n):
    if baseline_sigma == 0:
      return 1000.0;
    return abs((mean - baseline_avg) / (baseline_sigma / math.sqrt(n)))

  # Values from http://www.fourmilab.ch/rpkp/experiments/analysis/zCalc.html
  @staticmethod