def detectRegression()

in regression_report_v2.py [0:0]

• 8 lines of code
• 3 McCabe index (conditional complexity)

def detectRegression(urlToBenchmark, stds, scores, baselineSize, minRegressionRatio, minInstabilityMultiplier,
                     direction, execName):

    sustainable_x = [min(scores[i - 3: i]) for i in range(3, min(len(scores), baselineSize))]
    baseline_throughput = max(sustainable_x)
    current_throughput = max(scores[-3:])
    current_instability = stds[-1] / current_throughput
    if direction * (1 - current_throughput / baseline_throughput) > max(minRegressionRatio,  direction * minInstabilityMultiplier * current_instability):
        print "<%s|%s(%s)> baseline=%s current_value=%s" % (urlToBenchmark, benchmark, extractJavaVersion(execName), direction * baseline_throughput, direction * current_throughput)