Function benchmark

tests/random/random.go:101–126

benchmark runs the benchmark and returns the measured download speeds.

(l *zerolog.Logger, name string, urls []string, n int)

// benchmark runs the benchmark and returns the measured download speeds.
func benchmark(l *zerolog.Logger, name string, urls []string, n int) ([]float64, float64) {
	log := l.With().Str("mode", name).Logger()

	// Group the SAS URLs randomly into groups of size n
	groups := math.RandomizedGroups(urls, n)

	// Download the SAS URLs in each group and measure the download speed
	var speeds []float64
	failures := 0

	var wg sync.WaitGroup
	for _, group := range groups {
		wg.Add(1)
		go func(group []string) {
			defer wg.Done()
			s, f := downloadSASURLs(&log, group)
			speeds = append(speeds, s...)
			failures += f
		}(group)
	}

	wg.Wait()

	// Calculate the percentiles
	return math.PercentilesFloat64Reverse(speeds, 0.50, 0.75, 0.9, 0.99, 1), float64(failures) / float64(len(urls))
}

// getP2pSasUrls returns the SAS URLs for the p2p network
func getP2pSasUrls(upstreamSasUrls []string, proxyHost string) []string {