Ejemplo n.º 1
0
func main() {
	flag.Parse()
	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			log.Fatal(err)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	rand.Seed(time.Now().Unix())
	// numprocs, numprocsdef := 0, 0

	hw_threads := runtime.NumCPU()
	// if *threads < hw_threads {
	//  hw_threads = *threads
	// }
	// numprocsdef =
	runtime.GOMAXPROCS(hw_threads)
	//  numprocsdef = runtime.GOMAXPROCS(4)
	numprocs := runtime.GOMAXPROCS(0)

	if *server {
		distr.StartServer(clientType)
		return
	}

	log.Printf("====================================================\n")
	hostname, _ := os.Hostname()
	log.Printf("Starting go load generator with %d HW threads at %s \n", numprocs, hostname)
	duration, err := time.ParseDuration(*p_duration)
	if err != nil {
		panic(err)
	}
	// log.Printf("Hitting %s at %d reqs/s by %d clients during %v.", *p_addr, *p_rate, *threads, duration)
	parameters := core.TestParameters{Addr: *p_addr, Rate: float64(*p_rate), Duration: duration, Clients: *threads, SaveSamples: (*dataOutput != ""), SampleFile: *dataOutput}

	var globalResult result.Result
	if *commander {
		serverfilecontents, err := ioutil.ReadFile(*serverfile)
		if err != nil {
			panic(err)
		}
		lines := strings.Split(string(serverfilecontents), "\n")
		var servers []string
		for _, line := range lines {
			if strings.TrimSpace(line) != "" {
				servers = append(servers, line)
			}
		}

		log.Printf("Using serverfile %s with contents (%d) %v\n", *serverfile, len(servers), servers)
		globalResult = distr.StartCommander(parameters, servers, clientType)

	} else {
		globalResult = core.StartTest(parameters, clientType)
		result.PrintResult(globalResult, *threads)
		if parameters.SaveSamples {
			result.SaveToFile(&globalResult, parameters.SampleFile)
		}

	}

	// if totalResponses > 0
	// log.Printf("TOTAL %d responses in %v, Rate: %v, avgLatency: %v\n", totalResponses, duration, float64(totalResponses)/duration.Seconds(), time.Duration(avgLatency))

}
Ejemplo n.º 2
0
func StartCommander(p core.TestParameters, servers []string, cc core.ClientConstructor) result.Result {
	// servers := []string{"192.168.7.1:9988","192.168.9.1:9988", "192.168.10.1:9988",  "192.168.11.1:9988"}//,"192.168.8.1:9988",
	// servers = servers[0:4]
	if p.Clients-4 <= 0 || p.Rate-1000 <= 0 {
		res := core.StartTest(p, cc)
		result.PrintResult(res, p.Clients)
		return res
	}
	localParams := p
	localParams.Clients, localParams.Rate = min(4, p.Clients), math.Min(float64(1000), p.Rate)

	p.Clients, p.Rate = (p.Clients-localParams.Clients)/len(servers), (p.Rate-localParams.Rate)/float64(len(servers))
	log.Printf("Params to send: %v\n", p)
	//TODO : divide P properlu if #servers > 1
	var serverReady, serverStart sync.WaitGroup

	serverReady.Add(len(servers))
	serverStart.Add(1)

	returnChannel := make(chan result.ResultSummary)
	for i, address := range servers {
		time.Sleep(time.Duration(30 * 1000000))
		log.Println("spawning", address)
		if localParams.Clients == 1 && i == len(servers)-1 && i > 0 {
			p.Clients = p.Clients + 1
		}
		go serverHandler(address, p, &serverReady, &serverStart, returnChannel)
	}

	// wg.Add(localParams.Clients)
	// ready.Add(localParams.Clients)
	// start.Add(1)
	log.Printf("localParams %v\n", localParams)
	globalResult, localSync := core.SpawnWorkers(cc, localParams)

	localSync.WaitReady() // ready.Wait()
	serverReady.Wait()
	serverStart.Done()

	time.Sleep(time.Duration(100 * 1000)) //Sleep 50 µs ~ 1/2 RTT
	//start.Done()
	// wg.Wait()
	localSync.Go()
	localSync.WaitDone()

	rate := globalResult.AverageThroughput()
	clients := localParams.Clients
	errors := globalResult.N_errors

	log.Printf("LOCAL: %f (%d) \n", rate, globalResult.N_latencySamples)

	for range servers {
		summary := <-returnChannel
		rate += summary.AverageThroughput
		clients += summary.Clients
		errors += summary.N_errors
	}

	// printResult(*globalResult, localParams.Clients)
	// fmt.Println()

	fmt.Print(clients, "\t")
	globalResult.Sort()
	tails := []float64{0.5, 0.9, 0.99}
	fmt.Printf("%.1f\t%d", rate, result.Microseconds(globalResult.AverageLatency()))
	for _, v := range tails {
		fmt.Printf("\t%d", result.Microseconds(globalResult.Percentile(v)))
	}
	fmt.Printf("\t%d\n", errors)
	return *globalResult

}