Merge branch 'master' of github.com:simple-rules/harmony-benchmark

agent/main.go

@@ -1,73 +0,0 @@
-package main
-
-import (
-	"flag"
-	"fmt"
-	"time"
-
-	"github.com/shirou/gopsutil/process"
-	"github.com/simple-rules/harmony-benchmark/configr"
-	"github.com/simple-rules/harmony-benchmark/log"
-)
-
-var (
-	shardID string
-	ip      string
-	port    string
-	pid     int32
-)
-
-func logMemUsage() {
-	p, _ := process.NewProcess(pid)
-	for {
-		info, _ := p.MemoryInfo()
-		memMap, _ := p.MemoryMaps(false)
-		log.Info("Mem Report", "info", info, "map", memMap, "shardID", shardID)
-		time.Sleep(3 * time.Second)
-	}
-}
-
-func logCPUUsage() {
-	p, _ := process.NewProcess(pid)
-	for {
-		percent, _ := p.CPUPercent()
-		times, _ := p.Times()
-		log.Info("CPU Report", "percent", percent, "times", times, "shardID", shardID)
-		time.Sleep(3 * time.Second)
-	}
-}
-
-func main() {
-	_ip := flag.String("ip", "127.0.0.1", "IP of the node")
-	_port := flag.String("port", "9000", "port of the node.")
-	_pid := flag.Int("pid", 0, "process id of the node")
-	configFile := flag.String("config_file", "config.txt", "file containing all ip addresses")
-	logFolder := flag.String("log_folder", "latest", "the folder collecting the logs of this execution")
-	flag.Parse()
-
-	ip = *_ip
-	port = *_port
-	pid = int32(*_pid)
-	config, _ := configr.ReadConfigFile(*configFile)
-	shardID := configr.GetShardID(ip, port, &config)
-	leader := configr.GetLeader(shardID, &config)
-
-	var role string
-	if leader.Ip == ip && leader.Port == port {
-		role = "leader"
-	} else {
-		role = "validator"
-	}
-	// Setup a logger to stdout and log file.
-	logFileName := fmt.Sprintf("./%v/agent-%s-%v-%v.log", *logFolder, role, ip, port)
-
-	h := log.MultiHandler(
-		log.StdoutHandler,
-		log.Must.FileHandler(logFileName, log.JSONFormat()), // Log to file
-		// log.Must.NetHandler("tcp", ":3000", log.JSONFormat()) // Log to remote
-	)
-	log.Root().SetHandler(h)
-
-	go logMemUsage()
-	logCPUUsage()
-}

aws-experiment-launch/experiment/commander/main.go

@@ -36,7 +36,7 @@ type commanderSetting struct {
 	// Options in s3 mode
 	configURL string
 
-	configs [][]string
+	configr *configr.Configr
 }
 
 type sessionInfo struct {
@@ -54,14 +54,6 @@ const (
 	DefaultConfigUrl     = "https://s3-us-west-2.amazonaws.com/unique-bucket-bin/distribution_config.txt"
 )
 
-func readConfigFile() [][]string {
-	if result, err := configr.ReadConfigFile(DistributionFileName); err != nil {
-		panic(err)
-	} else {
-		return result
-	}
-}
-
 func handleCommand(command string) {
 	args := strings.Split(command, " ")
 	if len(args) <= 0 {
@@ -77,9 +69,9 @@ func handleCommand(command string) {
 			}
 		}
 
-		setting.configs = readConfigFile()
-		if setting.configs != nil {
-			log.Printf("The loaded config has %v nodes\n", len(setting.configs))
+		err := setting.configr.ReadConfigFile(DistributionFileName)
+		if err == nil {
+			log.Printf("The loaded config has %v nodes\n", len(setting.configr.GetConfigEntries()))
 		} else {
 			log.Println("Failed to read config file")
 		}
@@ -111,20 +103,21 @@ func config(ip string, port string, mode string, configURL string) {
 	} else {
 		setting.configURL = configURL
 	}
+	setting.configr = configr.NewConfigr()
 }
 
 func dictateNodes(command string) {
 	resultChan := make(chan int)
-	for _, config := range setting.configs {
-		ip := config[0]
-		port := "1" + config[1] // the port number of solider is "1" + node port
-		addr := strings.Join([]string{ip, port}, ":")
+	configs := setting.configr.GetConfigEntries()
+	for _, entry := range configs {
+		port := "1" + entry.Port // the port number of solider is "1" + node port
+		addr := strings.Join([]string{entry.IP, port}, ":")
 
 		go func(resultChan chan int) {
 			resultChan <- dictateNode(addr, command)
 		}(resultChan)
 	}
-	count := len(setting.configs)
+	count := len(configs)
 	res := 0
 	for ; count > 0; count-- {
 		res += <-resultChan

aws-experiment-launch/experiment/soldier/main.go

@@ -1,3 +1,10 @@
+/*
+Soldier is responsible for receiving commands from commander and doing tasks such as starting nodes, uploading logs.
+
+   cd harmony-benchmark/bin
+   go build -o soldier ../aws-experiment-launch/experiment/soldier/main.go
+   ./soldier -ip={node_ip} -port={node_port}
+*/
 package main
 
 import (
@@ -12,7 +19,6 @@ import (
 	"net"
 	"net/http"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"runtime"
 	"strings"
@@ -20,6 +26,7 @@ import (
 	"github.com/simple-rules/harmony-benchmark/aws-experiment-launch/experiment/soldier/s3"
 	"github.com/simple-rules/harmony-benchmark/aws-experiment-launch/experiment/utils"
 	"github.com/simple-rules/harmony-benchmark/configr"
+	globalUtils "github.com/simple-rules/harmony-benchmark/utils"
 )
 
 type soliderSetting struct {
@@ -33,6 +40,8 @@ type sessionInfo struct {
 	commanderPort       string
 	localConfigFileName string
 	logFolder           string
+	configr             *configr.Configr
+	myConfig            configr.ConfigEntry
 }
 
 const (
@@ -146,6 +155,9 @@ func handleInitCommand(args []string, w *bufio.Writer) {
 	utils.DownloadFile(globalSession.localConfigFileName, configURL)
 	log.Println("Successfully downloaded config")
 
+	globalSession.configr.ReadConfigFile(globalSession.localConfigFileName)
+	globalSession.myConfig = *globalSession.configr.GetMyConfigEntry(setting.ip, setting.port)
+
 	if err := runInstance(); err == nil {
 		logAndReply(w, "Done init.")
 	} else {
@@ -165,10 +177,10 @@ func handleKillCommand(w *bufio.Writer) {
 func killPort(port string) error {
 	if runtime.GOOS == "windows" {
 		command := fmt.Sprintf("(Get-NetTCPConnection -LocalPort %s).OwningProcess -Force", port)
-		return runCmd("Stop-Process", "-Id", command)
+		return globalUtils.RunCmd("Stop-Process", "-Id", command)
 	} else {
 		command := fmt.Sprintf("lsof -i tcp:%s | grep LISTEN | awk '{print $2}' | xargs kill -9", port)
-		return runCmd("bash", "-c", command)
+		return globalUtils.RunCmd("bash", "-c", command)
 	}
 }
 
@@ -269,61 +281,25 @@ func handleLog2Command(w *bufio.Writer) {
 	logAndReply(w, "Upload log done!")
 }
 
-func runCmd(name string, args ...string) error {
-	cmd := exec.Command(name, args...)
-	if err := cmd.Start(); err != nil {
-		log.Fatal(err)
-		return err
-	} else {
-		log.Println("Command running", name, args)
-		go func() {
-			if err = cmd.Wait(); err != nil {
-				log.Printf("Command finished with error: %v", err)
-			} else {
-				log.Printf("Command finished successfully")
-			}
-		}()
-		return nil
-	}
-}
-
 func runInstance() error {
-	config, _ := configr.ReadConfigFile(globalSession.localConfigFileName)
-
-	myConfig := getMyConfig(setting.ip, setting.port, &config)
-
 	os.MkdirAll(globalSession.logFolder, os.ModePerm)
 
-	if myConfig[2] == "client" {
+	if globalSession.myConfig.Role == "client" {
 		return runClient()
-	} else {
-		return runNode()
 	}
+	return runNode()
 }
 
 func runNode() error {
 	log.Println("running instance")
-	return runCmd("./benchmark", "-ip", setting.ip, "-port", setting.port, "-config_file", globalSession.localConfigFileName, "-log_folder", globalSession.logFolder)
+	return globalUtils.RunCmd("./benchmark", "-ip", setting.ip, "-port", setting.port, "-config_file", globalSession.localConfigFileName, "-log_folder", globalSession.logFolder)
 }
 
 func runClient() error {
 	log.Println("running client")
-	return runCmd("./txgen", "-config_file", globalSession.localConfigFileName, "-log_folder", globalSession.logFolder)
-}
-
-func getMyConfig(myIP string, myPort string, config *[][]string) []string {
-	for _, node := range *config {
-		ip, port := node[0], node[1]
-		if ip == myIP && port == myPort {
-			return node
-		}
-	}
-	return nil
+	return globalUtils.RunCmd("./txgen", "-config_file", globalSession.localConfigFileName, "-log_folder", globalSession.logFolder)
 }
 
-// cd harmony-benchmark
-// go build -o soldier ../aws-experiment-launch/experiment/soldier/main.go
-// ./soldier -ip=xx -port=xx
 func main() {
 	ip := flag.String("ip", "127.0.0.1", "IP of the node.")
 	port := flag.String("port", "9000", "port of the node.")

benchmark.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"math/rand"
 	"os"
+	"strconv"
 	"time"
 
 	"github.com/simple-rules/harmony-benchmark/attack"
@@ -12,8 +13,7 @@ import (
 	"github.com/simple-rules/harmony-benchmark/consensus"
 	"github.com/simple-rules/harmony-benchmark/log"
 	"github.com/simple-rules/harmony-benchmark/node"
-
-	"github.com/shirou/gopsutil/process"
+	"github.com/simple-rules/harmony-benchmark/utils"
 )
 
 const (
@@ -32,24 +32,10 @@ func attackDetermination(attackedMode int) bool {
 	return false
 }
 
-func logMemUsage(consensus *consensus.Consensus) {
-	p, _ := process.NewProcess(int32(os.Getpid()))
-	for {
-		info, _ := p.MemoryInfo()
-		memMap, _ := p.MemoryMaps(false)
-		log.Info("Mem Report", "info", info, "map", memMap)
-		time.Sleep(10 * time.Second)
-	}
-}
-
-// TODO: @ricl, start another process for reporting.
-func logCPUUsage(consensus *consensus.Consensus) {
-	p, _ := process.NewProcess(int32(os.Getpid()))
-	for {
-		percent, _ := p.CPUPercent()
-		times, _ := p.Times()
-		log.Info("CPU Report", "percent", percent, "times", times, "consensus", consensus)
-		time.Sleep(10 * time.Second)
+func startProfiler(shardID string, logFolder string) {
+	err := utils.RunCmd("./bin/profiler", "-pid", strconv.Itoa(os.Getpid()), "-shard_id", shardID, "-log_folder", logFolder)
+	if err != nil {
+		log.Error("Failed to start profiler")
 	}
 }
 
@@ -67,10 +53,11 @@ func main() {
 	// Attack determination.
 	attack.GetInstance().SetAttackEnabled(attackDetermination(*attackedMode))
 
-	config, _ := configr.ReadConfigFile(*configFile)
-	shardID := configr.GetShardID(*ip, *port, &config)
-	peers := configr.GetPeers(*ip, *port, shardID, &config)
-	leader := configr.GetLeader(shardID, &config)
+	configr := configr.NewConfigr()
+	configr.ReadConfigFile(*configFile)
+	shardID := configr.GetShardID(*ip, *port)
+	peers := configr.GetPeers(*ip, *port, shardID)
+	leader := configr.GetLeader(shardID)
 
 	var role string
 	if leader.Ip == *ip && leader.Port == *port {
@@ -90,16 +77,18 @@ func main() {
 
 	// Consensus object.
 	consensus := consensus.NewConsensus(*ip, *port, shardID, peers, leader)
-	// Logging for consensus.
-	go logMemUsage(consensus)
-	go logCPUUsage(consensus)
+
+	// Start Profiler for leader
+	if role == "leader" {
+		startProfiler(shardID, *logFolder)
+	}
 
 	// Set logger to attack model.
 	attack.GetInstance().SetLogger(consensus.Log)
 	// Current node.
 	currentNode := node.New(consensus)
 	// Create client peer.
-	clientPeer := configr.GetClientPeer(&config)
+	clientPeer := configr.GetClientPeer()
 	// If there is a client configured in the node list.
 	if clientPeer != nil {
 		currentNode.ClientPeer = clientPeer

client/btctxgen/main.go

@@ -176,8 +176,9 @@ func main() {
 	flag.Parse()
 
 	// Read the configs
-	config, _ := configr.ReadConfigFile(*configFile)
-	leaders, shardIDs := configr.GetLeadersAndShardIds(&config)
+	configr := configr.NewConfigr()
+	configr.ReadConfigFile(*configFile)
+	leaders, shardIDs := configr.GetLeadersAndShardIds()
 
 	// Do cross shard tx if there are more than one shard
 	setting.crossShard = len(shardIDs) > 1
@@ -203,7 +204,7 @@ func main() {
 	}
 
 	// Client/txgenerator server node setup
-	clientPort := configr.GetClientPort(&config)
+	clientPort := configr.GetClientPort()
 	consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{})
 	clientNode := node.New(consensusObj)
 
@@ -253,6 +254,6 @@ func main() {
 
 	// Send a stop message to stop the nodes at the end
 	msg := proto_node.ConstructStopMessage()
-	peers := append(configr.GetValidators(*configFile), leaders...)
+	peers := append(configr.GetValidators(), leaders...)
 	p2p.BroadcastMessage(peers, msg)
 }

client/txgen/main.go

@@ -254,8 +254,9 @@ func main() {
 	flag.Parse()
 
 	// Read the configs
-	config, _ := configr.ReadConfigFile(*configFile)
-	leaders, shardIds := configr.GetLeadersAndShardIds(&config)
+	configr := configr.NewConfigr()
+	configr.ReadConfigFile(*configFile)
+	leaders, shardIds := configr.GetLeadersAndShardIds()
 
 	setting.numOfAddress = 10000
 	// Do cross shard tx if there are more than one shard
@@ -282,7 +283,7 @@ func main() {
 	}
 
 	// Client/txgenerator server node setup
-	clientPort := configr.GetClientPort(&config)
+	clientPort := configr.GetClientPort()
 	consensusObj := consensus.NewConsensus("0", clientPort, "0", nil, p2p.Peer{})
 	clientNode := node.New(consensusObj)
 
@@ -359,6 +360,6 @@ func main() {
 
 	// Send a stop message to stop the nodes at the end
 	msg := proto_node.ConstructStopMessage()
-	peers := append(configr.GetValidators(*configFile), leaders...)
+	peers := append(configr.GetValidators(), leaders...)
 	p2p.BroadcastMessage(peers, msg)
 }

configr/main.go

@@ -13,125 +13,148 @@ import (
 	"github.com/simple-rules/harmony-benchmark/utils"
 )
 
+type ConfigEntry struct {
+	IP      string
+	Port    string
+	Role    string
+	ShardID string
+}
+
+type Configr struct {
+	config []ConfigEntry
+}
+
+func NewConfigr() *Configr {
+	configr := Configr{}
+	return &configr
+}
+
 // Gets all the validator peers
-func GetValidators(config string) []p2p.Peer {
-	file, _ := os.Open(config)
-	fscanner := bufio.NewScanner(file)
+func (configr *Configr) GetValidators() []p2p.Peer {
 	var peerList []p2p.Peer
-	for fscanner.Scan() {
-		p := strings.Split(fscanner.Text(), " ")
-		ip, port, status := p[0], p[1], p[2]
-		if status == "leader" || status == "client" {
+	for _, entry := range configr.config {
+		if entry.Role != "validator" {
 			continue
 		}
-		peer := p2p.Peer{Port: port, Ip: ip}
+		peer := p2p.Peer{Port: entry.Port, Ip: entry.IP}
 		peerList = append(peerList, peer)
 	}
 	return peerList
 }
 
 // Gets all the leader peers and corresponding shard Ids
-func GetLeadersAndShardIds(config *[][]string) ([]p2p.Peer, []uint32) {
+func (configr *Configr) GetLeadersAndShardIds() ([]p2p.Peer, []uint32) {
 	var peerList []p2p.Peer
-	var shardIds []uint32
-	for _, node := range *config {
-		ip, port, status, shardId := node[0], node[1], node[2], node[3]
-		if status == "leader" {
-			peerList = append(peerList, p2p.Peer{Ip: ip, Port: port})
-			val, err := strconv.Atoi(shardId)
+	var shardIDs []uint32
+	for _, entry := range configr.config {
+		if entry.Role == "leader" {
+			peerList = append(peerList, p2p.Peer{Ip: entry.IP, Port: entry.Port})
+			val, err := strconv.Atoi(entry.ShardID)
 			if err == nil {
-				shardIds = append(shardIds, uint32(val))
+				shardIDs = append(shardIDs, uint32(val))
 			} else {
-				log.Print("[Generator] Error parsing the shard Id ", shardId)
+				log.Print("[Generator] Error parsing the shard Id ", entry.ShardID)
 			}
 		}
 	}
-	return peerList, shardIds
+	return peerList, shardIDs
 }
 
-func GetClientPeer(config *[][]string) *p2p.Peer {
-	for _, node := range *config {
-		ip, port, status := node[0], node[1], node[2]
-		if status != "client" {
+func (configr *Configr) GetClientPeer() *p2p.Peer {
+	for _, entry := range configr.config {
+		if entry.Role != "client" {
 			continue
 		}
-		peer := p2p.Peer{Port: port, Ip: ip}
+		peer := p2p.Peer{Port: entry.Port, Ip: entry.IP}
 		return &peer
 	}
 	return nil
 }
 
 // Gets the port of the client node in the config
-func GetClientPort(config *[][]string) string {
-	for _, node := range *config {
-		_, port, status, _ := node[0], node[1], node[2], node[3]
-		if status == "client" {
-			return port
+func (configr *Configr) GetClientPort() string {
+	for _, entry := range configr.config {
+		if entry.Role == "client" {
+			return entry.Port
 		}
 	}
 	return ""
 }
 
+// Parse the config file and return a 2d array containing the file data
+func (configr *Configr) ReadConfigFile(filename string) error {
+	file, err := os.Open(filename)
+	defer file.Close()
+	if err != nil {
+		log.Fatal("Failed to read config file ", filename)
+		return err
+	}
+	fscanner := bufio.NewScanner(file)
+
+	result := []ConfigEntry{}
+	for fscanner.Scan() {
+		p := strings.Split(fscanner.Text(), " ")
+		entry := ConfigEntry{p[0], p[1], p[2], p[3]}
+		result = append(result, entry)
+	}
+	log.Println(result)
+	configr.config = result
+	return nil
+}
+
 // GetShardID Gets the shard id of the node corresponding to this ip and port
-func GetShardID(myIp, myPort string, config *[][]string) string {
-	for _, node := range *config {
-		ip, port, shardId := node[0], node[1], node[3]
-		if ip == myIp && port == myPort {
-			return shardId
+func (configr *Configr) GetShardID(ip, port string) string {
+	for _, entry := range configr.config {
+		if entry.IP == ip && entry.Port == port {
+			return entry.ShardID
 		}
 	}
 	return "N/A"
 }
 
 // GetPeers Gets the peer list of the node corresponding to this ip and port
-func GetPeers(myIp, myPort, myShardId string, config *[][]string) []p2p.Peer {
+func (configr *Configr) GetPeers(ip, port, shardID string) []p2p.Peer {
 	var peerList []p2p.Peer
-	for _, node := range *config {
-		ip, port, status, shardId := node[0], node[1], node[2], node[3]
-		if status != "validator" || ip == myIp && port == myPort || myShardId != shardId {
+	for _, entry := range configr.config {
+		if entry.Role != "validator" || entry.IP == ip && entry.Port == port || entry.ShardID != shardID {
 			continue
 		}
 		// Get public key deterministically based on ip and port
-		peer := p2p.Peer{Port: port, Ip: ip}
-		priKey := crypto.Ed25519Curve.Scalar().SetInt64(int64(utils.GetUniqueIdFromPeer(peer)))
-		peer.PubKey = pki.GetPublicKeyFromScalar(priKey)
+		peer := p2p.Peer{Port: entry.Port, Ip: entry.IP}
+		setKey(&peer)
 		peerList = append(peerList, peer)
 	}
 	return peerList
 }
 
 // GetLeader Gets the leader of this shard id
-func GetLeader(myShardId string, config *[][]string) p2p.Peer {
+func (configr *Configr) GetLeader(shardID string) p2p.Peer {
 	var leaderPeer p2p.Peer
-	for _, node := range *config {
-		ip, port, status, shardId := node[0], node[1], node[2], node[3]
-		if status == "leader" && myShardId == shardId {
-			leaderPeer.Ip = ip
-			leaderPeer.Port = port
-
-			// Get public key deterministically based on ip and port
-			priKey := crypto.Ed25519Curve.Scalar().SetInt64(int64(utils.GetUniqueIdFromPeer(leaderPeer))) // TODO: figure out why using a random hash value doesn't work for private key (schnorr)
-			leaderPeer.PubKey = pki.GetPublicKeyFromScalar(priKey)
+	for _, entry := range configr.config {
+		if entry.Role == "leader" && entry.ShardID == shardID {
+			leaderPeer.Ip = entry.IP
+			leaderPeer.Port = entry.Port
+			setKey(&leaderPeer)
 		}
 	}
 	return leaderPeer
 }
 
-// Parse the config file and return a 2d array containing the file data
-func ReadConfigFile(filename string) ([][]string, error) {
-	file, err := os.Open(filename)
-	defer file.Close()
-	if err != nil {
-		log.Fatal("Failed to read config file ", filename)
-		return nil, err
-	}
-	fscanner := bufio.NewScanner(file)
+func (configr *Configr) GetConfigEntries() []ConfigEntry {
+	return configr.config
+}
 
-	result := [][]string{}
-	for fscanner.Scan() {
-		p := strings.Split(fscanner.Text(), " ")
-		result = append(result, p)
+func (configr *Configr) GetMyConfigEntry(ip string, port string) *ConfigEntry {
+	for _, entry := range configr.config {
+		if entry.IP == ip && entry.Port == port {
+			return &entry
+		}
 	}
-	log.Println(result)
-	return result, nil
+	return nil
+}
+
+func setKey(peer *p2p.Peer) {
+	// Get public key deterministically based on ip and port
+	priKey := crypto.Ed25519Curve.Scalar().SetInt64(int64(utils.GetUniqueIdFromPeer(*peer))) // TODO: figure out why using a random hash value doesn't work for private key (schnorr)
+	peer.PubKey = pki.GetPublicKeyFromScalar(priKey)
 }

deploy.sh

@@ -8,6 +8,7 @@
 # Also it's recommended to use `go build` for testing the whole exe. 
 go build -o bin/benchmark
 go build -o bin/txgen client/txgen/main.go
+go build -o bin/profiler profiler/main.go
 
 # Create a tmp folder for logs
 t=`date +"%Y%m%d-%H%M%S"`

kill_node.sh

@@ -1,4 +1,4 @@
-for pid in `/bin/ps -fu $USER| grep "benchmark\|txgen\|soldier\|commander" | grep -v "grep" | awk '{print $2}'`;
+for pid in `/bin/ps -fu $USER| grep "benchmark\|txgen\|soldier\|commander\|profiler" | grep -v "grep" | awk '{print $2}'`;
 do
     echo 'Killed process: '$pid
     kill -9 $pid

profiler/main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"time"
+
+	"github.com/shirou/gopsutil/process"
+	"github.com/simple-rules/harmony-benchmark/log"
+)
+
+type profilerSetting struct {
+	pid     int32
+	shardID string
+}
+
+var (
+	setting profilerSetting
+)
+
+func logPerf() {
+	p, _ := process.NewProcess(setting.pid)
+	for {
+		// log mem usage
+		info, _ := p.MemoryInfo()
+		memMap, _ := p.MemoryMaps(false)
+		log.Info("Mem Report", "info", info, "map", memMap, "shardID", setting.shardID)
+
+		// log cpu usage
+		percent, _ := p.CPUPercent()
+		times, _ := p.Times()
+		log.Info("CPU Report", "percent", percent, "times", times, "shardID", setting.shardID)
+
+		time.Sleep(3 * time.Second)
+	}
+}
+
+func main() {
+	pid := flag.Int("pid", 0, "process id of the node")
+	shardID := flag.String("shard_id", "0", "the shard id of this node")
+	logFolder := flag.String("log_folder", "latest", "the folder collecting the logs of this execution")
+	flag.Parse()
+
+	setting.pid = int32(*pid)
+	setting.shardID = *shardID
+	logFileName := fmt.Sprintf("./%v/profiler-%v.log", *logFolder, *shardID)
+	h := log.MultiHandler(
+		log.StdoutHandler,
+		log.Must.FileHandler(logFileName, log.JSONFormat()), // Log to file
+		// log.Must.NetHandler("tcp", ":3000", log.JSONFormat()) // Log to remote
+	)
+	log.Root().SetHandler(h)
+
+	logPerf()
+}

run_experiment.sh

@@ -5,6 +5,7 @@ go build -o bin/benchmark
 go build -o bin/txgen client/txgen/main.go
 go build -o bin/commander aws-experiment-launch/experiment/commander/main.go
 go build -o bin/soldier aws-experiment-launch/experiment/soldier/main.go
+go build -o bin/profiler profiler/main.go
 cd bin
 
 # Create a tmp folder for logs

utils/utils.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"encoding/binary"
 	"log"
+	"os/exec"
 	"regexp"
 	"strconv"
 	"strings"
@@ -43,3 +44,22 @@ func GetUniqueIdFromPeer(peer p2p.Peer) uint16 {
 	value, _ := strconv.Atoi(socketId)
 	return uint16(value)
 }
+
+// RunCmd Runs command `name` with arguments `args`
+func RunCmd(name string, args ...string) error {
+	cmd := exec.Command(name, args...)
+	if err := cmd.Start(); err != nil {
+		log.Fatal(err)
+		return err
+	}
+
+	log.Println("Command running", name, args)
+	go func() {
+		if err := cmd.Wait(); err != nil {
+			log.Printf("Command finished with error: %v", err)
+		} else {
+			log.Printf("Command finished successfully")
+		}
+	}()
+	return nil
+}