further refinements/tuning

node/consensus/master/broadcast_messaging.go

@@ -92,16 +92,17 @@ func (e *MasterClockConsensusEngine) handleSelfTestReport(
 		info.DifficultyMetric = report.DifficultyMetric
 		info.MasterHeadFrame = report.MasterHeadFrame
 
-		if info.Bandwidth <= 1048576 {
+		if info.Bandwidth == 0 {
 			go func() {
 				ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Minute)
 				defer cancel()
 				ch := e.pubSub.GetMultiaddrOfPeerStream(ctx, peerID)
 				select {
 				case <-ch:
-					go func() {
-						e.bandwidthTestCh <- peerID
-					}()
+					select {
+					case e.bandwidthTestCh <- peerID:
+					default:
+					}
 				case <-ctx.Done():
 				}
 			}()
@@ -116,15 +117,16 @@ func (e *MasterClockConsensusEngine) handleSelfTestReport(
 		for i := 0; i < len(proofs); i++ {
 			proofs[i] = proof[i*516 : (i+1)*516]
 		}
-		go func() {
-			e.verifyTestCh <- verifyChallenge{
+		select {
+		case e.verifyTestCh <- verifyChallenge{
 			peerID:    peerID,
 			challenge: challenge,
 			cores:     report.Cores,
 			increment: report.Increment,
 			proof:     proof,
+		}:
+		default:
 		}
-		}()
 
 		return nil
 	}

node/consensus/master/master_clock_consensus_engine.go

@@ -146,7 +146,7 @@ func NewMasterClockConsensusEngine(
 		report:              report,
 		frameValidationCh:   make(chan *protobufs.ClockFrame),
 		bandwidthTestCh:     make(chan []byte),
-		verifyTestCh:        make(chan verifyChallenge, 120000),
+		verifyTestCh:        make(chan verifyChallenge, 4),
 		engineConfig:        engineConfig,
 	}
 
@@ -192,29 +192,14 @@ func (e *MasterClockConsensusEngine) Start() <-chan error {
 	go func() {
 		for {
 			select {
-			case newFrame := <-e.frameValidationCh:
-				head, err := e.masterTimeReel.Head()
-				if err != nil {
-					panic(err)
-				}
-
-				if head.FrameNumber > newFrame.FrameNumber ||
-					newFrame.FrameNumber-head.FrameNumber > 128 {
-					e.logger.Debug(
-						"frame out of range, ignoring",
-						zap.Uint64("number", newFrame.FrameNumber),
-					)
-					continue
-				}
-
-				if err := e.frameProver.VerifyMasterClockFrame(newFrame); err != nil {
-					e.logger.Error("could not verify clock frame", zap.Error(err))
-					continue
-				}
-
-				e.masterTimeReel.Insert(newFrame, false)
 			case peerId := <-e.bandwidthTestCh:
 				e.performBandwidthTest(peerId)
+			}
+		}
+	}()
+	go func() {
+		for {
+			select {
 			case verifyTest := <-e.verifyTestCh:
 				e.performVerifyTest(verifyTest)
 			}
@@ -398,12 +383,11 @@ func (e *MasterClockConsensusEngine) Start() <-chan error {
 						panic(err)
 					}
 
+					if increment%30 == 0 {
 						e.logger.Info(
 							"broadcasting self-test info",
 							zap.Uint64("current_frame", e.report.MasterHeadFrame),
 						)
-
-					if increment%30 == 0 {
 						if err := e.publishMessage(e.filter, e.report); err != nil {
 							e.logger.Debug("error publishing message", zap.Error(err))
 						}

node/main.go

@@ -227,7 +227,7 @@ func main() {
 		fmt.Println("Signature check disabled, skipping...")
 	}
 
-	if *memprofile != "" {
+	if *memprofile != "" && *core == 0 {
 		go func() {
 			for {
 				time.Sleep(5 * time.Minute)
@@ -241,7 +241,7 @@ func main() {
 		}()
 	}
 
-	if *cpuprofile != "" {
+	if *cpuprofile != "" && *core == 0 {
 		f, err := os.Create(*cpuprofile)
 		if err != nil {
 			log.Fatal(err)