instrumented node registration and made only 4 paralelell node registrations

cmix/nodes/request.go

@@ -9,6 +9,7 @@ package nodes
 
 import (
 	"io"
+	"time"
 
 	"github.com/golang/protobuf/proto"
 	"github.com/pkg/errors"
@@ -41,6 +42,7 @@ func requestKey(sender gateway.Sender, comms RegisterNodeCommsInterface,
 	// Generate a Diffie-Hellman keypair
 	grp := r.session.GetCmixGroup()
 
+	start := time.Now()
 	prime := grp.GetPBytes()
 	keyLen := len(prime)
 	dhPrivBytes, err := csprng.GenerateInGroup(prime, keyLen, rng)
@@ -66,8 +68,9 @@ func requestKey(sender gateway.Sender, comms RegisterNodeCommsInterface,
 
 	// Request nonce message from gateway
 	jww.INFO.Printf("Register: Requesting client key from "+
-		"gateway %s", gatewayID)
+		"gateway %s, setup took ", gatewayID, time.Since(start))
 
+	start = time.Now()
 	result, err := sender.SendToAny(func(host *connect.Host) (interface{}, error) {
 		keyResponse, err2 := comms.SendRequestClientKeyMessage(host, signedKeyReq)
 		if err2 != nil {
@@ -81,6 +84,7 @@ func requestKey(sender gateway.Sender, comms RegisterNodeCommsInterface,
 
 		return keyResponse, nil
 	}, stop)
+	jww.INFO.Printf("reg request took %s", time.Since(start))
 
 	if err != nil {
 		return nil, nil, 0, err
@@ -188,11 +192,14 @@ func processRequestResponse(signedKeyResponse *pb.SignedKeyResponse,
 	// Convert Node DH Public key to a cyclic.Int
 	nodeDHPub := grp.NewIntFromBytes(keyResponse.NodeDHPubKey)
 
+	start := time.Now()
 	// Construct the session key
 	h.Reset()
 	sessionKey := registration.GenerateBaseKey(grp,
 		nodeDHPub, dhPrivKey, h)
 
+	jww.INFO.Printf("DH for reg took %s", time.Since(start))
+
 	// Verify the HMAC
 	if !registration.VerifyClientHMAC(sessionKey.Bytes(),
 		keyResponse.EncryptedClientKey, opts.Hash.New,

cmix/params.go

@@ -99,7 +99,7 @@ func GetDefaultParams() Params {
 		MaxCheckedRounds:          500,
 		RegNodesBufferLen:         1000,
 		NetworkHealthTimeout:      15 * time.Second,
-		ParallelNodeRegistrations: 20,
+		ParallelNodeRegistrations: 4,
 		KnownRoundsThreshold:      1500, // 5 rounds/sec * 60 sec/min * 5 min
 		FastPolling:               true,
 		VerboseRoundTracking:      false,