diff --git a/cmd/tx.go b/cmd/tx.go
index fcc71245..bb038f21 100644
--- a/cmd/tx.go
+++ b/cmd/tx.go
@@ -234,8 +234,8 @@ func relayMsgsCmd(ctx *config.Context) *cobra.Command {
 
 			msgs := core.NewRelayMsgs()
 
-			doExecuteRelaySrc := len(sp.Src) > 0
-			doExecuteRelayDst := len(sp.Dst) > 0
+			doExecuteRelaySrc := len(sp.Dst) > 0
+			doExecuteRelayDst := len(sp.Src) > 0
 			doExecuteAckSrc := false
 			doExecuteAckDst := false
 
@@ -302,8 +302,8 @@ func relayAcksCmd(ctx *config.Context) *cobra.Command {
 
 			doExecuteRelaySrc := false
 			doExecuteRelayDst := false
-			doExecuteAckSrc := len(sp.Src) > 0
-			doExecuteAckDst := len(sp.Dst) > 0
+			doExecuteAckSrc := len(sp.Dst) > 0
+			doExecuteAckDst := len(sp.Src) > 0
 
 			if m, err := st.UpdateClients(c[src], c[dst], doExecuteRelaySrc, doExecuteRelayDst, doExecuteAckSrc, doExecuteAckDst, sh, viper.GetBool(flagDoRefresh)); err != nil {
 				return err
diff --git a/core/service.go b/core/service.go
index 93e68b9b..a10ff07b 100644
--- a/core/service.go
+++ b/core/service.go
@@ -158,18 +158,18 @@ func (srv *RelayService) Serve(ctx context.Context) error {
 	msgs := NewRelayMsgs()
 
 	// reset watch start time for packets
-	if len(pseqs.Src) > 0 {
+	if len(pseqs.Dst) > 0 {
 		resetWatchStartTime(&srv.optimizeRelay.srcRelayPacketStartTime)
 	}
-	if len(pseqs.Dst) > 0 {
+	if len(pseqs.Src) > 0 {
 		resetWatchStartTime(&srv.optimizeRelay.dstRelayPacketStartTime)
 	}
 
 	// reset watch start time for acks
-	if len(aseqs.Src) > 0 {
+	if len(aseqs.Dst) > 0 {
 		resetWatchStartTime(&srv.optimizeRelay.srcRelayAckStartTime)
 	}
-	if len(aseqs.Dst) > 0 {
+	if len(aseqs.Src) > 0 {
 		resetWatchStartTime(&srv.optimizeRelay.dstRelayAckStartTime)
 	}
 
@@ -224,8 +224,8 @@ func (srv *RelayService) shouldExecuteRelay(seqs *RelayPackets, srcRelayStartTim
 	dstRelay := false
 
 	// packet count
-	srcRelayCount := len(seqs.Src)
-	dstRelayCount := len(seqs.Dst)
+	srcRelayCount := len(seqs.Dst)
+	dstRelayCount := len(seqs.Src)
 	if int64(srcRelayCount) >= srv.optimizeRelay.srcOptimizeCount {
 		srcRelay = true
 	}
diff --git a/tests/cases/tm2tm/scripts/test-service b/tests/cases/tm2tm/scripts/test-service
index 21aa3910..8c9a5316 100755
--- a/tests/cases/tm2tm/scripts/test-service
+++ b/tests/cases/tm2tm/scripts/test-service
@@ -92,7 +92,10 @@ if [ $unrelayed_packets -ne 2 ]; then
     exit 1
 fi
 
-sleep 17 # wait for relay-interval
+sleep 7 # wait for relay-interval
+echo "xxxxxxx relay service -> skip xxxxxx"
+
+sleep 10 # wait for relay-interval
 echo "xxxxxxx relay service -> exec - time xxxxxx"
 
 # transfer a token x 3
@@ -109,7 +112,7 @@ if [ $unrelayed_packets -ne 3 ]; then
     exit 1
 fi
 
-sleep 20 # wait for relay-interval
+sleep 7 # wait for relay-interval
 echo "xxxxxxx relay service -> exec - count xxxxxx"
 
 # wait for relay service to execute
diff --git a/tests/cases/tmmock2tmmock/scripts/test-service b/tests/cases/tmmock2tmmock/scripts/test-service
index 21aa3910..8c9a5316 100755
--- a/tests/cases/tmmock2tmmock/scripts/test-service
+++ b/tests/cases/tmmock2tmmock/scripts/test-service
@@ -92,7 +92,10 @@ if [ $unrelayed_packets -ne 2 ]; then
     exit 1
 fi
 
-sleep 17 # wait for relay-interval
+sleep 7 # wait for relay-interval
+echo "xxxxxxx relay service -> skip xxxxxx"
+
+sleep 10 # wait for relay-interval
 echo "xxxxxxx relay service -> exec - time xxxxxx"
 
 # transfer a token x 3
@@ -109,7 +112,7 @@ if [ $unrelayed_packets -ne 3 ]; then
     exit 1
 fi
 
-sleep 20 # wait for relay-interval
+sleep 7 # wait for relay-interval
 echo "xxxxxxx relay service -> exec - count xxxxxx"
 
 # wait for relay service to execute