p2p: measure packet throughput too, not just bandwidth

p2p/peer.go

@@ -304,6 +304,7 @@ func (p *Peer) handle(msg Msg) error {
 		if metrics.Enabled {
 			m := fmt.Sprintf("%s/%s/%d/%#02x", ingressMeterName, proto.Name, proto.Version, msg.Code-proto.offset)
 			metrics.GetOrRegisterMeter(m, nil).Mark(int64(msg.meterSize))
+			metrics.GetOrRegisterMeter(m+"/packets", nil).Mark(1)
 		}
 		select {
 		case proto.in <- msg:

p2p/rlpx.go

@@ -597,6 +597,7 @@ func (rw *rlpxFrameRW) WriteMsg(msg Msg) error {
 	if metrics.Enabled && msg.meterCap.Name != "" { // don't meter non-subprotocol messages
 		m := fmt.Sprintf("%s/%s/%d/%#02x", egressMeterName, msg.meterCap.Name, msg.meterCap.Version, msg.meterCode)
 		metrics.GetOrRegisterMeter(m, nil).Mark(int64(msg.meterSize))
+		metrics.GetOrRegisterMeter(m+"/packets", nil).Mark(1)
 	}
 	// write header
 	headbuf := make([]byte, 32)