diff --git a/cmd/edge-node/main.go b/cmd/edge-node/main.go
index a2e525b..a3b4f25 100644
--- a/cmd/edge-node/main.go
+++ b/cmd/edge-node/main.go
@@ -228,11 +228,18 @@ func main() {
 	})
 	app.On("gc", func() {
 		var sock = gosock.NewTmpSock(teaconst.ProcessName)
-		_, err := sock.Send(&gosock.Command{Code: "gc"})
+		reply, err := sock.Send(&gosock.Command{Code: "gc"})
 		if err != nil {
 			fmt.Println("[ERROR]" + err.Error())
 		} else {
-			fmt.Println("ok")
+			if reply == nil {
+				fmt.Println("ok")
+			} else {
+				var paramMap = maps.NewMap(reply.Params)
+				var pauseMS = paramMap.GetFloat64("pauseMS")
+				var costMS = paramMap.GetFloat64("costMS")
+				fmt.Printf("ok, cost: %.4fms, pause: %.4fms", costMS, pauseMS)
+			}
 		}
 	})
 	app.On("ip.drop", func() {
diff --git a/internal/nodes/node.go b/internal/nodes/node.go
index 0955657..734c200 100644
--- a/internal/nodes/node.go
+++ b/internal/nodes/node.go
@@ -777,9 +777,19 @@ func (this *Node) listenSock() error {
 					_ = cmd.ReplyOk()
 				}
 			case "gc":
+				var before = time.Now()
 				runtime.GC()
 				debug.FreeOSMemory()
-				_ = cmd.ReplyOk()
+
+				var costSeconds = time.Since(before).Seconds()
+				var gcStats = &debug.GCStats{}
+				debug.ReadGCStats(gcStats)
+				_ = cmd.Reply(&gosock.Command{
+					Params: map[string]any{
+						"pauseMS": gcStats.PauseTotal.Seconds() * 1000,
+						"costMS":  costSeconds * 1000,
+					},
+				})
 			case "reload":
 				err := this.syncConfig(0)
 				if err != nil {