diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayTestService.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayTestService.kt
index 713a7f9d..ec7d5602 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayTestService.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayTestService.kt
@@ -6,7 +6,7 @@ import android.os.IBinder
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.AppConfig.MSG_MEASURE_CONFIG
 import com.v2ray.ang.AppConfig.MSG_MEASURE_CONFIG_CANCEL
-import com.v2ray.ang.extension.serializable
+import com.v2ray.ang.handler.MmkvManager
 import com.v2ray.ang.handler.V2RayNativeManager
 import com.v2ray.ang.util.MessageUtil
 import java.util.Collections
@@ -54,8 +54,14 @@ class V2RayTestService : Service() {
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         when (intent?.getIntExtra("key", 0)) {
             MSG_MEASURE_CONFIG -> {
-                val guidsList = intent.serializable<ArrayList<String>>("content")
-                if (guidsList != null && guidsList.isNotEmpty()) {
+                val subscriptionId = intent.getStringExtra("content").orEmpty()
+                val guidsList = if (subscriptionId.isEmpty()) {
+                    MmkvManager.decodeAllServerList()
+                } else {
+                    MmkvManager.decodeServerList(subscriptionId)
+                }
+
+                if (guidsList.isNotEmpty()) {
                     lateinit var worker: RealPingWorkerService
                     worker = RealPingWorkerService(this, guidsList) { status ->
                         // notify UI and remove the worker from active list when finished
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/viewmodel/MainViewModel.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/viewmodel/MainViewModel.kt
index 25c4b644..8d863612 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/viewmodel/MainViewModel.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/viewmodel/MainViewModel.kt
@@ -240,13 +240,11 @@ class MainViewModel(application: Application) : AndroidViewModel(application) {
         MmkvManager.clearAllTestDelayResults(serversCache.map { it.guid }.toList())
         updateListAction.value = -1
 
-        val serversCopy = serversCache.toList()
         viewModelScope.launch(Dispatchers.Default) {
-            val guids = ArrayList<String>(serversCopy.map { it.guid })
-            if (guids.isEmpty()) {
+            if (serversCache.isEmpty()) {
                 return@launch
             }
-            MessageUtil.sendMsg2TestService(getApplication(), AppConfig.MSG_MEASURE_CONFIG, guids)
+            MessageUtil.sendMsg2TestService(getApplication(), AppConfig.MSG_MEASURE_CONFIG, subscriptionId)
         }
     }