From 97989d969c61e90ee4ef456e9d53511698a24874 Mon Sep 17 00:00:00 2001
From: HollyFang <hollyfan@foxmail.com>
Date: Tue, 14 May 2019 10:54:39 +0800
Subject: [PATCH] Don't update unless the datahas changed, otherwise there will
 be performance problems when the data is large

---
 ui/src/app/api/subscription.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ui/src/app/api/subscription.js b/ui/src/app/api/subscription.js
index 0927c5ce66..2e3affceba 100644
--- a/ui/src/app/api/subscription.js
+++ b/ui/src/app/api/subscription.js
@@ -674,6 +674,10 @@ export default class Subscription {
                 }
             }
         }
+        else if(angular.toJson(currentData.data)==angular.toJson(sourceData.data)){
+            update = false;
+        }
+
         if (update) {
             if (this.subscriptionTimewindow && this.subscriptionTimewindow.realtimeWindowMs) {
                 this.updateTimewindow();