From 5ab850935304a5b31bdea3ddfa161a7bea109bda Mon Sep 17 00:00:00 2001
From: yufansong <yufan@risingwave-labs.com>
Date: Thu, 22 Feb 2024 12:52:07 -0800
Subject: [PATCH] reduce useless call

---
 dashboard/pages/fragment_graph.tsx | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/dashboard/pages/fragment_graph.tsx b/dashboard/pages/fragment_graph.tsx
index f7b3764a6bf4a..bcc7f8cf725f6 100644
--- a/dashboard/pages/fragment_graph.tsx
+++ b/dashboard/pages/fragment_graph.tsx
@@ -253,18 +253,19 @@ export default function Streaming() {
   const toast = useErrorToast()
 
   useEffect(() => {
-    const interval = setInterval(() => {
-      const fetchNewBP = async () => {
-        const newBP = await getBackPressureWithoutPrometheus()
-        setPreviousBP(currentBP)
-        setCurrentBP(newBP)
-      }
-
-      fetchNewBP().catch(console.error)
-    }, INTERVAL)
+    if (backPressureDataSourceAlgo === "Embedded") {
+      const interval = setInterval(() => {
+        const fetchNewBP = async () => {
+          const newBP = await getBackPressureWithoutPrometheus()
+          setPreviousBP(currentBP)
+          setCurrentBP(newBP)
+        }
 
-    return () => clearInterval(interval)
-  }, [currentBP])
+        fetchNewBP().catch(console.error)
+      }, INTERVAL)
+      return () => clearInterval(interval)
+    }
+  }, [currentBP, backPressureDataSourceAlgo])
 
   useEffect(() => {
     if (currentBP !== null && previousBP !== null) {