diff --git a/BACKEND/app/services/line_connection.ts b/BACKEND/app/services/line_connection.ts
index c3d26c9..a67a649 100644
--- a/BACKEND/app/services/line_connection.ts
+++ b/BACKEND/app/services/line_connection.ts
@@ -130,6 +130,7 @@ export default class LineConnection {
   private outputPhysicalTest: string
   private outputLoadIosLicense: string | boolean
   private listDeviceIos: string[]
+  private debounceTimer: NodeJS.Timeout | null = null
 
   constructor(config: LineConfig, socketIO: any, handleClearLine: () => void) {
     this.config = config
@@ -159,6 +160,7 @@ export default class LineConnection {
     this.outputPhysicalTest = ''
     this.outputLoadIosLicense = ''
     this.listDeviceIos = []
+    this.debounceTimer = null
   }
   /**
    * Connect to line with socket
@@ -209,13 +211,18 @@ export default class LineConnection {
         }
         if (this.config.runningPhysical) {
           this.outputPhysicalTest += message
-          const ports = this.physicalTest.handleLog(message)
-          if (ports?.length)
-            this.socketIO.emit('test_port_physical', {
-              stationId,
-              lineId: id,
-              data: ports,
-            })
+          if (this.debounceTimer) clearTimeout(this.debounceTimer)
+
+          this.debounceTimer = setTimeout(() => {
+            this.flushLogBuffer()
+          }, 1000) // 1s debounce
+          // const ports = this.physicalTest.handleLog(message)
+          // if (ports?.length)
+          //   this.socketIO.emit('test_port_physical', {
+          //     stationId,
+          //     lineId: id,
+          //     data: ports,
+          //   })
         }
         if (data.toString().includes('More') || data.toString().includes('MORE'))
           this.writeCommand('   ')
@@ -1076,6 +1083,25 @@ export default class LineConnection {
     // }, 10000)
   }
 
+  flushLogBuffer() {
+    const lines = this.outputPhysicalTest.split(/\r?\n/)
+
+    // giữ lại dòng cuối nếu chưa kết thúc hoàn chỉnh
+    this.outputPhysicalTest = lines.pop() || ''
+
+    const completeLines = lines.join('\n')
+
+    if (completeLines.trim()) {
+      const ports = this.physicalTest.handleLog(completeLines)
+      if (ports?.length)
+        this.socketIO.emit('test_port_physical', {
+          stationId: this.config.stationId,
+          lineId: this.config.id,
+          data: ports,
+        })
+    }
+  }
+
   /**
    * End all testing
    */
diff --git a/BACKEND/app/services/physical_test_service.ts b/BACKEND/app/services/physical_test_service.ts
index d3c6546..4b66b83 100644
--- a/BACKEND/app/services/physical_test_service.ts
+++ b/BACKEND/app/services/physical_test_service.ts
@@ -74,14 +74,14 @@ export class PhysicalPortTest {
         markTested = true
       }
 
-      if (!iface) return
+      if (!iface) continue
 
       const port = this.ports.get(iface)
-      if (!port) return
+      if (!port) continue
 
       port.lastSeen = new Date()
 
-      if (state && port.lastState === state) return
+      if (state && port.lastState === state) continue
       if (state) port.lastState = state
 
       // ⭐ PASS nếu có ít nhất 1 event hợp lệ
diff --git a/FRONTEND/src/components/Modal/ModalTerminal.tsx b/FRONTEND/src/components/Modal/ModalTerminal.tsx
index b96de78..ddf7206 100644
--- a/FRONTEND/src/components/Modal/ModalTerminal.tsx
+++ b/FRONTEND/src/components/Modal/ModalTerminal.tsx
@@ -9,6 +9,7 @@ import {
   Menu,
   Modal,
   ScrollArea,
+  SimpleGrid,
   Tabs,
   Text,
   Textarea,
@@ -983,9 +984,9 @@ const ModalTerminal = ({
                     </Flex>
                   </legend>
                   <ScrollArea h={"50vh"} p={"4px"}>
-                    <Flex wrap={"wrap"} gap={"xs"}>
+                    <SimpleGrid cols={2} spacing="xs">
                       {line?.runningPhysical && line?.ports
-                        ? line?.ports?.map((port, i) => (
+                        ? line.ports.map((port, i) => (
                             <Text
                               fz={"14px"}
                               key={i}
@@ -998,8 +999,8 @@ const ModalTerminal = ({
                               {port}
                             </Text>
                           ))
-                        : ""}
-                    </Flex>
+                        : null}
+                    </SimpleGrid>
                   </ScrollArea>
                 </fieldset>
                 <Flex justify={"space-between"}>