diff --git a/src/views/perfManage/overview/index.vue b/src/views/perfManage/overview/index.vue
index 9499477f..0f764360 100644
--- a/src/views/perfManage/overview/index.vue
+++ b/src/views/perfManage/overview/index.vue
@@ -283,7 +283,7 @@ function updateActiveCallsChart() {
       yAxis: { type: 'value', show: false },
       series: [{
         data: defaultData,
-        type: 'line', smooth: true, symbol: 'none',
+        type: 'line',  symbol: 'none',
         lineStyle: { width: 2, color: '#d9d9d9' }, // 灰色线条表示无数据
         areaStyle: { color: 'rgba(217,217,217,0.1)' } // 淡灰色填充
       }]
@@ -297,8 +297,8 @@ function updateActiveCallsChart() {
   }
 
   // 限制数据点数量
-  if (chartData.length > 10) {
-    chartData.splice(0, chartData.length - 10)
+  if (chartData.length > 50) {
+    chartData.splice(0, chartData.length - 50)
   }
 
   // 生成时间轴数据
@@ -310,7 +310,7 @@ function updateActiveCallsChart() {
     yAxis: { type: 'value', show: false },
     series: [{
       data: chartData,
-      type: 'line', smooth: true, symbol: 'none',
+      type: 'line',  symbol: 'none',
       lineStyle: { width: 2, color: '#1890ff' }, // 蓝色线条表示有数据
       areaStyle: { color: 'rgba(24,144,255,0.1)' } // 淡蓝色填充
     }]
@@ -347,7 +347,7 @@ function updateFailedCallsChart() {
       yAxis: { type: 'value', show: false },
       series: [{
         data: defaultData,
-        type: 'line', smooth: true, symbol: 'none',
+        type: 'line',  symbol: 'none',
         lineStyle: { width: 2, color: '#d9d9d9' }, // 灰色线条表示无数据
         areaStyle: { color: 'rgba(217,217,217,0.1)' } // 淡灰色填充
       }]
@@ -361,8 +361,8 @@ function updateFailedCallsChart() {
   }
 
   // 限制数据点数量
-  if (chartData.length > 10) {
-    chartData.splice(0, chartData.length - 10)
+  if (chartData.length > 50) {
+    chartData.splice(0, chartData.length - 50)
   }
 
   // 生成时间轴数据
@@ -374,7 +374,7 @@ function updateFailedCallsChart() {
     yAxis: { type: 'value', show: false },
     series: [{
       data: chartData,
-      type: 'line', smooth: true, symbol: 'none',
+      type: 'line',  symbol: 'none',
       lineStyle: { width: 2, color: '#faad14' }, // 橙色线条表示failed calls
       areaStyle: { color: 'rgba(250,173,20,0.1)' } // 淡橙色填充
     }]
@@ -409,7 +409,7 @@ function updateActiveRegistrationsChart() {
       yAxis: { type: 'value', show: false },
       series: [{
         data: defaultData,
-        type: 'line', smooth: true, symbol: 'none',
+        type: 'line',  symbol: 'none',
         lineStyle: { width: 2, color: '#d9d9d9' }, // 灰色线条表示无数据
         areaStyle: { color: 'rgba(217,217,217,0.1)' } // 淡灰色填充
       }]
@@ -423,8 +423,8 @@ function updateActiveRegistrationsChart() {
   }
 
   // 限制数据点数量
-  if (chartData.length > 10) {
-    chartData.splice(0, chartData.length - 10)
+  if (chartData.length > 50) {
+    chartData.splice(0, chartData.length - 50)
   }
 
   // 生成时间轴数据
@@ -436,7 +436,7 @@ function updateActiveRegistrationsChart() {
     yAxis: { type: 'value', show: false },
     series: [{
       data: chartData,
-      type: 'line', smooth: true, symbol: 'none',
+      type: 'line',  symbol: 'none',
       lineStyle: { width: 2, color: '#1890ff' }, // 蓝色线条表示active registrations
       areaStyle: { color: 'rgba(24,144,255,0.1)' } // 淡蓝色填充
     }]
@@ -473,7 +473,7 @@ function updateFailedRegistrationsChart() {
       yAxis: { type: 'value', show: false },
       series: [{
         data: defaultData,
-        type: 'line', smooth: true, symbol: 'none',
+        type: 'line',  symbol: 'none',
         lineStyle: { width: 2, color: '#d9d9d9' }, // 灰色线条表示无数据
         areaStyle: { color: 'rgba(217,217,217,0.1)' } // 淡灰色填充
       }]
@@ -487,8 +487,8 @@ function updateFailedRegistrationsChart() {
   }
 
   // 限制数据点数量
-  if (chartData.length > 10) {
-    chartData.splice(0, chartData.length - 10)
+  if (chartData.length > 50) {
+    chartData.splice(0, chartData.length - 50)
   }
 
   // 生成时间轴数据
@@ -500,7 +500,7 @@ function updateFailedRegistrationsChart() {
     yAxis: { type: 'value', show: false },
     series: [{
       data: chartData,
-      type: 'line', smooth: true, symbol: 'none',
+      type: 'line',  symbol: 'none',
       lineStyle: { width: 2, color: '#f5222d' }, // 红色线条表示failed registrations
       areaStyle: { color: 'rgba(245,34,45,0.1)' } // 淡红色填充
     }]
@@ -577,7 +577,7 @@ onMounted(() => {
     yAxis: { type: 'value', show: false },
     series: [{
       data: [0, 0, 0, 0, 0], // 默认显示0值
-      type: 'line', smooth: true, symbol: 'none',
+      type: 'line',  symbol: 'none',
       lineStyle: { width: 2, color: '#d9d9d9' }, // 灰色线条表示无数据
       areaStyle: { color: 'rgba(217,217,217,0.1)' } // 淡灰色填充
     }]
@@ -598,7 +598,7 @@ onMounted(() => {
       yAxis: { type: 'value', show: false },
       series: [{
         data: [4.62, 4.50, 4.40, 4.35, 4.30],
-        type: 'line', smooth: true, symbol: 'none',
+        type: 'line',  symbol: 'none',
         lineStyle: { width: 2, color: '#52c41a' },
         areaStyle: { color: 'rgba(82,196,26,0.1)' }
       }]
@@ -662,13 +662,13 @@ function calculateMTValue() {
 
 // 计算MO变化值（完善版本）
 function calculateMOChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0.00% last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0.00% last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -677,13 +677,13 @@ function calculateMOChange() {
   const previousMO = calculateMOValueFromData(previousKpi)
 
   // 检查MO是否有有效值
-  if (latestMO === '-' || previousMO === '-') return '±0.00% last 5s'
+  if (latestMO === '-' || previousMO === '-') return '±0.00% last 1m'
 
   // 计算变化幅度
   const change = latestMO - previousMO
 
   // 检查是否有变化
-  if (change === 0) return '±0.00% last 5s'
+  if (change === 0) return '±0.00% last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(2)}%` : `${change.toFixed(2)}%`
 
@@ -695,13 +695,13 @@ function calculateMOChange() {
 
 // 计算MT变化值（完善版本）
 function calculateMTChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0.00% last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0.00% last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -710,13 +710,13 @@ function calculateMTChange() {
   const previousMT = calculateMTValueFromData(previousKpi)
 
   // 检查MT是否有有效值
-  if (latestMT === '-' || previousMT === '-') return '±0.00% last 5s'
+  if (latestMT === '-' || previousMT === '-') return '±0.00% last 1m'
 
   // 计算变化幅度
   const change = latestMT - previousMT
 
   // 检查是否有变化
-  if (change === 0) return '±0.00% last 5s'
+  if (change === 0) return '±0.00% last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(2)}%` : `${change.toFixed(2)}%`
 
@@ -783,13 +783,13 @@ function calculateRegSuccessValue() {
 
 // 计算registration success变化值
 function calculateRegSuccessChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0.00% last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0.00% last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0.00% last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -798,13 +798,13 @@ function calculateRegSuccessChange() {
   const previousRegSuccess = calculateRegSuccessValueFromData(previousKpi)
 
   // 检查registration success是否有有效值
-  if (latestRegSuccess === '-' || previousRegSuccess === '-') return '±0.00% last 5s'
+  if (latestRegSuccess === '-' || previousRegSuccess === '-') return '±0.00% last 1m'
 
   // 计算变化幅度
   const change = latestRegSuccess - previousRegSuccess
 
   // 检查是否有变化
-  if (change === 0) return '±0.00% last 5s'
+  if (change === 0) return '±0.00% last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(2)}%` : `${change.toFixed(2)}%`
 
@@ -858,13 +858,13 @@ function calculateActiveCallsArrow() {
 
 // 计算active calls变化值
 function calculateActiveCallsChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0 last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0 last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0 last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0 last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -873,13 +873,13 @@ function calculateActiveCallsChange() {
   const previousActiveCalls = Number(previousKpi['SCSCF.07']) || 0
 
   // 检查active calls是否有有效值
-  if (latestActiveCalls === 0 || previousActiveCalls === 0) return '±0 last 5s'
+  if (latestActiveCalls === 0 || previousActiveCalls === 0) return '±0 last 1m'
 
   // 计算变化幅度
   const change = latestActiveCalls - previousActiveCalls
 
   // 检查是否有变化
-  if (change === 0) return '±0 last 5s'
+  if (change === 0) return '±0 last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(0)}` : `${change.toFixed(0)}`
 
@@ -925,13 +925,13 @@ function calculateFailedCallsArrow() {
 
 // 计算failed calls变化值
 function calculateFailedCallsChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0 last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0 last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0 last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0 last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -948,7 +948,7 @@ function calculateFailedCallsChange() {
   const change = latestFailedCalls - previousFailedCalls
 
   // 检查是否有变化
-  if (change === 0) return '±0 last 5s'
+  if (change === 0) return '±0 last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(0)}` : `${change.toFixed(0)}`
 
@@ -995,13 +995,13 @@ function calculateActiveRegistrationsArrow() {
 
 // 计算active registrations变化值
 function calculateActiveRegistrationsChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0 last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0 last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0 last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0 last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -1010,13 +1010,13 @@ function calculateActiveRegistrationsChange() {
   const previousActiveRegistrations = Number(previousKpi['SCSCF.03']) || 0
 
   // 检查active registrations是否有有效值
-  if (latestActiveRegistrations === 0 || previousActiveRegistrations === 0) return '±0 last 5s'
+  if (latestActiveRegistrations === 0 || previousActiveRegistrations === 0) return '±0 last 1m'
 
   // 计算变化幅度
   const change = latestActiveRegistrations - previousActiveRegistrations
 
   // 检查是否有变化
-  if (change === 0) return '±0 last 5s'
+  if (change === 0) return '±0 last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(0)}` : `${change.toFixed(0)}`
 
@@ -1062,13 +1062,13 @@ function calculateFailedRegistrationsArrow() {
 
 // 计算failed registrations变化值
 function calculateFailedRegistrationsChange() {
-  if (imsRealtimeRawData.value.length < 2) return '±0 last 5s'
+  if (imsRealtimeRawData.value.length < 2) return '±0 last 1m'
 
   // 获取最新和上一个数据点
   const latestData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 1]
   const previousData = imsRealtimeRawData.value[imsRealtimeRawData.value.length - 2]
 
-  if (!latestData?.data || !previousData?.data) return '±0 last 5s'
+  if (!latestData?.data || !previousData?.data) return '±0 last 1m'
 
   const latestKpi = latestData.data
   const previousKpi = previousData.data
@@ -1085,7 +1085,7 @@ function calculateFailedRegistrationsChange() {
   const change = latestFailedRegistrations - previousFailedRegistrations
 
   // 检查是否有变化
-  if (change === 0) return '±0 last 5s'
+  if (change === 0) return '±0 last 1m'
 
   const changeText = change > 0 ? `+${change.toFixed(0)}` : `${change.toFixed(0)}`