diff --git a/lib/data/model/server/cpu_status.dart b/lib/data/model/server/cpu_status.dart
index 1fdf1b69..297923c6 100644
--- a/lib/data/model/server/cpu_status.dart
+++ b/lib/data/model/server/cpu_status.dart
@@ -102,13 +102,11 @@ final cpuTempReg = RegExp(r'(x86_pkg_temp|cpu_thermal)');
 String parseCPUTemp(String type, String value) {
   const noMatch = "/sys/class/thermal/thermal_zone*/type";
   // Not support to get CPU temperature
-  if (value.contains(noMatch) ||
-      type.contains(noMatch) ||
-      value.isEmpty ||
-      type.isEmpty) {
+  if (type.contains(noMatch) || value.isEmpty || type.isEmpty) {
     return '';
   }
   final split = type.split('\n');
+  // if no match, use idx 0
   int idx = 0;
   for (var item in split) {
     if (item.contains(cpuTempReg)) {
diff --git a/lib/data/model/server/memory.dart b/lib/data/model/server/memory.dart
index b6000760..9f8b4aaf 100644
--- a/lib/data/model/server/memory.dart
+++ b/lib/data/model/server/memory.dart
@@ -1,16 +1,24 @@
 class Memory {
   int total;
-  int used;
   int free;
   int cache;
   int avail;
+
   Memory({
     required this.total,
-    required this.used,
     required this.free,
     required this.cache,
     required this.avail,
   });
+
+  double get availPercent {
+    if (avail == 0) {
+      return free / total;
+    }
+    return avail / total;
+  }
+
+  double get usedPercent => 1 - availPercent;
 }
 
 final memItemReg = RegExp(r'([A-Z].+:)\s+([0-9]+) kB');
@@ -18,22 +26,49 @@ final memItemReg = RegExp(r'([A-Z].+:)\s+([0-9]+) kB');
 Memory parseMem(String raw) {
   final items = raw.split('\n').map((e) => memItemReg.firstMatch(e)).toList();
 
-  final total = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'MemTotal:')?.group(2) ?? '1',
-  );
-  final free = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'MemFree:')?.group(2) ?? '0',
-  );
-  final cached = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'Cached:')?.group(2) ?? '0',
-  );
-  final available = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'MemAvailable:')?.group(2) ?? '0',
-  );
+  final total = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'MemTotal:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '1',
+      ) ??
+      1;
+  final free = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'MemFree:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '0',
+      ) ??
+      0;
+  final cached = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'Cached:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '0',
+      ) ??
+      0;
+  final available = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'MemAvailable:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '0',
+      ) ??
+      0;
 
   return Memory(
     total: total,
-    used: total - available,
     free: free,
     cache: cached,
     avail: available,
@@ -42,39 +77,61 @@ Memory parseMem(String raw) {
 
 class Swap {
   final int total;
-  final int used;
   final int free;
   final int cached;
 
   Swap({
     required this.total,
-    required this.used,
     required this.free,
     required this.cached,
   });
 
+  double get usedPercent => 1 - free / total;
+
+  double get freePercent => free / total;
+
   @override
   String toString() {
-    return 'Swap{total: $total, used: $used, free: $free, cached: $cached}';
+    return 'Swap{total: $total, free: $free, cached: $cached}';
   }
 }
 
 Swap parseSwap(String raw) {
   final items = raw.split('\n').map((e) => memItemReg.firstMatch(e)).toList();
 
-  final total = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'SwapTotal:')?.group(2) ?? '1',
-  );
-  final free = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'SwapFree:')?.group(2) ?? '0',
-  );
-  final cached = int.parse(
-    items.firstWhere((e) => e?.group(1) == 'SwapCached:')?.group(2) ?? '0',
-  );
+  final total = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'SwapTotal:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '1',
+      ) ??
+      1;
+  final free = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'SwapFree:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '1',
+      ) ??
+      1;
+  final cached = int.tryParse(
+        items
+                .firstWhere(
+                  (e) => e?.group(1) == 'SwapCached:',
+                  orElse: () => null,
+                )
+                ?.group(2) ??
+            '0',
+      ) ??
+      0;
 
   return Swap(
     total: total,
-    used: total - free,
     free: free,
     cached: cached,
   );
diff --git a/lib/data/provider/pkg.dart b/lib/data/provider/pkg.dart
index facb08ec..c48d08c8 100644
--- a/lib/data/provider/pkg.dart
+++ b/lib/data/provider/pkg.dart
@@ -59,9 +59,11 @@ class PkgProvider extends BusyProvider {
 
   Future<void> refresh() async {
     final result = await _update();
-    _parse(result);
-    try {} catch (e) {
+    try {
+      _parse(result);
+    } catch (e) {
       error = '[Server Raw]:\n$result\n[App Error]:\n$e';
+      rethrow;
     } finally {
       notifyListeners();
     }
diff --git a/lib/data/res/build_data.dart b/lib/data/res/build_data.dart
index f813e0b2..a639f436 100644
--- a/lib/data/res/build_data.dart
+++ b/lib/data/res/build_data.dart
@@ -4,6 +4,6 @@ class BuildData {
   static const String name = "ServerBox";
   static const int build = 293;
   static const String engine = "3.7.11";
-  static const String buildAt = "2023-05-09 19:48:09.523377";
-  static const int modifications = 4;
+  static const String buildAt = "2023-05-10 12:26:52.686";
+  static const int modifications = 11;
 }
diff --git a/lib/data/res/status.dart b/lib/data/res/status.dart
index 8cd934b0..2fffcf39 100644
--- a/lib/data/res/status.dart
+++ b/lib/data/res/status.dart
@@ -7,7 +7,6 @@ import '../model/server/conn_status.dart';
 
 Memory get _initMemory => Memory(
       total: 1,
-      used: 0,
       free: 1,
       cache: 0,
       avail: 1,
@@ -39,7 +38,6 @@ NetSpeed get initNetSpeed => NetSpeed(
     );
 Swap get _initSwap => Swap(
       total: 1,
-      used: 0,
       free: 1,
       cached: 0,
     );
diff --git a/lib/data/store/setting.dart b/lib/data/store/setting.dart
index 8bc321ce..fb69649f 100644
--- a/lib/data/store/setting.dart
+++ b/lib/data/store/setting.dart
@@ -1,9 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:toolbox/core/persistant_store.dart';
+import 'package:toolbox/core/utils/platform.dart';
 
 class SettingStore extends PersistentStore {
   StoreProperty<int> get primaryColor =>
-      property('primaryColor', defaultValue: Colors.deepPurpleAccent.value);
+      property('primaryColor', defaultValue: Colors.pink.value);
 
   StoreProperty<int> get serverStatusUpdateInterval =>
       property('serverStatusUpdateInterval', defaultValue: 3);
@@ -37,5 +38,5 @@ class SettingStore extends PersistentStore {
   StoreProperty<String> get fontPath => property('fontPath');
 
   /// Backgroud running (Android)
-  StoreProperty<bool> get bgRun => property('bgRun', defaultValue: true);
+  StoreProperty<bool> get bgRun => property('bgRun', defaultValue: isAndroid);
 }
diff --git a/lib/view/page/backup.dart b/lib/view/page/backup.dart
index e0d69e6f..570a620f 100644
--- a/lib/view/page/backup.dart
+++ b/lib/view/page/backup.dart
@@ -191,7 +191,7 @@ class BackupPage extends StatelessWidget {
       );
     } catch (e) {
       showSnackBar(context, Text(e.toString()));
-      return;
+      rethrow;
     }
   }
 }
diff --git a/lib/view/page/ping.dart b/lib/view/page/ping.dart
index 1ba754ba..6b3b1106 100644
--- a/lib/view/page/ping.dart
+++ b/lib/view/page/ping.dart
@@ -85,6 +85,7 @@ class _PingPageState extends State<PingPage>
             doPing();
           } catch (e) {
             showSnackBar(context, Text('Error: \n$e'));
+            rethrow;
           }
         },
         child: const Icon(Icons.play_arrow),
@@ -154,18 +155,14 @@ class _PingPageState extends State<PingPage>
       return;
     }
 
-    try {
-      await Future.wait(_serverProvider.servers.values.map((e) async {
-        if (e.client == null) {
-          return;
-        }
-        final result = await e.client!.run('ping -c 3 $target').string;
-        _results.add(PingResult.parse(e.spi.name, result));
-        setState(() {});
-      }));
-    } catch (e) {
-      showSnackBar(context, Text(e.toString()));
-    }
+    await Future.wait(_serverProvider.servers.values.map((e) async {
+      if (e.client == null) {
+        return;
+      }
+      final result = await e.client!.run('ping -c 3 $target').string;
+      _results.add(PingResult.parse(e.spi.name, result));
+      setState(() {});
+    }));
   }
 
   @override
diff --git a/lib/view/page/private_key/edit.dart b/lib/view/page/private_key/edit.dart
index 88c61333..a38abca7 100644
--- a/lib/view/page/private_key/edit.dart
+++ b/lib/view/page/private_key/edit.dart
@@ -105,18 +105,16 @@ class _PrivateKeyEditPageState extends State<PrivateKeyEditPage>
           );
         });
         final info = PrivateKeyInfo(name, key, '');
-        bool haveErr = false;
         try {
           info.privateKey = await compute(decyptPem, [key, pwd]);
         } catch (e) {
           showSnackBar(context, Text(e.toString()));
-          haveErr = true;
+          rethrow;
         } finally {
           setState(() {
             _loading = const SizedBox();
           });
         }
-        if (haveErr) return;
         if (widget.info != null) {
           _provider.updateInfo(widget.info!, info);
         } else {
diff --git a/lib/view/page/server/detail.dart b/lib/view/page/server/detail.dart
index 20da05fd..5a6e5813 100644
--- a/lib/view/page/server/detail.dart
+++ b/lib/view/page/server/detail.dart
@@ -204,9 +204,9 @@ class _ServerDetailPageState extends State<ServerDetailPage>
   }
 
   Widget _buildMemView(ServerStatus ss) {
-    final used = ss.mem.used / ss.mem.total * 100;
     final free = ss.mem.free / ss.mem.total * 100;
-    final avail = ss.mem.avail / ss.mem.total * 100;
+    final avail = ss.mem.availPercent * 100;
+    final used = ss.mem.usedPercent * 100;
 
     return RoundRectCard(
       Padding(
@@ -245,7 +245,7 @@ class _ServerDetailPageState extends State<ServerDetailPage>
 
   Widget _buildSwapView(ServerStatus ss) {
     if (ss.swap.total == 0) return const SizedBox();
-    final used = ss.swap.used / ss.swap.total * 100;
+    final used = ss.swap.usedPercent * 100;
     final cached = ss.swap.cached / ss.swap.total * 100;
     return RoundRectCard(
       Padding(
diff --git a/lib/view/page/server/tab.dart b/lib/view/page/server/tab.dart
index 1b6d6fe0..753eed9a 100644
--- a/lib/view/page/server/tab.dart
+++ b/lib/view/page/server/tab.dart
@@ -205,7 +205,7 @@ class _ServerPageState extends State<ServerPage>
           mainAxisAlignment: MainAxisAlignment.spaceAround,
           children: [
             _buildPercentCircle(ss.cpu.usedPercent()),
-            _buildPercentCircle(ss.mem.used / ss.mem.total * 100),
+            _buildPercentCircle(ss.mem.usedPercent * 100),
             _buildIOData('Conn:\n${ss.tcp.maxConn}', 'Fail:\n${ss.tcp.fail}'),
             _buildIOData(
                 'Total:\n${rootDisk.size}', 'Used:\n${rootDisk.usedPercent}%')