Fix memory slider

src/views/backups.js

@@ -7,6 +7,7 @@ angular.module('Application').controller('BackupsController', ['$scope', '$locat
 
     $scope.config = Client.getConfig();
     $scope.user = Client.getUserInfo();
+    $scope.memory = null; // { memory, swap }
 
     $scope.manualBackupApps = [];
 
@@ -477,13 +478,14 @@ angular.module('Application').controller('BackupsController', ['$scope', '$locat
             $scope.configureBackup.syncConcurrency = $scope.backupConfig.syncConcurrency || ($scope.backupConfig.provider === 's3' ? 20 : 10);
             $scope.configureBackup.copyConcurrency = $scope.backupConfig.copyConcurrency || ($scope.backupConfig.provider === 's3' ? 500 : 10);
 
+            var totalMemory = Math.max(($scope.memory.memory + $scope.memory.swap) * 1.5, 2 * 1024 * 1024);
             $scope.configureBackup.memoryTicks = [ 400 * 1024 * 1024 ];
-            for (var i = 512; i <= 4 * 1024; i *= 2) {
+            for (var i = 512; i <= totalMemory/1024/1024; i *= 2) {
                 $scope.configureBackup.memoryTicks.push(i * 1024 * 1024);
             }
 
-            $scope.configureBackup.uploadPartSizeTicks = [ 10 * 1024 * 1024 ];
-            for (var j = 32; j <= 128; j *= 2) { // 5 GB is max for s3. but let's keep things practical for now
+            $scope.configureBackup.uploadPartSizeTicks = [ 5 * 1024 * 1024 ];
+            for (var j = 32; j <= 4 * 1024; j *= 2) { // 5 GB is max for s3. but let's keep things practical for now
                 $scope.configureBackup.uploadPartSizeTicks.push(j * 1024 * 1024);
             }
 
@@ -676,14 +678,20 @@ angular.module('Application').controller('BackupsController', ['$scope', '$locat
     }
 
     Client.onReady(function () {
-        fetchBackups();
-        getBackupConfig();
-        checkBackupConfig();
+        Client.memory(function (error, memory) {
+            if (error) console.error(error);
 
-        $scope.manualBackupApps = Client.getInstalledApps().filter(function (app) { return !app.enableBackup; });
+            $scope.memory = memory;
 
-        // show backup status
-        $scope.createBackup.checkStatus();
+            fetchBackups();
+            getBackupConfig();
+            checkBackupConfig();
+
+            $scope.manualBackupApps = Client.getInstalledApps().filter(function (app) { return !app.enableBackup; });
+
+            // show backup status
+            $scope.createBackup.checkStatus();
+        });
     });
 
     function readFileLocally(obj, file, fileName) {