Add option to set maximum thread count for compression (and uncompression)

Add option to lock HDD threads to 1 (minimises performance impact, reduces fragmentation, can improve speed due to reduction in seek times)
All background compression is now limited to one thread.
Update Version

Author: Iridium-IO

CompactGUI.Core/Compactor.vb

@@ -2,6 +2,7 @@
 Imports System.Runtime.InteropServices
 Imports System.Threading
 
+
 Public Class Compactor : Implements IDisposable
 
     Public Sub New(folder As String, cLevel As CompressionAlgorithm, excludedFilesTypes As String())
@@ -33,21 +34,33 @@ Public Class Compactor : Implements IDisposable
 
 
 
-    Public Async Function RunCompactAsync(Optional progressMonitor As IProgress(Of (percentageProgress As Integer, currentFile As String)) = Nothing) As Task(Of Boolean)
+    Public Async Function RunCompactAsync(Optional progressMonitor As IProgress(Of (percentageProgress As Integer, currentFile As String)) = Nothing, Optional MaxParallelism As Integer = 1) As Task(Of Boolean)
         If _cancellationTokenSource.IsCancellationRequested Then Return False
 
         Dim FilesList = Await BuildWorkingFilesList()
         Dim totalFilesSize As Long = FilesList.Sum(Function(f) f.Item2)
         _processedFilesBytes = 0
 
+        If MaxParallelism <= 0 Then MaxParallelism = Environment.ProcessorCount
+
+
+        Dim sw As New Stopwatch
+        sw.Start()
+
+        Dim paraOptions As New ParallelOptions With {.MaxDegreeOfParallelism = MaxParallelism}
 
-        Await Parallel.ForEachAsync(FilesList,
+        Await Parallel.ForEachAsync(FilesList, paraOptions,
                                 Function(file, _ctx) As ValueTask
                                     If _ctx.IsCancellationRequested Then Return ValueTask.FromCanceled(_ctx)
                                     Return New ValueTask(PauseAndProcessFile(file.Item1, _cancellationTokenSource.Token, file.Item2, totalFilesSize, progressMonitor))
                                 End Function).ConfigureAwait(False)
 
 
+        sw.Stop()
+
+        Debug.WriteLine($"Completed in {sw.Elapsed.TotalSeconds} s")
+
+
         If _cancellationTokenSource.IsCancellationRequested Then Return False
 
         Return True

CompactGUI.Core/Uncompactor.vb

@@ -9,16 +9,30 @@ Public Class Uncompactor
     Private _cancellationTokenSource As New CancellationTokenSource
 
 
-    Public Async Function UncompactFiles(filesList As List(Of String), Optional progressMonitor As IProgress(Of (percentageProgress As Integer, currentFile As String)) = Nothing) As Task(Of Boolean)
+    Public Async Function UncompactFiles(filesList As List(Of String), Optional progressMonitor As IProgress(Of (percentageProgress As Integer, currentFile As String)) = Nothing, Optional MaxParallelism As Integer = 1) As Task(Of Boolean)
 
         Dim totalFiles As Integer = filesList.Count
 
+        If MaxParallelism <= 0 Then MaxParallelism = Environment.ProcessorCount
+
+        Dim paraOptions As New ParallelOptions With {.MaxDegreeOfParallelism = MaxParallelism}
+
+
+        Dim sw As New Stopwatch
+        sw.Start()
+
+
         _processedFileCount.Clear()
-        Await Parallel.ForEachAsync(filesList,
+        Await Parallel.ForEachAsync(filesList, paraOptions,
                                    Function(file, _ctx) As ValueTask
                                        If _ctx.IsCancellationRequested Then Return ValueTask.FromCanceled(_ctx)
                                        Return New ValueTask(PauseAndProcessFile(file, _cancellationTokenSource.Token, totalFiles, progressMonitor))
                                    End Function).ConfigureAwait(False)
+
+
+        sw.Stop()
+        Debug.WriteLine($"Completed in {sw.Elapsed.TotalSeconds} s")
+
         Return True
     End Function
 

CompactGUI/CompactGUI.vbproj

@@ -53,6 +53,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="diskdetector-net" Version="0.3.2" />
     <PackageReference Include="Fody" Version="6.8.1">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

CompactGUI/Models/ActiveFolder.vb

@@ -2,6 +2,7 @@
 Imports System.Collections.ObjectModel
 
 Imports Microsoft.Toolkit.Mvvm.ComponentModel
+Imports DiskDetector
 
 Public Class ActiveFolder : Inherits ObservableObject
 
@@ -19,6 +20,14 @@ Public Class ActiveFolder : Inherits ObservableObject
 
     Public Property IsFreshlyCompressed As Boolean = False
 
+    Public ReadOnly Property DiskType As DiskDetector.Models.HardwareType
+        Get
+            If FolderName Is Nothing Then Return Models.HardwareType.Unknown
+            Return DiskDetector.Detector.DetectDrive(FolderName.First, DiskDetector.Models.QueryType.RotationRate).HardwareType
+
+        End Get
+    End Property
+
     Public ReadOnly Property CompressionRatio As Decimal
         Get
             If UncompressedBytes = 0 OrElse CompressedBytes = 0 OrElse CompressedBytes = 1010101010101010 Then Return 0

CompactGUI/Models/Settings.vb

@@ -15,6 +15,9 @@ Public Class Settings : Inherits ObservableObject
     Public Property ShowNotifications As Boolean = False
     Public Property StartInSystemTray As Boolean = False
 
+    Public Property MaxCompressionThreads As Integer = 0
+    Public Property LockHDDsToOneThread As Boolean = True
+
     Private _EnableBackgroundWatcher As Boolean = True
     Public Property EnableBackgroundWatcher As Boolean
         Get

CompactGUI/Models/UpdateHandler.vb

@@ -2,7 +2,7 @@
 Imports System.Text.Json
 Public Class UpdateHandler
 
-    Public Shared Property CurrentVersion As New SemVersion(3, 5, 1)
+    Public Shared Property CurrentVersion As New SemVersion(3, 6, 0)
     Public Shared Property NewVersion As SemVersion
     Public Shared ReadOnly UpdateURL As String = "https://raw.githubusercontent.com/IridiumIO/CompactGUI/database/version.json"
     Public Shared ReadOnly httpClient As New HttpClient()

CompactGUI/ViewModels/MainViewModel.vb

@@ -190,12 +190,13 @@ Public Class MainViewModel : Inherits ObservableObject
         PauseResumeStatus = "Pause"
         CancelStatus = "Cancel"
 
+
         CProgress.Report((0, ""))
 
         Dim exclist As String() = GetSkipList()
 
         CoreCompactor = New Core.Compactor(ActiveFolder.FolderName, Core.WOFConvertCompressionLevel(ActiveFolder.SelectedCompressionMode), exclist)
-        Dim res = Await CoreCompactor.RunCompactAsync(CProgress)
+        Dim res = Await CoreCompactor.RunCompactAsync(CProgress, If(ActiveFolder.DiskType = DiskDetector.Models.HardwareType.Hdd AndAlso SettingsHandler.AppSettings.LockHDDsToOneThread, 1, SettingsHandler.AppSettings.MaxCompressionThreads))
 
         ActiveFolder.IsFreshlyCompressed = False
         If res Then ActiveFolder.IsFreshlyCompressed = True
@@ -236,7 +237,7 @@ Public Class MainViewModel : Inherits ObservableObject
 
         Dim compressedFilesList = ActiveFolder.AnalysisResults.Where(Function(rs) rs.CompressedSize < rs.UncompressedSize).Select(Of String)(Function(f) f.FileName).ToList
         CoreUncompactor = New Core.Uncompactor
-        Await CoreUncompactor.UncompactFiles(compressedFilesList, CProgress)
+        Await CoreUncompactor.UncompactFiles(compressedFilesList, CProgress, If(ActiveFolder.DiskType = DiskDetector.Models.HardwareType.Hdd AndAlso SettingsHandler.AppSettings.LockHDDsToOneThread, 1, SettingsHandler.AppSettings.MaxCompressionThreads))
 
         ActiveFolder.IsFreshlyCompressed = False
 

CompactGUI/Views/SettingsView.xaml

@@ -18,8 +18,8 @@
         <StackPanel Margin="0,40,0,0">
             <Label Content="Filetype Management" FontWeight="SemiBold" />
 
-            <StackPanel Margin="10,10,0,5">
-                <Grid Margin="0,0,0,5">
+            <StackPanel Margin="10,5,0,5">
+                <Grid Margin="0,0,0,2">
                     <TextBlock Text="manage local skipped filetypes"
                                VerticalAlignment="Center"
                                FontSize="14" />
@@ -77,26 +77,49 @@
             <Separator Margin="0,5,0,5" />
             <Label Content="System Integration" FontWeight="SemiBold" />
             <StackPanel Margin="10,5,0,7">
-                <CheckBox x:Name="uiIsContextEnabled"
+                <CheckBox x:Name="uiIsContextEnabled" Margin="0,-3"
                           Content="add to right-click context menu"
                           IsChecked="{Binding AppSettings.IsContextIntegrated, Mode=TwoWay}" />
-                <CheckBox x:Name="uiIsStartMenuEnabled"
+                <CheckBox x:Name="uiIsStartMenuEnabled" Margin="0,-3"
                           Content="add to start menu"
                           IsChecked="{Binding AppSettings.IsStartMenuEnabled, Mode=TwoWay}"
                            />
-                <CheckBox x:Name="uiShowNotifications"
+                <CheckBox x:Name="uiShowNotifications" Margin="0,-3"
                           Content="show notification on completion"
                           IsChecked="{Binding AppSettings.ShowNotifications, Mode=TwoWay}" />
-                <CheckBox x:Name="uiAlwaysStartInTray"
+                <CheckBox x:Name="uiAlwaysStartInTray" Margin="0,-3"
                           Content="start CompactGUI in system tray"
                           IsChecked="{Binding AppSettings.StartInSystemTray}" />
 
             </StackPanel>
+            <Separator Margin="0,5,0,5" />
+
+            <Label Content="Maximum Compression Threads" FontWeight="SemiBold" />
+
+            <StackPanel Orientation="Horizontal" Margin="15,0,15,0">
+
+                <Slider x:Name="compressionParallelism" Width="130"
+
+IsSnapToTickEnabled="True" LargeChange="1" Maximum="16" Minimum="0"
+Orientation="Horizontal" SmallChange="1" TickFrequency="1"
+TickPlacement="BottomRight"
+Value="{Binding AppSettings.MaxCompressionThreads, Mode=TwoWay}">
+
+                </Slider>
+
+                <Label Margin="15,5" FontWeight="SemiBold" Content="{Binding AppSettings.MaxCompressionThreads, FallbackValue=0}"/>
+                <CheckBox x:Name="uiLockHDDToOneThread" Margin="15,0"
+          Content="HDDs only use 1 thread"
+          IsChecked="{Binding AppSettings.LockHDDsToOneThread}" />
+            </StackPanel>
+            
+
+
             <Separator Margin="0,5,0,5" />
 
             <Label Content="Background Watcher Settings" FontWeight="SemiBold" />
             <StackPanel Margin="10,5,0,7">
-                <CheckBox x:Name="uiEnableBackgroundWatcher"
+                <CheckBox x:Name="uiEnableBackgroundWatcher" Margin="0,-3"
                           Content="monitor compressed folders for changes"
                           IsChecked="{Binding AppSettings.EnableBackgroundWatcher, Mode=TwoWay}">
 
@@ -106,9 +129,9 @@
                         </i:EventTrigger>
                     </i:Interaction.Triggers>
                 </CheckBox>
-                <CheckBox x:Name="uiEnableBackgroundAutoCompression"
+                <CheckBox x:Name="uiEnableBackgroundAutoCompression" 
                           Content="periodically check and keep folders compressed"
-                          Margin="30,0,0,0"
+                          Margin="30,-3,0,-3"
                           IsChecked="{Binding AppSettings.EnableBackgroundAutoCompression, Mode=TwoWay}">
 
                     <i:Interaction.Triggers>
@@ -119,11 +142,13 @@
                 </CheckBox>
 
             </StackPanel>
+            
+            
             <Separator Margin="0,5,0,5" />
 
             <Label Content="Updates" FontWeight="SemiBold" />
             <StackPanel Margin="10,5,0,7">
-                <CheckBox x:Name="uiEnablePreReleaseUpdates"
+                <CheckBox x:Name="uiEnablePreReleaseUpdates" Margin="0,-3"
                           Content="Check for pre-release updates"
                           IsChecked="{Binding AppSettings.EnablePreReleaseUpdates}" />
 
@@ -134,7 +159,7 @@
             <Label Content="UI Scaling" FontWeight="SemiBold" />
 
             <Slider x:Name="uiScalingFactor"
-                    Margin="15,5,15,20"
+                    Margin="15,0,15,0"
                     IsSnapToTickEnabled="True" LargeChange="0.125" Maximum="1.5" Minimum="0.5"
                     Orientation="Horizontal" SmallChange="0.125" TickFrequency="0.125"
                     TickPlacement="BottomRight"
@@ -149,7 +174,9 @@
                 </i:Interaction.Triggers>
             </Slider>
 
+        
             <Separator Margin="0,0,0,30" />
+
             <Grid HorizontalAlignment="Center">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="*" />