Avalonia/samples/ControlCatalog/Pages/CarouselPage/CarouselPagePerformancePage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             x:Class="ControlCatalog.Pages.CarouselPagePerformancePage">
  <Grid ColumnDefinitions="*,240">

    <Border Grid.Column="0" Margin="12"
            BorderBrush="{DynamicResource SystemControlForegroundBaseMediumLowBrush}"
            BorderThickness="1"
            CornerRadius="6"
            ClipToBounds="True">
      <CarouselPage x:Name="DemoCarousel" />
    </Border>

    <Border Grid.Column="1"
            BorderBrush="{DynamicResource SystemControlForegroundBaseMediumLowBrush}"
            BorderThickness="1,0,0,0" Padding="12">
      <ScrollViewer>
        <StackPanel Spacing="8">

          <TextBlock Text="Actions" FontWeight="SemiBold" />
          <Button Content="Add 5 Pages"    HorizontalAlignment="Stretch" Click="OnAdd5" />
          <Button Content="Add 20 Pages"   HorizontalAlignment="Stretch" Click="OnAdd20" />
          <Button Content="Remove Last 5"  HorizontalAlignment="Stretch" Click="OnRemove5" />
          <Button Content="Clear All"      HorizontalAlignment="Stretch" Click="OnClearAll" />

          <Separator />

          <Button Content="Force GC"       HorizontalAlignment="Stretch" Click="OnForceGC" />
          <Button Content="Refresh Stats"  HorizontalAlignment="Stretch" Click="OnRefresh" />

          <Separator />

          <TextBlock Text="Statistics" FontWeight="SemiBold" />
          <TextBlock x:Name="PageCountText"  Text="Page count: 0"          FontSize="12" />
          <TextBlock x:Name="LiveCountText"  Text="Live instances: 0"      FontSize="12" />
          <TextBlock x:Name="HeapText"       Text="Heap: 0 KB"             FontSize="12" />
          <TextBlock x:Name="AllocText"      Text="Total allocated: 0 KB"  FontSize="12" />
          <TextBlock x:Name="LastOpTimeText" Text="Last Op: "              FontSize="12" />

        </StackPanel>
      </ScrollViewer>
    </Border>

  </Grid>
</UserControl>