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erikdarlingdataclaude
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Issue #281 Gap 1: Standardize memory grant stats collection and add charts
Both apps now collect from dm_exec_query_resource_semaphores (previously Lite used dm_exec_query_memory_grants). Added two new per-pool charts to the Memory Grants sub-tab in both apps: Sizing (available/granted/used MB) and Activity (grantees/waiters/timeouts/forced grants). Dashboard: simplified collector by removing inline OUTER APPLY delta, added memory_grant_stats to the proper delta framework (calculate_deltas), removed unused warning columns, added upgrade script for 1.3.0-to-2.0.0. Lite: new DuckDB schema (v14 migration), DeltaCalculator seeding for timeout/forced counters, new Memory Grants sub-tab with two ScottPlot charts. Also includes waiting_tasks collector simplification. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1 parent 98d5e56 commit 9995376

21 files changed

Lines changed: 828 additions & 469 deletions

‎Dashboard/Controls/MemoryContent.xaml‎

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<!-- Memory Grants Sub-Tab -->
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<TabItem Header="Memory Grants">
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<!-- Chart + Summary Panel (grid removed) -->
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<Border BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Margin="5">
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="*"/>
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<RowDefinition Height="Auto"/>
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</Grid.RowDefinitions>
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<TextBlock Grid.Row="0" Text="Memory Grants Over Time" FontWeight="Bold" FontSize="14" Margin="10,5" Foreground="{DynamicResource ForegroundBrush}"/>
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<ScottPlot:WpfPlot Grid.Row="1" x:Name="MemoryGrantsChart"/>
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<!-- Summary Panel -->
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<Border Grid.Row="2" Background="{DynamicResource BackgroundBrush}" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="0,1,0,0" Padding="10,8">
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<StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
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<TextBlock Text="Grantees:" FontWeight="SemiBold" Foreground="{DynamicResource ForegroundDimBrush}" VerticalAlignment="Center" Margin="0,0,5,0"/>
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<TextBlock x:Name="MemoryGrantsGranteesText" Text="0" Foreground="{DynamicResource ForegroundBrush}" VerticalAlignment="Center" Margin="0,0,20,0"/>
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<TextBlock Text="Waiters:" FontWeight="SemiBold" Foreground="{DynamicResource ForegroundDimBrush}" VerticalAlignment="Center" Margin="0,0,5,0"/>
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<TextBlock x:Name="MemoryGrantsWaitersText" Text="0" Foreground="{DynamicResource ForegroundBrush}" VerticalAlignment="Center" Margin="0,0,20,0"/>
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<TextBlock Text="Timeouts:" FontWeight="SemiBold" Foreground="{DynamicResource ForegroundDimBrush}" VerticalAlignment="Center" Margin="0,0,5,0"/>
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<TextBlock x:Name="MemoryGrantsTimeoutsText" Text="0" Foreground="{DynamicResource ForegroundBrush}" VerticalAlignment="Center" Margin="0,0,20,0"/>
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<TextBlock Text="Forced:" FontWeight="SemiBold" Foreground="{DynamicResource ForegroundDimBrush}" VerticalAlignment="Center" Margin="0,0,5,0"/>
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<TextBlock x:Name="MemoryGrantsForcedText" Text="0" Foreground="{DynamicResource ForegroundBrush}" VerticalAlignment="Center"/>
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</StackPanel>
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</Border>
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<TextBlock x:Name="MemoryGrantsNoDataMessage" Grid.Row="1" Style="{StaticResource EmptyStateMessage}"
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Text="No memory grant data in selected time range"/>
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<controls:LoadingOverlay x:Name="MemoryGrantsLoading" Grid.Row="1"/>
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</Grid>
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</Border>
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="*"/>
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<RowDefinition Height="*"/>
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</Grid.RowDefinitions>
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<!-- Chart 1: Memory Grant Sizing -->
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<Border Grid.Row="0" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Margin="5,5,5,2">
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="*"/>
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</Grid.RowDefinitions>
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<TextBlock Grid.Row="0" Text="Memory Grant Sizing Over Time" FontWeight="Bold" FontSize="14" Margin="10,5" Foreground="{DynamicResource ForegroundBrush}"/>
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<ScottPlot:WpfPlot Grid.Row="1" x:Name="MemoryGrantSizingChart"/>
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<TextBlock x:Name="MemoryGrantSizingNoData" Grid.Row="1" Style="{StaticResource EmptyStateMessage}"
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Text="No memory grant data in selected time range"/>
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<controls:LoadingOverlay x:Name="MemoryGrantSizingLoading" Grid.Row="1"/>
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</Grid>
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</Border>
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<!-- Chart 2: Memory Grant Activity -->
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<Border Grid.Row="1" BorderBrush="{DynamicResource BorderBrush}" BorderThickness="1" Margin="5,2,5,5">
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"/>
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<RowDefinition Height="*"/>
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</Grid.RowDefinitions>
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<TextBlock Grid.Row="0" Text="Memory Grant Activity Over Time" FontWeight="Bold" FontSize="14" Margin="10,5" Foreground="{DynamicResource ForegroundBrush}"/>
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<ScottPlot:WpfPlot Grid.Row="1" x:Name="MemoryGrantActivityChart"/>
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<TextBlock x:Name="MemoryGrantActivityNoData" Grid.Row="1" Style="{StaticResource EmptyStateMessage}"
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Text="No memory grant data in selected time range"/>
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<controls:LoadingOverlay x:Name="MemoryGrantActivityLoading" Grid.Row="1"/>
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</Grid>
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</Border>
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</Grid>
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</TabItem>
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<!-- Memory Clerks Sub-Tab -->

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