diff --git a/src/PlanViewer.App/PlanViewer.App.csproj b/src/PlanViewer.App/PlanViewer.App.csproj index dc22182..1ab55a9 100644 --- a/src/PlanViewer.App/PlanViewer.App.csproj +++ b/src/PlanViewer.App/PlanViewer.App.csproj @@ -6,7 +6,7 @@ app.manifest EDD.ico true - 1.4.1 + 1.4.2 Erik Darling Darling Data LLC Performance Studio diff --git a/src/PlanViewer.Core/Services/PlanAnalyzer.cs b/src/PlanViewer.Core/Services/PlanAnalyzer.cs index d89458d..c2b2fe6 100644 --- a/src/PlanViewer.Core/Services/PlanAnalyzer.cs +++ b/src/PlanViewer.Core/Services/PlanAnalyzer.cs @@ -133,22 +133,72 @@ private static void AnalyzeStatement(PlanStatement stmt, AnalyzerConfig cfg) { var reason = stmt.NonParallelPlanReason switch { + // User/config forced serial "MaxDOPSetToOne" => "MAXDOP is set to 1", + "QueryHintNoParallelSet" => "OPTION (MAXDOP 1) hint forces serial execution", + "ParallelismDisabledByTraceFlag" => "Parallelism disabled by trace flag", + + // Passive — optimizer chose serial, nothing wrong "EstimatedDOPIsOne" => "Estimated DOP is 1 (the plan's estimated cost was below the cost threshold for parallelism)", + + // Edition/environment limitations "NoParallelPlansInDesktopOrExpressEdition" => "Express/Desktop edition does not support parallelism", + "NoParallelCreateIndexInNonEnterpriseEdition" => "Parallel index creation requires Enterprise edition", + "NoParallelPlansDuringUpgrade" => "Parallel plans disabled during upgrade", + "NoParallelForPDWCompilation" => "Parallel plans not supported for PDW compilation", + "NoParallelForCloudDBReplication" => "Parallel plans not supported during cloud DB replication", + + // Query constructs that block parallelism (actionable) "CouldNotGenerateValidParallelPlan" => "Optimizer could not generate a valid parallel plan. Common causes: scalar UDFs, inserts into table variables, certain system functions, or OPTION (MAXDOP 1) hints", - "QueryHintNoParallelSet" => "OPTION (MAXDOP 1) hint forces serial execution", + "TSQLUserDefinedFunctionsNotParallelizable" => "T-SQL scalar UDF prevents parallelism. Rewrite as an inline table-valued function, or on SQL Server 2019+ check if the UDF is eligible for automatic inlining", + "CLRUserDefinedFunctionRequiresDataAccess" => "CLR UDF with data access prevents parallelism", + "NonParallelizableIntrinsicFunction" => "Non-parallelizable intrinsic function in the query", + "TableVariableTransactionsDoNotSupportParallelNestedTransaction" => "Table variable transaction prevents parallelism. Consider using a #temp table instead", + "UpdatingWritebackVariable" => "Updating a writeback variable prevents parallelism", + "DMLQueryReturnsOutputToClient" => "DML with OUTPUT clause returning results to client prevents parallelism", + "MixedSerialAndParallelOnlineIndexBuildNotSupported" => "Mixed serial/parallel online index build not supported", + "NoRangesResumableCreate" => "Resumable index create cannot use parallelism for this operation", + + // Cursor limitations + "NoParallelCursorFetchByBookmark" => "Cursor fetch by bookmark cannot use parallelism", + "NoParallelDynamicCursor" => "Dynamic cursors cannot use parallelism", + "NoParallelFastForwardCursor" => "Fast-forward cursors cannot use parallelism", + + // Memory-optimized / natively compiled + "NoParallelForMemoryOptimizedTables" => "Memory-optimized tables do not support parallel plans", + "NoParallelForDmlOnMemoryOptimizedTable" => "DML on memory-optimized tables cannot use parallelism", + "NoParallelForNativelyCompiledModule" => "Natively compiled modules do not support parallelism", + + // Remote queries + "NoParallelWithRemoteQuery" => "Remote queries cannot use parallelism", + "NoRemoteParallelismForMatrix" => "Remote parallelism not available for this query shape", + _ => stmt.NonParallelPlanReason }; - // Only warn (not info) when the user explicitly forced serial execution - var isExplicit = stmt.NonParallelPlanReason is "MaxDOPSetToOne" or "QueryHintNoParallelSet"; + // Actionable: user forced serial, or something in the query blocks parallelism + // that could potentially be rewritten. Info: passive (cost too low) or + // environmental (edition, upgrade, cursor type, memory-optimized). + var isActionable = stmt.NonParallelPlanReason is + "MaxDOPSetToOne" or "QueryHintNoParallelSet" or "ParallelismDisabledByTraceFlag" + or "CouldNotGenerateValidParallelPlan" + or "TSQLUserDefinedFunctionsNotParallelizable" + or "CLRUserDefinedFunctionRequiresDataAccess" + or "NonParallelizableIntrinsicFunction" + or "TableVariableTransactionsDoNotSupportParallelNestedTransaction" + or "UpdatingWritebackVariable" + or "DMLQueryReturnsOutputToClient" + or "NoParallelCursorFetchByBookmark" + or "NoParallelDynamicCursor" + or "NoParallelFastForwardCursor" + or "NoParallelWithRemoteQuery" + or "NoRemoteParallelismForMatrix"; stmt.PlanWarnings.Add(new PlanWarning { WarningType = "Serial Plan", Message = $"Query running serially: {reason}.", - Severity = isExplicit ? PlanWarningSeverity.Warning : PlanWarningSeverity.Info + Severity = isActionable ? PlanWarningSeverity.Warning : PlanWarningSeverity.Info }); } diff --git a/src/PlanViewer.Web/Pages/Index.razor b/src/PlanViewer.Web/Pages/Index.razor index 91154d3..67ed2a7 100644 --- a/src/PlanViewer.Web/Pages/Index.razor +++ b/src/PlanViewer.Web/Pages/Index.razor @@ -7,6 +7,7 @@

Free SQL Server Query Plan Analysis

Paste or upload a .sqlplan file. Your plan XML never leaves your browser.

+

Powered by the same analysis engine in the Performance Studio app.

@if (errorMessage != null) { diff --git a/src/PlanViewer.Web/wwwroot/css/app.css b/src/PlanViewer.Web/wwwroot/css/app.css index 0e5569e..b352858 100644 --- a/src/PlanViewer.Web/wwwroot/css/app.css +++ b/src/PlanViewer.Web/wwwroot/css/app.css @@ -168,9 +168,25 @@ main { font-family: 'Montserrat', sans-serif; font-size: 1.05rem; font-weight: 600; + margin-bottom: 0.4rem; +} + +.powered-by { + color: var(--text-secondary); + font-size: 0.9rem; margin-bottom: 1.5rem; } +.powered-by a { + color: var(--accent); + text-decoration: none; + font-weight: 600; +} + +.powered-by a:hover { + text-decoration: underline; +} + /* === Input Area === */ .input-area { text-align: left; diff --git a/src/PlanViewer.Web/wwwroot/favicon.png b/src/PlanViewer.Web/wwwroot/favicon.png new file mode 100644 index 0000000..9c6db66 Binary files /dev/null and b/src/PlanViewer.Web/wwwroot/favicon.png differ diff --git a/src/PlanViewer.Web/wwwroot/index.html b/src/PlanViewer.Web/wwwroot/index.html index 079a21e..40749b9 100644 --- a/src/PlanViewer.Web/wwwroot/index.html +++ b/src/PlanViewer.Web/wwwroot/index.html @@ -4,6 +4,17 @@ Free SQL Server Query Plan Analysis — Darling Data + + + + + + + + + + +