Every now and again, your build time gets so long you have to investigate what the cause is. Since Visual Studio uses MSBuild, it is possible to get very detailed build information.
The first step is getting into diagnostic mode. This will print out way too much information, but it is the only mode that prints out execution summaries for each project. To get into diagnostics mode, simply go to Tools -> Options -> Projects and Solutions -> Build and Run. From there, you can change the MSBuild verbosity to diagnostic.
Now just build (or rebuild). Then copy the build output to a txt file and save it somewhere.
The only problem with the output is the amount of information (300K lines on a rebuild of a medium size project). It has ton’s of valuable information, but an easy way to process it is needed. The biggest value, in my opinion, is the section at the end of every project where the Summary information about projects, targets, and tasks are displayed. To help retrieve this info, I wrote a quick little Powershell script.
param
(
[string] $file = ""
)
if(!(test-path $file)){
throw "$file not found"
}
function accumulate_and_print_project_info(){
begin{
$curr_project = ""
$should_print = $false
}
process{
if($_ -match "----- (re)?build (all )?started: project: (.*) -----"){
$curr_project = $matches[3]
"----- $curr_project -----"
$should_print = $false
}elseif($curr_project -and !$should_print -and $_.EndsWith("Summary:")){
$_
$should_print = $true
}elseif($curr_project -and $should_print -and $_ -eq ""){
$should_print = $false
}elseif($should_print){
$_
}
}
}
gc $file | accumulate_and_print_project_info
The output is going to look something like the following.
----- ControlPanel, Configuration: Development Any CPU -----
Project Performance Summary:
2672 ms C:\Users\brian.hartsock\Documents\Visual Studio 2008\Projects\Api\cp3\ControlPanel\ControlPanel.csproj 1 calls
Target Performance Summary:
0 ms CreateSatelliteAssemblies 1 calls
0 ms _ComputeNonExistentFileProperty 1 calls
0 ms Clean 1 calls
0 ms _AfterCompileWinFXInternal 1 calls
0 ms BeforeCompile 1 calls
0 ms BeforeClean 1 calls
0 ms AfterBuild 1 calls
0 ms GetTargetPath 1 calls
0 ms _CheckForCompileOutputs 1 calls
0 ms EntityDeploy 1 calls
0 ms ResolveVCProjectReferences 1 calls
0 ms _SetEmbeddedWin32ManifestProperties 1 calls
0 ms StyleCopForceFullAnalysis 1 calls
0 ms CleanPublishFolder 1 calls
0 ms BeforeBuild 1 calls
0 ms CoreResGen 1 calls
0 ms BeforeRebuild 1 calls
0 ms _CopySourceItemsToOutputDirectory 1 calls
0 ms AfterResGen 1 calls
0 ms Build 1 calls
0 ms SetWin32ManifestProperties 1 calls
0 ms AssignTargetPaths 1 calls
0 ms CoreBuild 1 calls
0 ms AfterResolveReferences 1 calls
0 ms Compile 1 calls
0 ms ResGen 1 calls
0 ms AfterClean 1 calls
0 ms Rebuild 1 calls
0 ms PrepareResourceNames 1 calls
0 ms BuildOnlySettings 1 calls
0 ms PrepareResources 1 calls
0 ms CleanReferencedProjects 1 calls
0 ms AfterMarkupCompilePass1 1 calls
0 ms FileClassification 1 calls
0 ms AfterCompile 1 calls
0 ms CompileRdlFiles 1 calls
0 ms BeforeResolveReferences 1 calls
0 ms CreateCustomManifestResourceNames 1 calls
0 ms ResolveReferences 1 calls
0 ms DesignTimeMarkupCompilation 1 calls
0 ms AfterRebuild 1 calls
0 ms GetReferenceAssemblyPaths 1 calls
0 ms PrepareForRun 1 calls
0 ms AfterCompileWinFX 1 calls
0 ms BeforeResGen 1 calls
1 ms PrepareRdlFiles 1 calls
1 ms GetCopyToOutputDirectoryItems 1 calls
1 ms SplitResourcesByCulture 1 calls
1 ms _SplitProjectReferencesByFileExistence 1 calls
1 ms _GenerateCompileInputs 1 calls
1 ms _GenerateSatelliteAssemblyInputs 1 calls
1 ms GetWinFXPath 1 calls
1 ms EntityClean 1 calls
1 ms _CheckForInvalidConfigurationAndPlatform 1 calls
1 ms ResolveProjectReferences 1 calls
1 ms PrepareForBuild 1 calls
3 ms GetFrameworkPaths 1 calls
8 ms CoreClean 1 calls
14 ms IncrementalClean 1 calls
17 ms CopyFilesToOutputDirectory 1 calls
17 ms _CleanGetCurrentAndPriorFileWrites 1 calls
66 ms ResolveAssemblyReferences 1 calls
399 ms _CopyFilesMarkedCopyLocal 1 calls
519 ms StyleCop 1 calls
636 ms CoreCompile 1 calls
974 ms PostBuildEvent 1 calls
Task Performance Summary:
0 ms Delete 2 calls
0 ms Message 6 calls
0 ms EntityDeploy 1 calls
0 ms GetFrameworkSdkPath 1 calls
0 ms CreateProperty 1 calls
0 ms AssignTargetPath 5 calls
0 ms MakeDir 2 calls
1 ms ConvertToAbsolutePath 1 calls
1 ms AssignCulture 1 calls
1 ms GetWinFXPath 1 calls
1 ms FindAppConfigFile 1 calls
1 ms ReadLinesFromFile 2 calls
1 ms EntityClean 1 calls
2 ms CreateItem 3 calls
2 ms WriteLinesToFile 2 calls
3 ms GetFrameworkPath 2 calls
13 ms RemoveDuplicates 3 calls
20 ms FindUnderPath 7 calls
66 ms ResolveAssemblyReference 1 calls
415 ms Copy 6 calls
515 ms StyleCopTask 1 calls
635 ms Csc 1 calls
973 ms Exec 1 calls
Now you should have all the data you need to figure out what is taking so long to build your project.