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Memory usage improvements in build (#2626)

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* Use a WorkspaceContext in dotnet-build to cache project data across
multiple compilations in a single build action
* Dramatically reduce string and object duplication by introducing a
"Symbol Table" that shares instances of NuGetVersion, NuGetFramework,
VersionRange and string across multiple lock-file parses

Test Results:
* Testing was done by compiling Microsoft.AspNetCore.Mvc (and it's
dependencies) and taking memory snapshots after each compilation in
dotMemory
* We used to allocate ~3MB and deallocate ~2.5MB on EACH compilation in
a single build action. This has been reduced to ~120KB
allocated/deallocated
* After introducing WorkspaceContext, total memory usage spiked from 6MB
across the whole build action to about 13MB, introducing the symbol
table dropped it back to about 5-6MB.
This commit is contained in:
Andrew Stanton-Nurse 2016-04-22 15:01:56 -07:00
parent 80df3688b1
commit ef0ca39da1
42 changed files with 496 additions and 268 deletions
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18
test/dotnet-projectmodel-server.Tests/DthTests.cs
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@ -506,13 +506,13 @@ namespace Microsoft.DotNet.ProjectModel.Server.Tests
var testProjectRoot = Path.Combine(RepoRoot, "TestAssets", "ProjectModelServer", "MSBuildReferencesProjects", "ValidCase01");
foreach (var classLibrary in classLibraries)
{
dependencies.RetrieveDependency(classLibrary)
.AssertProperty("Type", LibraryType.MSBuildProject.ToString())
.AssertProperty("Path", NormalizePathString(Path.Combine(testProjectRoot, classLibrary, $"{classLibrary}.csproj")))
.AssertProperty<bool>("Resolved", true)
.AssertProperty("Name", classLibrary)
.AssertProperty<JArray>("Errors", array => array.Count == 0)
.AssertProperty<JArray>("Warnings", array => array.Count == 0);
var dependency = dependencies.RetrieveDependency(classLibrary);
dependency.AssertProperty("Type", LibraryType.MSBuildProject.ToString());
dependency.AssertProperty("Path", NormalizePathString(Path.Combine(testProjectRoot, classLibrary, $"{classLibrary}.csproj")));
dependency.AssertProperty<bool>("Resolved", true);
dependency.AssertProperty("Name", classLibrary);
dependency.AssertProperty<JArray>("Errors", array => array.Count == 0);
dependency.AssertProperty<JArray>("Warnings", array => array.Count == 0);
}
var references = messages.RetrieveSingleMessage(MessageTypes.References)
@ -632,12 +632,12 @@ namespace Microsoft.DotNet.ProjectModel.Server.Tests
afterDependencies.RetrieveDependency("ClassLibrary3");
}
}
[Fact]
public void TestMscorlibLibraryDuplication()
{
var projectPath = Path.Combine(RepoRoot, "TestAssets", "ProjectModelServer", "MscorlibLibraryDuplication");
using (var server = new DthTestServer(_loggerFactory))
using (var client = new DthTestClient(server, _loggerFactory))
{