Actualize benchmark

[Qyperion]

Summary

• Updated and fixed the benchmark projects for the current toolchain and package versions.
• Refactored benchmark setup to use shared operation-count configuration and refreshed simple, complex, and combined mapping benchmarks. Also removed commented code in Benchmark project.
• Added benchmark comparisons for AutoMapper, Facet, and Mapperly alongside Mapster, Mapster Roslyn/FEC/codegen, and AutoMapper.
• Updated README and package documentation with the latest benchmark results and performance notes.

[Copilot]

Pull request overview

This PR modernizes the repository’s benchmark projects and documentation to reflect the current toolchain and adds additional mapper library comparisons.

Changes:

• Updated benchmark projects to new namespaces/toolchain and refactored common benchmark parameters via a shared base class.
• Added comparison benchmarks/models for AutoMapper, Facet, and Mapperly alongside Mapster variants (default/Roslyn/FEC/codegen).
• Refreshed README/package docs with an updated benchmark snapshot and performance notes.

Reviewed changes

Copilot reviewed 30 out of 30 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/Benchmark/TestAdaptHelper.cs	Refactors benchmark helper to support AutoMapper/Facet/Mapperly runs and unifies loop logic.
src/Benchmark/Program.cs	Updates namespaces/usings for the benchmark entrypoint.
src/Benchmark/FooMapper.tt	Updates T4 template namespaces to Mapster.Benchmark.
src/Benchmark/FooMapper.g.cs	Regenerated codegen mapper with updated namespace/imports.
src/Benchmark/CustomerMapper.tt	Updates T4 template namespaces to Mapster.Benchmark.
src/Benchmark/CustomerMapper.g.cs	Regenerated codegen mapper with updated namespace/imports.
src/Benchmark/Comparisons/MapperlyModels.cs	Adds Mapperly DTOs + mapping definitions for benchmark comparisons.
src/Benchmark/Comparisons/FacetModels.cs	Adds Facet DTOs/attributes for benchmark comparisons.
src/Benchmark/Classes/Foo.cs	Moves benchmark model types into Mapster.Benchmark.Classes.
src/Benchmark/Classes/Customer.cs	Moves benchmark model types into Mapster.Benchmark.Classes.
src/Benchmark/Benchmarks/TestSimpleTypes.cs	Updates benchmark to use shared MapOperations parameter and adds new library runs.
src/Benchmark/Benchmarks/TestComplexTypes.cs	Updates benchmark to use shared MapOperations parameter and adds new library runs.
src/Benchmark/Benchmarks/TestAll.cs	Updates combined benchmark to use shared MapOperations parameter and adds new library runs.
src/Benchmark/Benchmarks/MappingBenchmarkBase.cs	Introduces shared [ParamsSource] for operation counts across benchmarks.
src/Benchmark/Benchmarks/Config.cs	Updates benchmark configuration/columns and namespaces.
src/Benchmark/Benchmark.csproj	Updates target framework, enables implicit usings, and adds new benchmark dependencies.
src/Benchmark.Development/TestAdaptHelper.cs	Updates namespaces for dev benchmarks (but currently breaks Mapster symbol resolution).
src/Benchmark.Development/Program.cs	Updates usings for new dev benchmark namespaces.
src/Benchmark.Development/MapsterVersion.cs	Updates namespace and refreshes benchmarked Mapster versions list.
src/Benchmark.Development/Classes/Foo.cs	Moves dev benchmark model types into new namespace.
src/Benchmark.Development/Classes/Customer.cs	Moves dev benchmark model types into new namespace.
src/Benchmark.Development/Benchmarks/TestSimpleTypes.cs	Updates namespaces/usings for dev benchmarks.
src/Benchmark.Development/Benchmarks/TestComplexTypes.cs	Updates namespaces/usings for dev benchmarks.
src/Benchmark.Development/Benchmarks/TestAll.cs	Updates namespaces/usings for dev benchmarks.
src/Benchmark.Development/Benchmarks/Config.cs	Updates namespaces (but currently breaks MapsterVersion resolution).
src/Benchmark.Development/Benchmark.Development.csproj	Updates root namespace and project settings formatting/structure.
src/.editorconfig	Adds formatting rules for csproj/props files.
README.md	Updates performance section and benchmark snapshot table.
docs/articles/packages/FastExpressionCompiler.md	Updates benchmark snapshot + points to README for full comparison.
docs/articles/packages/ExpressionDebugging.md	Replaces outdated Roslyn performance claims with current notes and link to README.

Comments suppressed due to low confidence (1)

src/Benchmark.Development/Benchmarks/Config.cs:37

• MapsterVersion is declared in the Mapster.Benchmark.Development namespace, but this file is in Mapster.Benchmark.Development.Benchmarks and doesn’t import the parent namespace. foreach (var version in MapsterVersion.Get()) will not compile without qualifying the type or adding using Mapster.Benchmark.Development;.

            foreach (var version in MapsterVersion.Get())
            {

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[DocSvartz]

Hi @Qyperion. Great work 👍.

[Qyperion]

@DocSvartz Is there any additional action required from my side for this PR to be merged?
Or just wait for it to be reviewed?

[DocSvartz]

@Qyperion Are you sure this is a valid result?
As far as I know, Facet is a sourcegen mapper.
Very strange metrics for a source code generation based mapper 🤔

[DocSvartz]

@andrerav @stagep Because of this, dependabot will come back to us again with a message about the Automapper being vulnerable. 😅
If you agree with this PR, then I think it should be disabled dependabot for this dependency.

[DocSvartz]

Is there any additional action required from my side for this PR to be merged?
Or just wait for it to be reviewed?

@Qyperion No action is required at this time.

Need to wait for the decision of the other contributors Regarding adding a dependency on Automapper