BenchmarkDotNet projects for comparing .NET 7 to Xamarin.Android
To run the benchmarks with .NET 7 (default):
dotnet build ./DotNetRunner/DotNetRunner.csproj -c Release -t:Benchmark
To run the benchmarks with .NET 8:
dotnet build ./DotNetRunner/DotNetRunner.csproj -c Release -t:Benchmark -p:Targeting=net8.0
To run the benchmarks with "classic" Xamarin.Android:
msbuild ./XamarinRunner/XamarinRunner.csproj -restore -p:Configuration=Release -t:Benchmark
An example of running all 3 benchmarks on a Pixel 5 device:
| Method | Mean | Error | StdDev | Allocated |
|---|---|---|---|---|
| .NET 6 Random.Next | 65.90 μs | 0.0720 μs | 0.0640 μs | - |
| Xamarin Random.Next | 84.55 μs | 0.0280 μs | 0.0260 μs | - |
| .NET 6 DTO.Now | 1.05 μs | 0.0016 μs | 0.0015 μs | - |
| Xamarin DTO.Now | 4.94 μs | 0.0050 μs | 0.0046 μs | - |
| .NET 6 DTO.UtcNow | 0.20 μs | 0.1100 ns | 0.0900 ns | - |
| Xamarin DTO.UtcNow | 0.22 μs | 0.0700 ns | 0.0600 ns | - |
| .NET 6 Regex Compiled | 134.70 μs | 3.0500 μs | 8.7600 μs | 20 KB |
| Xamarin Regex Compiled | 16.49 μs | 0.1990 μs | 0.1760 μs | - |
Note that RegexOptions.Compiled doesn't do anything in Xamarin.Android or mono/mono.
If you rerun with -p:ColdStart=true, this will simulate the cost at startup:
| Method | Mean | Allocated |
|---|---|---|
| .NET 6 Random.Next | 1.072 ms | - |
| Xamarin Random.Next | 1.434 ms | - |
| .NET 6 DateTimeOffset.Now | 3.367 ms | - |
| Xamarin DateTimeOffset.Now | 3.396 ms | - |
| .NET 6 Regex Compiled | 91.160 ms | 22 KB |
| Xamarin Regex Compiled | 5.132 ms | - |