Create a ravendb database on a sevrer with high latency from you, such as in the AWS when running the benchmark from your computer.
Add database information to appsettings.json or create an appsettings.local.json
Seed database with Sample data. This is available in the UI with RavenDB 4
Compile the project for Release, and run.
Blog post explaining what this is about: https://scatteredcode.net/parallel-foreach-async-in-c/
BenchmarkDotNet=v0.12.0, OS=Windows 10.0.18363 AMD Ryzen Threadripper 2950X, 1 CPU, 32 logical and 16 physical cores .NET Core SDK=3.1.100 [Host] : .NET Core 3.1.0 (CoreCLR 4.700.19.56402, CoreFX 4.700.19.56404), X64 RyuJIT DefaultJob : .NET Core 3.1.0 (CoreCLR 4.700.19.56402, CoreFX 4.700.19.56404), X64 RyuJIT
| Method | Mean | Error | StdDev | Ratio | RatioSD |
|---|---|---|---|---|---|
| Linear | 22.599 s | 0.4394 s | 0.5866 s | 1.00 | 0.00 |
| ForEachAsync | 2.499 s | 0.0491 s | 0.0947 s | 0.11 | 0.00 |
| ParallelForEachAsync | 2.485 s | 0.0604 s | 0.0565 s | 0.11 | 0.00 |
| AsyncParallelForEach | 2.157 s | 0.0423 s | 0.0578 s | 0.10 | 0.00 |
| AsyncEnumerableParallelForEach | 2.130 s | 0.0425 s | 0.0522 s | 0.09 | 0.00 |
BenchmarkDotNet=v0.12.0, OS=Windows 10.0.18363 AMD Ryzen Threadripper 2950X, 1 CPU, 32 logical and 16 physical cores .NET Core SDK=3.1.100 [Host] : .NET Core 3.1.0 (CoreCLR 4.700.19.56402, CoreFX 4.700.19.56404), X64 RyuJIT Job-WEHRKA : .NET Core 3.1.0 (CoreCLR 4.700.19.56402, CoreFX 4.700.19.56404), X64 RyuJIT
InvocationCount=1 UnrollFactor=1
| Method | Mean | Error | StdDev | Ratio | RatioSD |
|---|---|---|---|---|---|
| Linear | 244.07 s | 5.703 s | 8.879 s | 1.00 | 0.00 |
| ForEachAsync | 30.84 s | 1.899 s | 5.324 s | 0.11 | 0.01 |
| AsyncForEach | 272.10 s | 5.435 s | 8.620 s | 1.12 | 0.05 |
| ParallelForEachAsync | 26.53 s | 0.339 s | 0.317 s | 0.11 | 0.00 |
| AsyncParallelForEach | 25.79 s | 0.490 s | 0.564 s | 0.10 | 0.00 |
| AsyncEnumerableParallelForEach | 24.67 s | 0.436 s | 0.408 s | 0.10 | 0.00 |