ASP.NET Core Performance Tests

How to execute performance tests for ASP.NET Core with wrk.

Create .NET Core Web App

Create new web app

$ dotnet new web

Replace code in Program.cs

using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;

namespace AspNetCoreBenchmark
{
    public class Program
    {
        public static void Main(string[] args)
        {
            new WebHostBuilder()
                .UseStartup<Startup>()
                .Build()
                .Run();
        }
    }

    public class Startup
    {
        private static string _response = "Hello World!";

        public void Configure(IApplicationBuilder app)
        {
            app.Run(async (context) =>
            {
                await context.Response.WriteAsync(_response);
            });
        }
    }
}

wrk - HTTP Benchmark Tool

Install guide for Linux. On Windows 10 use Bash on Ubuntu on Windows.

Execute Performance Tests

Start the server.

$ dotnet run

If you run wrk from a separate computer, which is recommended, change url to bind to *, so server listens requests on any IP address.

$ dotnet run --urls http://*:5000

Run benchmark with wrk. This run is using 256 connections across 32 client threads for a duration of 10 seconds.

$ wrk -c 256 -t 32 -d 10 http://localhost:5000

Results

ASP.NET Core server and wrk running in the same computer

Specs: Surface Book 2, i7-8650U, 16GB

Running 10s test @ http://localhost:61479
  32 threads and 256 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     6.61ms  766.82us  32.12ms   91.43%
    Req/Sec     1.20k   108.52     3.43k    93.65%
  385289 requests in 10.10s, 45.20MB read
Requests/sec:  38149.68
Transfer/sec:      4.48MB

Specs: Dell XPS 13, i7-6560U, 16GB

Execute benchmark for POST request with payload

More complex benchamrks need to be defined with lua-scripts. Check a short example how to execute POST request benchmark from the .NET Fake JSON Server’s documentation.

Source

Example benchamrking source code with with 4 different implementations (minimal, route with map, route with RouteBuilder and Controller). GitHub repo: aspnet-core-benchmark

Updates

• 10/2018: Added performance results for Surface Book 2