Kestrel vs Iris new benchmarks, as you asked for 👍

Former-commit-id: d8979e55679bbb586dd79a81a43e1c29082ad9c2

_benchmarks/netcore/Startup.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.AspNetCore.Routing;
+using Microsoft.AspNetCore.Http;
+
+namespace netcore
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddRouting();
+        }
+
+        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
+        {
+            var routeBuilder = new RouteBuilder(app);
+            routeBuilder.MapGet("api/values/{id}", context =>{
+                return context.Response.WriteAsync("value");
+            });
+            var routes = routeBuilder.Build();
+            app.UseRouter(routes);
+        }
+    }
+}