如何启用 dotnet 指标收集

Question

正在应用的示例位于 https://learn.microsoft.com/en-us/dotnet/core/diagnostics/metrics-collection 但是，这些指标在 dotnet 计数器下不可见。

如何查看指标？

程序编译时

using System;
using System.Collections.Generic;
using System.Diagnostics.Metrics;
using System.Threading;

namespace ConsoleApp7
{
    internal   class Program
    {
        static  void Main(string[] args)
        {
            Meter s_meter = new("HatCo.HatStore", "1.0.0");
             Counter<int> s_hatsSold = s_meter.CreateCounter<int>("hats-sold");


            using MeterListener meterListener = new();
                meterListener.InstrumentPublished = (instrument, listener) =>
                {
                    if (instrument.Meter.Name is "HatCo.HatStore")
                    {
                        listener.EnableMeasurementEvents(instrument);
                    }
                };

                meterListener.SetMeasurementEventCallback<int>(OnMeasurementRecorded);
                // Start the meterListener, enabling InstrumentPublished callbacks.
                meterListener.Start();

                var rand = Random.Shared;
                Console.WriteLine("Press any key to exit");
                while (!Console.KeyAvailable)
                {
                    //// Simulate hat selling transactions.
                    Thread.Sleep(rand.Next(100, 2500));
                    s_hatsSold.Add(rand.Next(0, 1000));
                }
           

            static void OnMeasurementRecorded<T>(
                Instrument instrument,
                T measurement,
                ReadOnlySpan<KeyValuePair<string, object?>> tags,
                object? state)
            {
                Console.WriteLine($"{instrument.Name} recorded measurement {measurement}");
            }
        }
    }
}

hte程序的输出窗口显示

hats-sold recorded measurement 253
hats-sold recorded measurement 168
hats-sold recorded measurement 473
hats-sold recorded measurement 790

但是，如输出所示，ditbet 计数器无法找到它

C:\Users\me>dotnet-counters monitor -n metric-instr
There is no active process with the given name: metric-instr

Answer 1

感谢@alexanderBurov，如上所述 dotnet-计数器监视器-n ConsoleApp7