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Update metrics.md (#30091) 

* Update metrics.md

* Update metrics.md

* Update metrics.md
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James Newton-King 2023-08-19 04:08:25 +08:00 committed by GitHub
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aspnetcore/log-mon/metrics/metrics.md
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@ -63,8 +63,7 @@ If the [dotnet-counters](/dotnet/core/diagnostics/dotnet-counters) tool isn't in
dotnet tool update -g dotnet-counters
```
While the test app is running, launch [dotnet-counters](/dotnet/core/diagnostics/dotnet-counters).
The following command shows an example of `dotnet-counters` monitoring all metrics from the `Microsoft.AspNetCore.Hosting` meter.
While the test app is running, launch [dotnet-counters](/dotnet/core/diagnostics/dotnet-counters). The following command shows an example of `dotnet-counters` monitoring all metrics from the `Microsoft.AspNetCore.Hosting` meter.
```dotnetcli
dotnet-counters monitor -n WebMetric --counters Microsoft.AspNetCore.Hosting
@ -88,15 +87,7 @@ Press p to pause, r to resume, q to quit.
host=localhost,method=GET,port=5045,protocol=HTTP/1.1,ro 0 12
```
Run `WebMetric>dotnet-counters list` to show all available metrics.
The following command shows the `Microsoft-AspNetCore-Server-Kestrel` meter with the `requests-per-second` and `total-requests` counters.
```dotnetcli
dotnet-counters monitor -n WebMetric --counters Microsoft.AspNetCore.Hosting[requests-per-second,total-requests]
```
For more information, see [dotnet-counters](/dotnet/core/diagnostics/dotnet-counters). To learn more about metrics in .NET, see [built-in metrics](/dotnet/core/diagnostics/available-counters).
For more information, see [dotnet-counters](/dotnet/core/diagnostics/dotnet-counters).
## Create custom metrics
@ -200,7 +191,7 @@ public class BasicTests : IClassFixture<WebApplicationFactory<Program>>
// Assert
Assert.Equal("Hello World!", await response.Content.ReadAsStringAsync());
await collector.WaitForMeasurementsAsync(minCount: 1);
await collector.WaitForMeasurementsAsync(minCount: 1).WaitAsync(TimeSpan.FromSeconds(5));
Assert.Collection(collector.GetMeasurementSnapshot(),
measurement =>
{
@ -219,7 +210,7 @@ The proceeding test:
* Requires a package reference to `Microsoft.Extensions.Telemetry.Testing`.
* The `MetricCollector` is created using the web app's `IMeterFactory`. This allows the collector to only report metrics values recorded by test.
* Includes the meter name, `Microsoft.AspNetCore.Hosting`, and counter name, `http.server.request.duration` to collect.
* Makes a HTTP request to the app web.
* Makes an HTTP request to the web app.
* Asserts the test using results from the metrics collector.
## ASP.NET Core meters and counters