# StartCollectingMetrics()

> Begin recording metrics data for AsyncReadManager read operations.

## Definition

* **Type:** Method
* **Namespace:** [Unity.IO.LowLevel.Unsafe](/engine/6000.0/script-reference/unity/io/lowlevel/unsafe.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public static void StartCollectingMetrics()
```

### Remarks

Stop collection with [AsyncReadManagerMetrics.StopCollectingMetrics](/engine/6000.0/script-reference/unity/io/lowlevel/unsafe/asyncreadmanagermetrics/stopcollectingmetrics.md). You can also enable metrics collection when your program first launches using the command-line argument "-enable-file-read-metrics". Additional Resources:: [AsyncReadManagerMetrics.IsEnabled](/engine/6000.0/script-reference/unity/io/lowlevel/unsafe/asyncreadmanagermetrics/isenabled.md)