# GetTotalReservedMemoryLong()

> The total memory Unity has reserved.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.Profiling](/engine/6000.0/script-reference/unityengine/profiling.md)
* **Assembly:** UnityEngine.CoreModule

```csharp
public static long GetTotalReservedMemoryLong()
```

### Returns

| Type                                                        | Description                                                                         |
| ----------------------------------------------------------- | ----------------------------------------------------------------------------------- |
| [long](https://learn.microsoft.com/dotnet/api/system.int64) | Memory reserved by Unity in bytes. This returns 0 if the Profiler is not available. |

### Remarks

This function returns the total memory Unity has reserved for current and future allocations. If the reserved memory is fully used, Unity will allocate more memory from the system as required.

### Examples

```csharp
using UnityEngine;
using UnityEngine.Profiling;

public class Example : MonoBehaviour
{
    void Update()
    {
        Debug.Log("Total Reserved memory by Unity: " + Profiler.GetTotalReservedMemoryLong() + "Bytes");
        Debug.Log("- Allocated memory by Unity: " + Profiler.GetTotalAllocatedMemoryLong() + "Bytes");
        Debug.Log("- Reserved but not allocated: " + Profiler.GetTotalUnusedReservedMemoryLong() + "Bytes");
    }
}
```