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# MXDiskWriteExceptionDiagnostic

An object representing a diagnostic report for a disk write exception.

```
class MXDiskWriteExceptionDiagnostic
```

## Overview

A disk write exception occurs when the app writes an excessive amount of data to the disk.

## Topics

### Reading total disk writes

[`totalWritesCaused`](/documentation/MetricKit/MXDiskWriteExceptionDiagnostic/totalWritesCaused)

The total amount of data written to disk or other long-term storage during the disk write exception.

### Viewing the call stack

[`callStackTree`](/documentation/MetricKit/MXDiskWriteExceptionDiagnostic/callStackTree)

The call stack for the disk write exception.


---

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