---
title: throughput
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/progress/throughput
---

# throughput

A value that represents the speed of data processing, in bytes per second.

## Declaration

```swift
var throughput: Int? { get set }
```

## Discussion

Discussion If present, Progress presents additional information in its localized description by setting a value in the userInfo dictionary.

## See Also

### Inspecting Progress Information

- [kind](foundation/progress/kind.md)
- [estimatedTimeRemaining](foundation/progress/estimatedtimeremaining.md)
- [setUserInfoObject(_:forKey:)](foundation/progress/setuserinfoobject(_:forkey:).md)
- [userInfo](foundation/progress/userinfo.md)
- [ProgressKind](foundation/progresskind.md)
- [ProgressUserInfoKey](foundation/progressuserinfokey.md)