---
title: qos
framework: dispatch
role: symbol
role_heading: Instance Property
path: dispatch/dispatchqueue/qos
---

# qos

The quality-of-service level assgined to the queue.

## Declaration

```swift
var qos: DispatchQoS { get }
```

## See Also

### Managing Queue Attributes

- [label](dispatch/dispatchqueue/label.md)
- [setTarget(queue:)](dispatch/dispatchobject/settarget(queue:).md)