WorkerGlobalScope: performance property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

Note: This feature is only available in Web Workers.

The performance property of the WorkerGlobalScope interface returns a Performance object, which can be used to gather performance information about code running in the worker's scope.

Performance entries are per context. If you create a mark on a worker thread, you will not see it in the main thread or any other workers.

Note that only the following performance interfaces are available in worker contexts:

Value

A Performance object offering access to performance and timing-related information for the context it is called on.

Specifications

Specification
High Resolution Time
# the-performance-attribute

Browser compatibility

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desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
performance
Available in workers

Legend

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Full support
Full support
Partial support
Partial support
Has more compatibility info.

See also