React Native JavaScript Thread Instrument

October 31, 2018 ยท View on GitHub

The JavaScript Thread instrument captures information about the CPU load of your app's JavaScript thread.

JavaScript Thread

Discussion

Use the information captured by this instrument to inspect your app's general JavaScript thread CPU usage, as well as debug CPU peaks and high usage.

Detail Pane

The detail pane includes your app's JavaScript thread CPU usage at the time of the sample.

JavaScript Thread Detail Pane

Samples will be highlighted in red (warning 3) when:

  • The JavaScript thread CPU load is above 90%

Samples will be highlighted in orange (warning 2) when:

  • The JavaScript thread CPU load is above 80%

Samples will be highlighted in yellow (warning 1) when:

  • The JavaScript thread CPU load is above 70%