Profiling

Sysprof

Typical profiling of JavaScript code is performed by passing the --gjs and --no-perf options:

$ sysprof-cli --gjs --no-perf -- gjs script.js

This will result in a capture.syscap file in the current directory, which can then be reviewed in the sysprof GUI:

$ sysprof capture.syscap

Other flags can also be combined with --gjs when appropriate:

sysprof-cli --gjs --gtk -- gjs gtk.js