run-profiler-from-browser-console.js

(async () => {
    const settings = {
    	features: ['js', 'stackwalk', 'threads', 'leaf', 'tracer'],
      threads: ["GeckoMain"],
    };
    await Services.profiler.StartProfiler(
      settings.entries,
      settings.interval,
      settings.features,
      settings.threads
    );

		await new Promise(r => setTimeout(r, 3000));
		let data = await Services.profiler.getProfileDataAsync();
    Services.profiler.StopProfiler();

		console.log(data);
})();