Create a CPU profile using Node.js and v8-profiler

run-server.js

var profiler = require('v8-profiler');
var fs = require('fs');
var processStartTime = new Date().getTime();

profiler.startProfiling();

while (true) {
  
    rt.renderFrame(done);

    if (new Date().getTime() - processStartTime > 60000) {
        console.log(`frames,${frames}`);
        profiler.stopProfiling().export(function(error, result) {
            fs.writeFileSync('profile.cpuprofile', result);
            process.exit();
        });
    }
}