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Looks like the one built into chrome. You can open your browser and attach a node instance so you can debug and profile it. Here's a basic How-to: * Run node
by hajile 4y ago
Looks like the one built into chrome. You can open your browser and attach a node instance so you can debug and profile it.
Here's a basic How-to:
* Run node with `node --inspect <file>`
* Open Chrome and go to `chrome://inspect`
* After it finds your target, click the inspect button to launch a debugger.
- alangpierce 4y agoIt looks to me like the profile viewer is actually speedscope ( https://www.speedscope.app/ https://www.speedscope.app/ ). I find it nicer for exploring profiles compared with Chrome's built-in viewer. To use with Node.js profiling, do the `node --inspect` and `chrome://inspect` steps, then save the profile as a .cpuprofile file and drag that file into speedscope. Another thing I've found useful is programmatically starting/stopping the profiler using `console.profile()` and `console.profileEnd()`.
- jansan 4y agoThat is a great tool. Also, I learned about perfetto the first time today, after doing Javascript profiling for a few years.