node js CPU profiling using chrome! Learn to attach the chrome debugger to profile the CPU usage.

node js CPU profiling using chrome! Learn to attach the chrome debugger to a nodejs app to profile the CPU usage.
This technique can be used with any nodejs application
Sample application: expressjs.com/en/starter/hell...
Chapters:
0:00 Introduction to sample application
0:53 Attach chrome debugger
1:44 CPU profiler
3:10 Chart profiler
7:18 Heavy (bottom up) list
9:41 Tree (top down) list
12:10 Conclusion
Attributions
music : www.bensounds.com, audionautix.com
images : www.pexels.com
Links
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/ highvoice.man.5
/ highvoiceman

[@maiaayaaoo7]

Thank you for the video

[@jonassteinberg9598]

an immensely useful introduction by someone who clearly has a wealth of experience using the tool at work. well done, sire and thank you.

[@dddanielsr]

Thanks man!!!!

[@elliot_yoyo]

Your videos are super interesting, you don't just show the tool but also explain what it does and how it works. Thx a lot !

[@teelo9006]

Great video. Thank you!

[@ebukaume]

Very straight to the point and really helpful. I was looking for a guide on how to view the recorded data as graph when I landed here. Your tips really helped too. Thanks!

[@HighVoiceComputing]

thanks for the kind words. Let me see if I am able to view the recorded data as a graph

[@ebukaume]

@@HighVoiceComputing thanks! Could you please let me know afterwards?

[@jonassteinberg9598]

profiling and tracing nodejs in *datadog* would be amazing friend.

[@leepoking]

Awesome, thanks for the amazing video! Wondering if you can make a video about which is the best profiler software/plugin/application in your opinion :D Also would like to know if there any javascript profiler that I can use in terminal so that I can use keyboard shortcut to browse around easily! (like k9s for kubernetes) Thanks again.

[@HighVoiceComputing]

interestingly, i have such a video which I can publish next week. The javascript profiler can be used on the command line, however , it creates a file that is hard to read. I use visual studio code with a plugin that transforms the file to make it easier to read. Let me see if i can publish that video soon.

[@t1279k]

How do profile in production where nodejs runs in a container?

[@HighVoiceComputing]

if you are able to docker pull the image to a local machine , you can change the entrypoint to run node with --inspect. You can also expose the port with docker run, so you can use chrome to connect to the websocket being opened.