I have a webpage to optimize. When I enter it, the CPU usage increases drastically. I tried to use Chrome Dev Tools, but profiler 92% of the time is in the (program) line. What could I do to find the culprit of this behavior?

I have a webpage to optimize. When I enter it, the CPU usage increases drastically. I tried to use Chrome Dev Tools, but profiler 92% of the time is in the (program) line. What could I do to find the culprit of this behavior?

• javascript
• profiling
• google-chrome-devtools

2 Answers 2

I've had the same issues before. I don't have a lot of experience using Chrome Dev Tools but here are some useful links:

• Debugging JavaScript - Chrome DevTools - Google Developers
• JavaScript Profiling With The Chrome Developer Tools | Smashing Coding
• Chrome DevTools - Google Developers

Please use Timeline panel. It will show you what the page does. It shows information about javascript calls, gc, layout, paint etc.

https://developers.google./chrome-developer-tools/docs/timeline