Is setInterval CPU intensive?

Question

I read somewhere that setInterval is CPU intensive. I created a script that uses setInterval and monitored the CPU usage but didn\'t notice a change. I want to know if there

Answer 1

Function time > interval time is bad, you can't know when cpu hiccups or is slow one and it stacks on top of ongoing functions until pc freezes. Use settimeout or even better, process.nextick using a callback inside a settimeout.