Is Thread.Sleep(Timeout.Infinite); more efficient than while(true){}?

Question

I have a console application that I would like to keep open all of the time while still listening in to events. I have tested Thread.Sleep(Timeout.Infinite); an

Answer 1

Yes, while(true) consumes CPU while sleep() works in a smarter way: The sleep() function puts the current execution context to sleep; it does this by calling a syscall to invoke the kernel sleep function which atomically
(a) sets a wake-up timer
(b) marks the current process as sleeping
(c) waits until the wakeup-timer fires or an interrupt occurs

If you call sleep(), the CPU can do other work.

That's one reason why sleep() is useful.

A useful link - Be careful when using Sleep