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Does recursive process.nexttick use the use of other processes or threads?

Technically, when we execute the following code (recursive process.nexttick), the processor load will be 100% or almost. The question is that I start the machine with one processor and another process of the HTTP node server works there, how does it affect it?

Does the thread create a recursive process.nexttick that allows the HTTP server to work at all?

If we have two threads of a recursive process. Unlike, they both get a 50% stake?

Since I do not know which machine with one core can not try. And since in this case my understanding of the separation of time between processors between threads is limited, I am not trying to use it with machines with 4 processor cores.

function interval(){
  process.nextTick(function(){
    someSmallSyncCode();
    interval();  
  })
}

thank

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function interval(){
  process.nextTick(doIntervalStuff) 
}

function doIntervalStuff() {
  someSmallSyncCode();
  interval();
}

http.createServer(function (req, res) {
 doHTTPStuff()
}).listen(1337, "127.0.0.1");

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