Question about timings

[uhdwo]

So my server is running good with 300-400+ daily players on a skyblock

I taking timings and always wanna optimize better. I see in the timings it says "Minecraft::Minecraft Scheduler (SELF)" it takes like 10-15% if not more sometimes

What is that and what can cause it?
plz let me know if you need whole timing, plugins and etc​

 

[novastosha]

Multithreading?
[doublepost=1590871542,1590870561][/doublepost]Because using sleep method on server main thread will keep it down and it will dump so yeh

public class UrClass extends Thread {
    @Override
    public void run() {
        int i = 0;
        while (i <= 10) {
            System.out.println(i);
            i++;
            try{
                sleep(1000);
            }catch (InterruptedException e){
                System.out.println("Second thread is down");
            }
        }
        System.out.println("Thread finished please keep these two lines in the end or remove them");
      
    }

Starting ur thread

        UrClass testing = new UrClass();
        testing.start();