result.md

environment
OS	ArchLinux
Mem	16GB
CPU	intel Core i7 8565U

$ time node hoge
hello
!
world
node hoge  3.87s user 0.26s system 120% cpu 3.422 total

settimeout.js

async function f() {
    const p = new Promise(resolve => setTimeout(() => {
        console.log("hello");
        resolve();
    }, 2000));
    for(let x = 0; x < 5000000; x++) {
        setTimeout(() => {}, 10);
    }
    setTimeout(() => console.log("world"), 1000);
    await p;
    console.log("!");
}

f()