package main
import (
"fmt"
"time"
)
func test() {
time.Sleep(time.Millisecond * 100)
}
func main() {
now := time.Now()
fmt.Println(now.Format("2006/01/02 15:04:05"))
start := time.Now().UnixNano()
test()
end := time.Now().UnixNano()
fmt.Printf("cost:%d ", (end-start)/1000)
}