main.rs

use std::{env, thread::sleep, time::Duration};

fn main() {
    let flag = env::args().nth(1).unwrap_or("".to_owned());
    match flag.as_str() {
        "" => {
            println!("using vec![vec![u32; 14]; 1<<30]");
            let _cache = vec![vec![0u32; 14]; 1 << 30];
            println!("hold 10s");
            sleep(Duration::from_secs(10));
        }
        _ => {
            println!("using vec![u32; 14<<30]");
            let mut cache = vec![0u32; 14 << 30];
            for i in 0..cache.len() {
                cache[i] = i as u32;
            }

            println!("hold 10s");
            sleep(Duration::from_secs(10));
        }
    }
}