Cargo.toml

[package]
name = "downhill"
version = "0.1.0"
authors = ["Alex Roper <alex@aroper.net>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
sled = "0.32.0"

main.rs

use std::path::PathBuf;

fn main() {
    if true {
        let db = sled::Config::new().cache_capacity(1024 * 1024 * 1024).path(PathBuf::from("/tmp/bm4p")).open().unwrap();
        let inodes = db.open_tree(b"dirs2").unwrap();
        let mut a: u64 = 0;
        let mut b: u128 = 0;
        let mut buf = [0; 24];
        for i in 0..120000 {
            a = a.overflowing_add(127).0;
            b = b.overflowing_mul(127).0;
            buf[..8].copy_from_slice(&a.to_be_bytes());
            buf[8..].copy_from_slice(&b.to_be_bytes());
            let i: u64 = i;
            inodes.insert(&i.to_be_bytes(), buf.to_vec()).unwrap();
        }
    }

    println!("All database memory freed. Sleeping for a long time.");
    std::thread::sleep_ms(86400 * 1000);
}