目录

一、用Rust获取CPU、内存、硬盘的信息

二、知识点 systemstat

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一、用Rust获取CPU、内存、硬盘的信息

        首先，需要添加systemstat库到Cargo.toml文件：

[dependencies]
systemstat = "0.2.3"

        在Rust代码中使用它： 

extern crate systemstat;use std::io;
use std::thread;
use std::time::Duration;
use systemstat::{System, Platform, saturating_sub_bytes};fn main() -> io::Result<()> {let sys = System::new();match sys.cpu_load_aggregate() {Ok(cpu)=> {println!("\nMeasuring CPU load...");thread::sleep(Duration::from_secs(5));let cpu = cpu.done().unwrap();println!("CPU load: {}% user, {}% nice, {}% system, {}% intr, {}% idle ",cpu.user * 100.0, cpu.nice * 100.0, cpu.system * 100.0, cpu.interrupt * 100.0, cpu.idle * 100.0);},Err(x) => println!("\nCPU load: error: {}", x)}match sys.memory() {Ok(mem) => println!("\nMemory: {} used / {} ({} bytes) total ({:?})", saturating_sub_bytes(mem.total, mem.free), mem.total, mem.total.as_u64(), mem.platform_memory),Err(x) => println!("\nMemory: error: {}", x)}match sys.mounts() {Ok(mounts) => {println!("\nMounts:");for mount in mounts.iter() {println!("{} ---{}---> {} (available {} of {})",mount.fs_mounted_from, mount.fs_type, mount.fs_mounted_on, mount.avail, mount.total);}}Err(x) => println!("\nMounts: error: {}", x)}Ok(())
}

显示结果：

二、知识点 systemstat

systemstat - RustThis library provides a way to access system information such as CPU load, mounted filesystems, network interfaces, etc.https://docs.rs/systemstat/latest/systemstat/

GitHub - valpackett/systemstat: Rust library for getting system information | also on https://codeberg.org/valpackett/systemstat

systemstat

A Rust library for getting system information/statistics:

• CPU load
• load average
• memory usage
• uptime / boot time
• battery life
• filesystem mounts (and disk usage)
• disk I/O statistics
• network interfaces
• network traffic statistics
• CPU temperature

Unlike sys-info-rs, this one is written purely in Rust.

Supported platforms (roughly ordered by completeness of support):

• FreeBSD
• Linux
• OpenBSD
• Windows
• macOS
• NetBSD
• more coming soon