Componentpedia / Listings / num_cpus

Last update: 25/04/2026

num_cpus

Get the number of CPUs in Rust

Latest version: 1.17.0 registry icon
Maintenance score
19
Safety score
100
Popularity score
84
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Security
  Vulnerabilities
Version Suggest Low Medium High Critical
1.17.0 0 0 0 0 0
1.16.0 0 0 0 0 0
1.15.0 0 0 0 0 0
1.14.0 0 0 0 0 0
1.13.1 0 0 0 0 0
1.13.0 0 0 0 0 0
1.12.0 0 0 0 0 0
1.11.1 0 0 0 0 0
1.11.0 0 0 0 0 0
1.10.1 0 0 0 0 0
1.10.0 0 0 0 0 0
1.9.0 0 0 0 0 0
1.8.0 0 0 0 0 0
1.7.0 0 0 0 0 0
1.6.2 0 0 0 0 0
1.6.1 0 0 0 0 0
1.6.0 0 0 0 0 0
1.5.1 0 0 0 0 0
1.5.0 0 0 0 0 0
1.4.0 0 0 0 0 0
1.3.0 0 0 0 0 0
1.2.1 0 0 0 0 0
1.2.0 0 0 0 0 0
1.1.0 0 0 0 0 0
1.0.0 0 0 0 0 0
0.2.13 0 0 0 0 0
0.2.12 0 0 0 0 0
0.2.11 0 0 0 0 0
0.2.10 0 0 0 0 0
0.2.9 0 0 0 0 0
0.2.8 0 0 0 0 0
0.2.7 0 0 0 0 0
0.2.6 0 0 0 0 0
0.2.5 0 0 0 0 0
0.2.4 0 0 0 0 0
0.2.3 0 0 0 0 0
0.2.2 0 0 0 0 0
0.2.1 0 0 0 0 0
0.2.0 0 0 0 0 0
0.1.0 0 0 0 0 0

Stability
Latest release:

1.17.0 - This version may not be safe as it has not been updated for a long time. Find out if your coding project uses this component and get notified of any reported security vulnerabilities with Meterian-X Open Source Security Platform

Licensing

Maintain your licence declarations and avoid unwanted licences to protect your IP the way you intended.

MIT   -   MIT License

Not a wildcard

Not proprietary

OSI Compliant

Apache-2.0   -   Apache License 2.0

Not a wildcard

Not proprietary

OSI Compliant

num_cpus

crates.io CI Status

Count the number of CPUs on the current machine.

Usage

Add to Cargo.toml:

[dependencies]
num_cpus = "1.0"

In your main.rs or lib.rs:

extern crate num_cpus;

// count logical cores this process could try to use
let num = num_cpus::get();