macOS
brew install libcpucycleslocal Homebrew formula metadata
brew
Consultez les chemins d'installation, exécutables, métadonnées et notes de sécurité de libcpucycles pour les workflows d'agents IA.
installation
brew install libcpucycleslocal Homebrew formula metadata
sudo dnf install libcpucyclesFedora Rawhide package metadata · libcpucycles · Source: dl.fedoraproject.org
nix profile install nixpkgs#libcpucyclesnixpkgs package indexes · pkgs/by-name/li/libcpucycles/package.nix · Source: api.github.com
sudo apt install cpucyclesDebian stable package indexes · cpucycles · Source: deb.debian.org
aperçu
Microlibrary for counting CPU cycles
historique
libcpucycles is a small timing library for counting CPU cycles across multiple CPU and operating-system counter mechanisms. It comes from the cr.yp.to ecosystem associated with Daniel J. Bernstein's performance-oriented cryptographic and systems software.
The official introduction describes libcpucycles as a microlibrary for cycle counting, with a simple API: include `cpucycles.h`, call `cpucycles()`, and link with `-lcpucycles`. The project abstracts machine-level counters such as amd64 TSC/PMC, ARM counters, RISC-V counters, and OS fallbacks such as `mach_absolute_time`, `perf_event`, `CLOCK_MONOTONIC`, and `gettimeofday`.
The release notes visible in the 20250925 documentation show active portability work after the early 2023 tarballs, including s390x counter support, FreeBSD support, arm32-1176 support, a `cpucycles-info` man page, and macOS build fixes.
Adoption is concentrated among developers who need reproducible low-overhead timing for cryptography, benchmarking, and systems tuning. Its appearance in Homebrew, Debian, Ubuntu, Fedora-family packages, and Nix reflects a package-manager role as a tiny measurement primitive rather than an end-user application.
Programmers use libcpucycles when they want an architecture-aware cycle counter without writing per-platform assembly and fallback code. Package users also get tools such as `cpucycles-info` and `cpucycles-open`, which help inspect available counters and support benchmarking workflows.
libcpucycles is package-nerd interesting because it packages the messy hardware reality of cycle counters into a minimal library. It is deliberately small, but its value is in the portability table: one dependency handles CPU families and OS timing APIs that would otherwise become build-system conditionals in every benchmark.
posture de sécurité
library-like package without higher-risk signals.
risque vert · confiance faible · appliance
Avant une utilisation sans surveillance par un agent, vérifiez si l'outil lit des identifiants en clair, écrit un état distant, publie des artefacts ou lance des plugins.
exécutables
| Commande | Type | Exposition | Note |
|---|---|---|---|
cpucycles-info | cli | exécutable global | |
cpucycles-open | cli | exécutable global |
fraîcheur
Ces signaux séparent l'âge de génération de la page, l'activité du gestionnaire de paquets et la comparaison avec les versions amont. Un retard de version n'est signalé que lorsqu'une URL de preuve et des versions comparables sont présentes.
métadonnées d'installation
| Clé du paquet | brew:libcpucycles |
|---|---|
| Version | 20260625 |
| Gestionnaire de paquets | Homebrew |
| Page du gestionnaire de paquets | https://formulae.brew.sh/formula/libcpucycles |
| Page d'accueil | https://cpucycles.cr.yp.to/ |
| Docs amont | https://cpucycles.cr.yp.to/ |
| Licence | LicenseRef-Homebrew-public-domain OR CC0-1.0 OR 0BSD OR MIT-0 OR MIT |
| Archive source | https://cpucycles.cr.yp.to/libcpucycles-20260625.tar.gz |
| Dernière mise à jour | 2026-06-25T22:50:15Z |
| Pulse | updated |
| Bouteille | disponible (sur arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| post-install Homebrew | non défini |
| Service | aucun déclaré |
faits du registre
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | libcpucycles |
| Version Scheme | 0 |
| Revision | 0 |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
correspondances dans les bases sources
Les correspondances proviennent d’index externes de gestionnaires de paquets et restent séparées des liens de paquets Automic Vault locaux.
cpucycles 0~20240318-2
command-line tool for counting CPU cycles (libcpucycles)
sudo apt install cpucycleslibcpucycles-dev 0~20240318-2
library for counting CPU cycles - development files
sudo apt install libcpucycles-devlibcpucycles1 0~20240318-2
library for counting CPU cycles
sudo apt install libcpucycles1libcpucycles
nix profile install nixpkgs#libcpucyclescpucycles 0~20240114-1
command-line tool for counting CPU cycles (libcpucycles)
sudo apt install cpucycleslibcpucycles-dev 0~20240114-1
library for counting CPU cycles - development files
sudo apt install libcpucycles-devlibcpucycles1 0~20240114-1
library for counting CPU cycles
sudo apt install libcpucycles1libcpucycles 20260105-1.fc44
Library for counting CPU cycles
sudo dnf install libcpucycleslibcpucycles-devel 20260105-1.fc44
Development files for libcpucycles
sudo dnf install libcpucycles-devellibcpucycles-static 20260105-1.fc44
Static version of the libcpucycles library
sudo dnf install libcpucycles-staticpiste source
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View the package source record on GitHub.