macOS
brew install libcpucycleslocal Homebrew formula metadata
brew / 順位 10416
libcpucycles のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。
インストール
brew install libcpucycleslocal Homebrew formula metadata
sudo dnf install libcpucyclesFedora Rawhide package metadata · libcpucycles · ソース: dl.fedoraproject.org
nix profile install nixpkgs#libcpucyclesnixpkgs package indexes · pkgs/by-name/li/libcpucycles/package.nix · ソース: api.github.com
sudo apt install cpucyclesDebian stable package indexes · cpucycles · ソース: deb.debian.org
概要
Microlibrary for counting CPU cycles
履歴
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.
セキュリティ状態
library-like package without higher-risk signals.
リスク グリーン · 信頼度 低 · appliance
エージェントに無人実行させる前に、このツールが平文の認証情報を読むか、リモート状態を書き込むか、成果物を公開するか、プラグインを起動するかを確認してください。
local files
These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.
Config paths the tool may read or write during local use.
/etc/cpucyclespersecond実行可能ファイル
| コマンド | 種類 | 公開範囲 | メモ |
|---|---|---|---|
cpucycles-info | cli | グローバル実行可能ファイル | |
cpucycles-open | cli | グローバル実行可能ファイル |
鮮度
これらの信号は、ページ生成時期、パッケージマネージャの活動、上流リリース比較を分けて示します。バージョン遅れは、証拠 URL と比較可能なバージョンがある場合だけ警告されます。
インストールメタデータ
| パッケージキー | brew:libcpucycles |
|---|---|
| バージョン | 20260901 |
| パッケージマネージャ | Homebrew |
| パッケージマネージャページ | https://formulae.brew.sh/formula/libcpucycles |
| ホームページ | https://cpucycles.cr.yp.to/ |
| 上流ドキュメント | https://cpucycles.cr.yp.to/ |
| ライセンス | LicenseRef-Homebrew-public-domain OR CC0-1.0 OR 0BSD OR MIT-0 OR MIT |
| ソースアーカイブ | https://cpucycles.cr.yp.to/libcpucycles-20260625.tar.gz |
| Bottle | 利用可能 (対象 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | 未定義 |
| サービス | 宣言なし |
レジストリ情報
| 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 |
|
ソースデータベース一致
一致は外部パッケージマネージャインデックスから取得され、ローカルの Automic Vault パッケージリンクとは分けて表示されます。
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 20260625-2.fc45
Library for counting CPU cycles
sudo dnf install libcpucycleslibcpucycles-devel 20260625-2.fc45
Development files for libcpucycles
sudo dnf install libcpucycles-devellibcpucycles-static 20260625-2.fc45
Static version of the libcpucycles library
sudo dnf install libcpucycles-staticソース経路
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View the package source record on GitHub.