cpuid

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  "build_dependencies": [
    "go"
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  "deprecated": 0,
  "deprecation_reason": null,
  "desc": "CPU feature identification for Go",
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  "enrichment_fetched_at": "2026-06-20T23:36:40+00:00",
  "first_seen": "2026-06-20T23:34:18+00:00",
  "full_name": "cpuid",
  "github_default_branch": "master",
  "github_last_commit_at": "2026-06-17T09:04:29Z",
  "github_readme_excerpt": "# cpuid\nPackage cpuid provides information about the CPU running the current program.\n\nCPU features are detected on startup, and kept for fast access through the life of the application.\nCurrently x86 / x64 (AMD64/i386), ARM (ARM64), and RISC-V (RV64) are supported, and no external C (cgo) code is used, which should make the library very easy to use.\n\nYou can access the CPU information by accessing the shared CPU variable of the cpuid library.\n\nPackage home: https://github.com/klauspost/cpuid\n\n[![PkgGoDev](https://pkg.go.dev/badge/github.com/klauspost/cpuid)](https://pkg.go.dev/github.com/klauspost/cpuid/v2)\n[![Go](https://github.com/klauspost/cpuid/actions/workflows/go.yml/badge.svg)](https://github.com/klauspost/cpuid/actions/workflows/go.yml)\n\n## installing\n\n`go get -u github.com/klauspost/cpuid/v2` using modules.\nDrop `v2` for others.\n\nInstalling binary:\n\n`go install github.com/klauspost/cpuid/v2/cmd/cpuid@latest`\n\nOr download binaries from release page: https://github.com/klauspost/cpuid/releases\n\n### Homebrew\n\nFor macOS/Linux users, you can install via [brew](https://brew.sh/)\n\n```sh\n$ brew install cpuid\n```\n\n## example\n\n```Go\npackage main\n\nimport (\n\t\"fmt\"\n\t\"strings\"\n\n\t. \"github.com/klauspost/cpuid/v2\"\n)\n\nfunc main() {\n\t// Print basic CPU information:\n\tfmt.Println(\"Name:\", CPU.BrandName)\n\tfmt.Println(\"PhysicalCores:\", CPU.PhysicalCores)\n\tfmt.Println(\"ThreadsPerCore:\", CPU.ThreadsPerCore)\n\tfmt.Println(\"LogicalCores:\", CPU.LogicalCores)\n\tfmt.Println(\"Family\", CPU.Family, \"Model:\", CPU.Model, \"Vendor ID:\", CPU.VendorID)\n\tfmt.Println(\"Features:\", strings.Join(CPU.FeatureSet(), \",\"))\n\tfmt.Println(\"Cacheline bytes:\", CPU.CacheLine)\n\tfmt.Println(\"L1 Data Cache:\", CPU.Cache.L1D, \"bytes\")\n\tfmt.Println(\"L1 Instruction Cache:\", CPU.Cache.L1I, \"bytes\")\n\tfmt.Println(\"L2 Cache:\", CPU.Cache.L2, \"bytes\")\n\tfmt.Println(\"L3 Cache:\", CPU.Cache.L3, \"bytes\")\n\tfmt.Println(\"Frequency\", CPU.Hz, \"hz\")\n\n\t// Test if we have these specific features:\n\tif CPU.Supports(SSE, SSE2) {\n\t\tfmt.Pri",
  "github_repo": "klauspost/cpuid",
  "github_stars": 1190,
  "github_topics": [],
  "homepage": "https://github.com/klauspost/cpuid",
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  "homepage_og_image": null,
  "homepage_title": null,
  "installs_30d": 19,
  "installs_365d": 490,
  "installs_90d": 53,
  "keg_only": 0,
  "keg_only_reason": null,
  "last_seen": "2026-06-20T23:34:18+00:00",
  "license": "MIT",
  "llm_generated_at": null,
  "llm_model": null,
  "name": "cpuid",
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  "one_liner": null,
  "optional_dependencies": [],
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  "raw_hash": "fff7b05dcc1d68d7",
  "recommended_dependencies": [],
  "revision": 0,
  "ruby_source_path": "Formula/c/cpuid.rb",
  "tap": "homebrew/core",
  "test_dependencies": [],
  "uses_from_macos": [],
  "version_head": "HEAD",
  "version_stable": "2.3.0",
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  "why_use_this": null
}