linux-perf

linux-perf is a skill for Claude Code, Codex from intel/intel-performance-skills. It costs 202 tokens per session (2,918 once invoked), scanned B, original, no licence file.

A guide to using perf, a Linux tool that measures where programs spend time and how the processor handles their work. It covers CPU usage, cache misses, branch prediction, and contention between processor cores.

In plain words
What is it for?
Use it to find CPU-heavy functions and source lines, investigate cache and core-sharing problems, and identify opportunities for SIMD or accumulator optimizations.
Why use it?
It helps replace guesswork with measurements when a Linux program runs too slowly or uses hardware inefficiently.

Skill for Claude CodeCodex ✓ vendor

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to find CPU-heavy functions and source lines, investigate cache and core-sharing problems, and identify opportunities for SIMD or accumulator optimizations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/intel/intel-performance-skills/linux-perf
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add intel/intel-performance-skills --skill linux-perf
Clone the repo
git clone --depth 1 https://github.com/intel/intel-performance-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for linux-perf

README.md
[![agentmods](https://agentmods.dev/badge/skills/intel/intel-performance-skills/linux-perf/github.svg)](https://agentmods.dev/skills/intel/intel-performance-skills/linux-perf)
Your own site
<a href="https://agentmods.dev/skills/intel/intel-performance-skills/linux-perf"><img src="https://agentmods.dev/badge/skills/intel/intel-performance-skills/linux-perf/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for linux-perf

Your own site · 80×15
<a href="https://agentmods.dev/skills/intel/intel-performance-skills/linux-perf"><img src="https://agentmods.dev/badge/skills/intel/intel-performance-skills/linux-perf.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 202 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,918 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00202 $0.02918
Opus 5.5 $0.00081 $0.01167
Sonnet 5.5 $0.00040 $0.00584
Haiku 4.5 $0.00020 $0.00292

Measured 1mo ago against content hash 7ee3edf81a45, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

linux-perf scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

The scan reads SKILL.md. This mod also ships 2 executable files (tools/branchprob.py, tools/gccbranchprob.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

echo 0 | sudo tee /proc/sys/kernel/perf_event_paranoid
skills/linux-perf/SKILL.md · 255 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 1mo ago First seen · 255 lines · 202 tokens per session scan B 7ee3edf81a45

Subscribe to this mod's changes

linux-perf is a skill published in the GitHub repository intel/intel-performance-skills (342 stars, last pushed 19d ago), with no licence file. It adds 202 tokens to every session and 2,918 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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