schedcp: Instructions file for Claude Code

CLAUDE.md

schedcp CLAUDE.md is an instructions file for Claude Code from eunomia-bpf/schedcp. It costs 2,589 tokens per session, scanned B, original, MIT.

A project guide for schedcp, a Linux project that tests ways to improve how the operating system assigns processor time to programs. It covers C and Rust schedulers, benchmarking tools, and an MCP server, a program that lets AI tools interact with it.

In plain words
What is it for?
Use it to build the MCP server and command-line tool, compile C or Rust schedulers, build supporting tools, generate documentation, and remove build files.
Why use it?
It puts the main build and test commands in one place, so developers can compile the control tools, schedulers, and documentation without guessing the project structure.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is eunomia-bpf/schedcp's own configuration. It tells Claude Code how to work on schedcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything schedcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to eunomia-bpf/schedcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/eunomia-bpf/schedcp/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/eunomia-bpf/schedcp

Made for: Claude Code.

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Per session 2,589 This file is loaded in full into every session.
When invoked 2,589 The same file — it is already loaded in full.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.02589 $0.02589
Opus 5 $0.01295 $0.01295
Sonnet 5 $0.00518 $0.00518
Haiku 4.5 $0.00259 $0.00259

Measured 9d ago against content hash b1c6ee83e2b5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

schedcp CLAUDE.md 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 9d ago.

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.

- Root privileges required for scheduler loading (configure sudo access)
CLAUDE.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

schedcp is a Linux scheduler optimization project that uses the sched-ext (scx) framework to implement and test various BPF-based kernel schedulers. The project includes multiple scheduler implementations in both C and Rust, along with benchmarking tools, workloads, and an MCP (Model Context Protocol) server for AI-assisted scheduler management.

Essential Build Commands

Building the MCP Server and CLI

# Build the schedcp MCP server and CLI tool
cd mcp
cargo build --release

# Binaries will be available at:
# - mcp/target/release/schedcp (MCP server)
# - mcp/target/release/schedcp-cli (CLI tool)

Building Schedulers

# Install dependencies first (one-time setup)
cd scheduler
make deps

# Build all schedulers (C and Rust) - outputs to sche_bin/
make

# Build specific types
make build-c        # Build only C schedulers
make build-rust     # Build only Rust schedulers
make build-tools    # Build tools (scx_loader, scxctl, scxtop) - outputs to tools/

# Generate scheduler documentation
make doc

# Clean build artifacts
make clean

# Update scx submodule
make update

# Install schedulers to ~/.schedcp/scxbin/
make install

Running Tests

# Unit tests for sched-ext framework
cd scheduler/scx
meson setup build
meson test -v -C build

# Run specific benchmark workloads
python workloads/basic/scheduler_test/schbench_bench_start.py
python workloads/llama.cpp/llamacpp_bench_start.py
python workloads/cxl-micro/cxl_micro_bench_start.py

High-Level Architecture

Core Components Integration

MCP Server Architecture: The heart of the project is the MCP server (mcp/src/) which provides AI-assisted scheduler management. Key integration points:

  • scheduler_manager.rs: Manages the lifecycle of kernel schedulers, interfaces with embedded scheduler binaries, handles both built-in and custom schedulers
  • scheduler_generator.rs: Creates, compiles, and verifies custom BPF schedulers from source code (private module accessed through manager)
  • system_monitor.rs: Collects real-time CPU, memory, and scheduler metrics from /proc for performance analysis
  • workload_profile.rs: Creates natural language workload descriptions and tracks performance history across different schedulers
  • storage.rs: Persists workload data in schedcp_workloads.json, enabling learning from past optimizations

Read the full file on GitHub · 253 lines

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. 9d ago First seen · 253 lines · 2,589 tokens per session scan B b1c6ee83e2b5

Subscribe to this mod's changes

schedcp CLAUDE.md is an instructions file published in the GitHub repository eunomia-bpf/schedcp (116 stars, last pushed 6mo ago), licensed MIT. It adds 2,589 tokens to every session, about $0.0129 per session on Opus 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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