feat: add codspeed benchmarks for valgrind

[not-matthias]

No description provided.

[codspeed-hq]

CodSpeed Performance Report

Congrats! CodSpeed is installed 🎉

🆕 72 new benchmarks were detected.

You will start to see performance impacts in the reports once the benchmarks are run from your default branch.

Detected benchmarks

• test_valgrind[valgrind-3.25.1, echo Hello, World!, full-no-inline]: 556.2 ms
• test_valgrind[valgrind-3.25.1, echo Hello, World!, full-with-inline]: 723.8 ms
• test_valgrind[valgrind-3.25.1, echo Hello, World!, inline]: 657.8 ms
• test_valgrind[valgrind-3.25.1, echo Hello, World!, no-inline]: 490 ms
• test_valgrind[valgrind-3.25.1, ls bench.py, full-no-inline]: 622.3 ms
• test_valgrind[valgrind-3.25.1, ls bench.py, full-with-inline]: 783 ms
• test_valgrind[valgrind-3.25.1, ls bench.py, inline]: 703.2 ms
• test_valgrind[valgrind-3.25.1, ls bench.py, no-inline]: 537.2 ms
• test_valgrind[valgrind-3.25.1, python3 testdata/test.py, full-no-inline]: 5.8 s
• test_valgrind[valgrind-3.25.1, python3 testdata/test.py, full-with-inline]: 5.4 s
• test_valgrind[valgrind-3.25.1, python3 testdata/test.py, inline]: 3.7 s
• test_valgrind[valgrind-3.25.1, python3 testdata/test.py, no-inline]: 3.5 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 1 --timeout 1s, full-no-inline]: 3.1 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 1 --timeout 1s, full-with-inline]: 3.3 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 1 --timeout 1s, inline]: 2.2 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 1 --timeout 1s, no-inline]: 1.9 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 4 --timeout 1s, full-no-inline]: 3.1 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 4 --timeout 1s, full-with-inline]: 3.4 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 4 --timeout 1s, inline]: 2.2 s
• test_valgrind[valgrind-3.25.1, stress-ng --cpu 4 --timeout 1s, no-inline]: 2 s
• ...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

[Copilot]

Pull Request Overview

This PR adds a benchmarking infrastructure for Valgrind using pytest-codspeed and GitHub Actions. It enables performance tracking across different Valgrind versions and configurations.

• Adds a Python-based benchmarking script that uses pytest-codspeed to profile Valgrind with different configurations
• Creates GitHub Actions workflow for automated benchmarking with multiple Valgrind versions and test commands
• Implements caching and build optimization for Valgrind in CI/CD pipelines

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
bench/bench.py	Main benchmarking script with ValgrindRunner class and pytest integration for profiling Valgrind
bench/pytest.ini	Pytest configuration to exclude test data directories from discovery
bench/testdata/*	Git LFS pointer files for binary test data (test.py and architecture-specific binaries)
Justfile	Build automation recipes for downloading, building, and installing specific Valgrind versions
.github/workflows/codspeed.yml	GitHub Actions workflow for running benchmarks across matrix of commands and Valgrind versions
.github/workflows/ci.yml	Updated CI workflow to skip installing package documentation for faster builds
.gitattributes	Git LFS configuration for binary test data files

Comments suppressed due to low confidence (4)

bench/bench.py:11

• Import of 'os' is not used.

import os

bench/bench.py:14

• Import of 'sys' is not used.

import sys

bench/bench.py:15

• Import of 'Path' is not used.

from pathlib import Path

bench/bench.py:16

• Import of 'time' is not used.

import time

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[GuillaumeLagrange]

ogltm