feat: Performance Bottleneck Finder (closes #171) #188

Rockachopa · 2026-04-15T14:50:14Z

Rockachopa commented

2026-04-15 14:50:14 +00:00

Summary

Adds a performance bottleneck finder that scans repos for slow tests, build artifacts, CI inefficiencies, and heavy imports.

Features

Test analysis: Scans for time.sleep(), real HTTP calls, slow subprocess patterns
Build analysis: Detects large artifacts (node_modules/, __pycache__/, dist/)
CI analysis: Checks GitHub Actions and Gitea CI configs for cache misses, missing parallelism
Import analysis: Flags heavy imports (pandas, torch, tensorflow, etc.)
Output: Markdown report or JSON, designed for weekly cron

Usage

# Scan a repo and print report
python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo

# Write markdown report
python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo --report metrics/perf_report.md

# JSON output for automation
python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo --json

Weekly Cron

0 9 * * 1 cd /path/to/compounding-intelligence && python3 scripts/perf_bottleneck_finder.py --repo /path/to/target --report metrics/perf_report.md

Tests

14 test cases covering all analysis modules:

TestBottleneck — dataclass creation, serialization
TestPerfReport — report structure, to_dict
TestSeveritySort — critical-first ordering
TestSlowTestScan — sleep detection, HTTP calls, non-test skipping
TestBuildArtifacts — large dirs, pycache, node_modules
TestMakefileAnalysis — pip install, npm patterns
TestImportAnalysis — pandas, torch, light imports
TestGenerateReport — empty repos, with findings, categories
TestMarkdownReport — formatting, empty reports

Closes #171

## Summary Adds a performance bottleneck finder that scans repos for slow tests, build artifacts, CI inefficiencies, and heavy imports. ## Features - **Test analysis**: Scans for `time.sleep()`, real HTTP calls, slow subprocess patterns - **Build analysis**: Detects large artifacts (`node_modules/`, `__pycache__/`, `dist/`) - **CI analysis**: Checks GitHub Actions and Gitea CI configs for cache misses, missing parallelism - **Import analysis**: Flags heavy imports (`pandas`, `torch`, `tensorflow`, etc.) - **Output**: Markdown report or JSON, designed for weekly cron ## Usage ```bash # Scan a repo and print report python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo # Write markdown report python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo --report metrics/perf_report.md # JSON output for automation python3 scripts/perf_bottleneck_finder.py --repo /path/to/repo --json ``` ## Weekly Cron ```cron 0 9 * * 1 cd /path/to/compounding-intelligence && python3 scripts/perf_bottleneck_finder.py --repo /path/to/target --report metrics/perf_report.md ``` ## Tests 14 test cases covering all analysis modules: - `TestBottleneck` — dataclass creation, serialization - `TestPerfReport` — report structure, to_dict - `TestSeveritySort` — critical-first ordering - `TestSlowTestScan` — sleep detection, HTTP calls, non-test skipping - `TestBuildArtifacts` — large dirs, pycache, node_modules - `TestMakefileAnalysis` — pip install, npm patterns - `TestImportAnalysis` — pandas, torch, light imports - `TestGenerateReport` — empty repos, with findings, categories - `TestMarkdownReport` — formatting, empty reports Closes #171

Rockachopa added 2 commits 2026-04-15 14:50:15 +00:00

feat: add Performance Bottleneck Finder (#171 ) be805a1b4c

Analyzes: slow tests, build artifacts, CI workflows, heavy imports.
Outputs: markdown report or JSON. Designed for weekly cron.

Closes #171

test: add tests for Performance Bottleneck Finder b3592e14ad

Refs #171

Timmy approved these changes 2026-04-15 16:33:14 +00:00

Timmy left a comment

LGTM. Performance bottleneck finder with good coverage: slow tests via pytest --durations, build log analysis, CI workflow durations, and large artifact detection. Clean dataclass models. The SLOW_TEST_THRESHOLD_S and SLOW_BUILD_STEP_THRESHOLD_S configs are reasonable defaults. Approved.