Create Performance Testing Framework

[adriandarian]

Create standardized performance testing and benchmarking framework for all repositories.

Details

Automated performance testing with regression detection and trend analysis.

Framework Components

• Performance test harness
• Benchmarking utilities
• Load testing tools
• Profiling integration
• Results storage and comparison
• Regression detection
• Performance budgets

Test Types

Benchmark Tests

• Function execution time
• Memory usage
• CPU utilization
• Network I/O
• Disk I/O
• Throughput metrics

Load Tests

• Concurrent user simulation
• Request rate handling
• Resource usage under load
• Scalability testing
• Stress testing
• Spike testing

Profiling

• CPU profiling
• Memory profiling
• Call graph analysis
• Hot path detection
• Bottleneck identification

Performance Budgets

Define acceptable limits:

budgets:
  build_time:
    max: 120s
    warning: 90s
  
  bundle_size:
    max: 500kb
    warning: 400kb
  
  api_response:
    p50: 100ms
    p95: 500ms
    p99: 1000ms
  
  memory_usage:
    max: 512mb
    warning: 400mb

Workflow Integration

• Run benchmarks on every PR
• Compare to base branch
• Comment results on PR
• Fail if budget exceeded
• Track trends over time
• Nightly comprehensive runs

Supported Languages

JavaScript/TypeScript

• Benchmark.js
• tinybench
• autocannon (HTTP)

Python

• pytest-benchmark
• locust (load testing)
• memory_profiler

Go

• testing.B benchmarks
• pprof profiling

Rust

• Criterion.rs
• cargo bench

Results Storage

• Store results in time-series format
• Historical comparison
• Trend visualization
• Regression detection
• Export to monitoring systems

Reporting

PR Comment

## Performance Report

| Metric | Current | Base | Change |
|--------|---------|------|--------|
| Build time | 85s | 80s | +6.25% ⚠️ |
| Bundle size | 380kb | 375kb | +1.33% ✅ |
| API (p95) | 450ms | 420ms | +7.14% ⚠️ |

⚠️ 2 metrics approaching budget

Dashboard

• Performance trends
• Budget compliance
• Slowest operations
• Resource usage
• Comparison charts

Acceptance Criteria

• Framework supports all major languages
• Benchmarks run automatically
• Results stored reliably
• Regression detection accurate
• Budget enforcement working
• PR comments helpful
• Dashboard visualizations clear
• Documentation comprehensive
• Integrated with 5+ repos
• Performance acceptable (<5min runs)