foryourhealth111-pixel/performance-testing
bundled/skills/performance-testing/SKILL.md
Benchmark indicator performance with BenchmarkDotNet. Use for Series/Buffer/Stream benchmarks, regression detection, and optimization patterns. Target 1.5x Series for StreamHub, 1.2x for BufferList.
$ install --global
skillsauthnpx skillsauth add foryourhealth111-pixel/vco-skills-codex performance-testingInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 13, 2026, 5:14 AM109.6s2 files scanned
SKILL.md
- name:
- performance-testing
- description:
- Benchmark indicator performance with BenchmarkDotNet. Use for Series/Buffer/Stream benchmarks, regression detection, and optimization patterns. Target 1.5x Series for StreamHub, 1.2x for BufferList.
Performance testing
Running benchmarks
cd tools/performance
# Run all benchmarks (~15-20 minutes)
dotnet run -c Release
# Run specific category
dotnet run -c Release --filter *StreamIndicators*
dotnet run -c Release --filter *BufferIndicators*
dotnet run -c Release --filter *SeriesIndicators*
# Run specific indicator
dotnet run -c Release --filter *.EmaHub
Adding benchmarks
Series pattern
[Benchmark]
public void ToMyIndicator() => quotes.ToMyIndicator(14);
Stream pattern
[Benchmark]
public object MyIndicatorHub() => quoteHub.ToMyIndicatorHub(14).Results;
Buffer pattern
[Benchmark]
public MyIndicatorList MyIndicatorList() => new(14) { quotes };
Style comparison
[Benchmark]
public IReadOnlyList<MyResult> MyIndicatorSeries() => quotes.ToMyIndicator(14);
[Benchmark]
public IReadOnlyList<MyResult> MyIndicatorBuffer() => quotes.ToMyIndicatorList(14);
[Benchmark]
public IReadOnlyList<MyResult> MyIndicatorStream() => quoteHub.ToMyIndicator(14).Results;
Performance targets
Note: These are optimization goals for future v3.1+ effort. Current implementations vary—see PERFORMANCE_ANALYSIS.md for actual measured performance. Some indicator families (e.g., EMA) have inherent framework overhead due to simple operation costs.
| Style | Target vs Series | Use Case | | ----- | ---------------- | -------- | | Series | Baseline | Batch processing | | BufferList | ≤ 1.2x | Incremental data | | StreamHub | ≤ 1.5x | Real-time feeds |
Expected execution times (502 periods)
Note: These are optimization targets. Actual execution times vary by indicator complexity and current implementation.
| Complexity | Time | Examples | | ---------- | ---- | -------- | | Fast | < 30μs | SMA, EMA, WMA, RSI | | Medium | 30-60μs | MACD, Bollinger Bands, ATR | | Complex | 60-100μs | HMA, ADX, Stochastic | | Advanced | 100-200μs+ | Ichimoku, Hurst |
Regression detection
# Auto-detect baseline and results
pwsh detect-regressions.ps1
# Custom threshold (default 10%)
pwsh detect-regressions.ps1 -ThresholdPercent 15
Exit codes:
0- No regressions1- Regressions found
Creating baselines
cp BenchmarkDotNet.Artifacts/results/Performance.*-report-full.json \
baselines/baseline-v3.0.0.json
Required optimization patterns
- Minimize allocations in hot paths
- Avoid LINQ in performance-critical loops
- Use
Span<T>for zero-copy operations - Cache calculations when possible
- Test with realistic data sizes (502 periods)
Prohibited patterns
- Excessive LINQ in hot paths
- Boxing/unboxing of value types
- Unnecessary string allocations
- Redundant calculations in loops
- Poor cache locality
See references/benchmark-patterns.md for detailed patterns.
Last updated: December 31, 2025
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