forked from LengKundee/MQL5-Google-Onedrive
124 lines
4.7 KiB
Markdown
124 lines
4.7 KiB
Markdown
# Performance Optimization Summary
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## Overview
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This PR implements 8 critical performance optimizations addressing slow and inefficient code across the MQL5-Google-Onedrive repository.
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## Changes Summary
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### Python Scripts (4 optimizations)
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#### 1. ✅ Dynamic Sleep in Scheduler (CRITICAL)
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**File:** `scripts/schedule_research.py`
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**Problem:** Fixed 60-second blocking sleep loop wasting CPU
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**Solution:** Dynamic sleep based on `schedule.idle_seconds()`
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**Impact:** CPU usage reduction, improved job responsiveness
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#### 2. ✅ N+1 Query Pattern Fix (CRITICAL)
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**File:** `scripts/review_pull_requests.py`
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**Problem:** Redundant git calls despite pre-fetched data
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**Solution:** Improved cache lookup checking both key formats
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**Impact:** O(N) → O(1) git command executions
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#### 3. ✅ HTTP Connection Pooling (MEDIUM)
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**File:** `scripts/manage_cloudflare.py`
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**Problem:** New connection per API call
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**Solution:** Persistent session with thread-safe implementation
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**Impact:** ~100-200ms reduction per API call, proper resource cleanup
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#### 4. ✅ Authorization Decorator (MEDIUM)
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**File:** `scripts/telegram_deploy_bot.py`
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**Problem:** Repeated auth checks in 6+ handlers
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**Solution:** `@require_auth` decorator with `functools.wraps`
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**Impact:** Reduced code duplication, preserved function metadata
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### MQL5 Code (4 optimizations)
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#### 5. ✅ History Query Cache (CRITICAL)
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**File:** `mt5/MQL5/Experts/ExpertMAPSARSizeOptimized_Improved.mq5`
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**Problem:** `HistorySelect()` called every tick
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**Solution:** 60-second cache interval
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**Impact:** Database queries reduced from every tick to once per minute
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#### 6. ✅ Bar Time Check Optimization (CRITICAL)
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**File:** `mt5/MQL5/Experts/ExpertMAPSARSizeOptimized_Improved.mq5`
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**Problem:** `CopyRates()` copying 60+ bytes just for time check
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**Solution:** Replaced with lightweight `iTime()`
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**Impact:** 60+ bytes eliminated per tick
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#### 7. ✅ Static Array Allocation (MEDIUM)
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**File:** `mt5/MQL5/Indicators/SMC_TrendBreakout_MTF.mq5`
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**Problem:** Arrays allocated/deallocated every `OnCalculate()`
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**Solution:** Static global arrays
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**Impact:** ~9.6KB allocation overhead eliminated
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#### 8. ✅ Symbol Info Cache (HIGH)
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**File:** `mt5/MQL5/Include/ManagePositions.mqh`
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**Problem:** `SymbolInfoInteger()` called in position loop
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**Solution:** Query moved outside loop
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**Impact:** O(N) → O(1) redundant queries eliminated
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## Quality Assurance
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### Testing ✅
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- ✅ All Python scripts compile successfully
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- ✅ Integration tests pass (`test_automation.py`)
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- ✅ Repository validation passes (`ci_validate_repo.py`)
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- ✅ Code review completed (3 issues addressed)
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- ✅ CodeQL security scan: 0 vulnerabilities found
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### Code Review Feedback Addressed
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1. ✅ Added `@functools.wraps` to decorator for metadata preservation
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2. ✅ Implemented thread-safe session with lock
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3. ✅ Added `atexit` cleanup for session resource management
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## Documentation
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- ✅ Updated `docs/PERFORMANCE_OPTIMIZATIONS.md` with detailed analysis
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- ✅ Added inline comments explaining optimizations
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- ✅ Preserved existing code patterns and conventions
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## Commit History
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1. `def8f5b` - Initial analysis and planning
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2. `d197e22` - Python script optimizations
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3. `8101dbc` - MQL5 code optimizations
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4. `2e03970` - Syntax error fix
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5. `e29b46b` - ManagePositions optimization and documentation
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6. `56723f5` - Code review feedback addressed
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## Files Modified (8 files)
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- `scripts/schedule_research.py`
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- `scripts/review_pull_requests.py`
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- `scripts/manage_cloudflare.py`
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- `scripts/telegram_deploy_bot.py`
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- `mt5/MQL5/Experts/ExpertMAPSARSizeOptimized_Improved.mq5`
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- `mt5/MQL5/Indicators/SMC_TrendBreakout_MTF.mq5`
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- `mt5/MQL5/Include/ManagePositions.mqh`
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- `docs/PERFORMANCE_OPTIMIZATIONS.md`
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## Performance Impact
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| Category | Optimization | Severity | Impact |
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|----------|-------------|----------|--------|
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| Python | Dynamic sleep | CRITICAL | CPU usage ↓ |
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| Python | N+1 query fix | CRITICAL | O(N)→O(1) |
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| Python | Connection pool | MEDIUM | 100-200ms per call |
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| Python | Auth decorator | MEDIUM | Code quality ↑ |
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| MQL5 | History cache | CRITICAL | Queries ↓ 99% |
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| MQL5 | iTime usage | CRITICAL | 60+ bytes per tick |
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| MQL5 | Static arrays | MEDIUM | 9.6KB per calc |
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| MQL5 | Symbol cache | HIGH | O(N)→O(1) |
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## Security Summary ✅
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- No vulnerabilities introduced
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- CodeQL scan: 0 alerts
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- Thread-safe implementations added
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- Proper resource cleanup implemented
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## Next Steps
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1. Monitor performance metrics in production
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2. Consider extending optimizations to other similar patterns
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3. Profile for additional optimization opportunities
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---
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**Issue Reference:** Identified and suggested improvements to slow or inefficient code
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**Date:** 2026-02-15
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**Status:** ✅ Complete
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