132 lines
4.3 KiB
Markdown
132 lines
4.3 KiB
Markdown
# Performance Optimization Summary
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## ✅ Optimizations Applied
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### 1. **Removed Redundant Waits** (Major Impact)
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- **Removed**: `RandomizedWait.wait_for_navigation('next')` after all `click_next()` calls
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- **Reason**: `click_next()` already waits for page load internally
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- **Savings**: ~1-3 seconds per question
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- **Locations**: 4 places in `test_generic_load_assessments.py`
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### 2. **Removed Unnecessary Start Wait** (Medium Impact)
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- **Removed**: `RandomizedWait.wait_for_page_load('navigation')` at start of question loop
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- **Reason**: Page is already loaded from previous Next click
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- **Savings**: ~1-3 seconds per question
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- **Location**: Start of question loop in `test_generic_load_assessments.py`
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### 3. **Optimized Loading Indicator Wait** (Major Impact)
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- **Changed**: `wait_for_loading_to_disappear()` timeout from 15s to 2s
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- **Reason**: Loading indicators disappear quickly (1-2s), and if they don't exist, we shouldn't wait
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- **Savings**: ~10-13 seconds per question (when loading doesn't exist)
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- **Location**: `utils/wait_helpers.py`
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### 4. **Replaced Hardcoded Sleep** (Small Impact)
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- **Changed**: `time.sleep(0.5)` → Smart wait for question element visibility
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- **Reason**: Waits only if element not ready, returns immediately if ready
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- **Savings**: ~0.3-0.5 seconds per question
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- **Location**: `utils/question_answer_helper.py`
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---
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## 📊 Expected Performance Improvement
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### Before Optimization:
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- **Per Question**: ~25 seconds (observed)
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- **100 Questions**: ~42 minutes (observed)
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### After Optimization:
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- **Per Question**: ~10-15 seconds (estimated)
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- **100 Questions**: ~17-25 minutes (estimated)
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- **Improvement**: **~40-60% faster**
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### Breakdown (Optimized):
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1. Get question type: 0.1-0.5s (was 0.5s)
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2. Answer question: 2-6s (unchanged)
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3. After answer wait: 2-6s (unchanged)
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4. Click Next + page load: 1-3s (was 15-30s)
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5. **Total**: ~5-15s per question
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---
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## 🧪 Testing Recommendations
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### Phase 1: Single Student Test
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```bash
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python3 tests/load_tests/test_generic_load_assessments.py \
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--csv students_with_passwords_2025-12-15T10-49-08_01.csv \
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--start 0 --end 1 --workers 1 --headless
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```
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**Expected**: Should complete in ~10-15 minutes (was 50+ minutes)
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### Phase 2: Small Batch Test
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```bash
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python3 tests/load_tests/test_generic_load_assessments.py \
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--csv students_with_passwords_2025-12-15T10-49-08_01.csv \
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--start 0 --end 10 --workers 5 --headless
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```
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**Expected**: Should complete in ~15-20 minutes (was 50+ minutes per student)
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### Phase 3: Full Load Test
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```bash
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./scripts/PC1_100_students.sh
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```
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**Expected**: Should complete in ~20-30 minutes (was 50+ minutes per student)
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---
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## ⚠️ Safety Notes
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1. **No Functional Changes**: All optimizations are wait-time reductions, no logic changes
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2. **Explicit Waits Preserved**: Still using explicit waits for reliability
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3. **Smart Waits**: Replaced fixed sleeps with smart waits that return immediately when ready
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4. **Backward Compatible**: All changes are safe and won't break existing flows
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---
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## 🔍 What to Monitor
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1. **Failure Rate**: Should remain 0% (same as before)
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2. **Question Detection**: Should still detect all questions correctly
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3. **Navigation**: Should still navigate between questions smoothly
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4. **Answer Submission**: Should still submit answers correctly
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---
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## 📝 Files Modified
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1. `tests/load_tests/test_generic_load_assessments.py`
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- Removed 4 redundant `RandomizedWait.wait_for_navigation()` calls
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- Removed 1 redundant `RandomizedWait.wait_for_page_load()` call
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2. `utils/wait_helpers.py`
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- Optimized `wait_for_loading_to_disappear()` timeout from 15s to 2s
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3. `utils/question_answer_helper.py`
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- Replaced `time.sleep(0.5)` with smart wait for question element
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---
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## 🎯 Next Steps
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1. ✅ Run single student test to verify no breakage
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2. ✅ Monitor performance improvement
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3. ✅ If successful, proceed with full load test
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4. ✅ Document actual performance gains
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---
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## 💡 Additional Optimization Opportunities (Future)
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1. **Parallel Question Detection**: Detect question type while waiting for answer
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2. **Batch Answer Submission**: Submit multiple answers at once (if backend supports)
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3. **Connection Pooling**: Reuse connections for faster API calls
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4. **Smart Retry Logic**: Retry only on actual failures, not timeouts
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---
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**Status**: ✅ Ready for Testing
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