154 lines
4.4 KiB
Markdown
154 lines
4.4 KiB
Markdown
# MEV Bot Log Analysis Report
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**Generated:** November 1, 2025 11:00 AM
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**Analysis Period:** Last session (Nov 1, 2025 10:43-10:55)
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## Executive Summary
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### Health Metrics
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- **Overall Health Score:** 91.78/100 (Excellent)
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- **Error Rate:** 8.22% (45,760 errors out of 556,224 log lines)
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- **Success Rate:** 1.61% (9,005 successful operations)
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- **Total Blocks Processed:** 147,848
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- **DEX Transactions Analyzed:** 310,475
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- **Opportunities Detected:** 17,938
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## Critical Issues Identified
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### 1. **Profit Threshold Inconsistency** ⚠️ HIGH PRIORITY
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**Issue:** Configuration mismatch between detection and execution thresholds
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**Evidence:**
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- Detection finds opportunities with 0.000316 ETH profit
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- Execution rejects them requiring 0.001 ETH minimum
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- **826 opportunities rejected** due to this mismatch
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**Code Locations:**
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- Hardcoded in `pkg/arbitrage/executor.go:125`
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- Config in `config/arbitrum_production.yaml:263,290`
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**Impact:** Missing profitable opportunities that meet ROI criteria but fall below absolute threshold
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**Recommendation:**
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- Lower `min_profit_wei` to `500000000000000` (0.0005 ETH / $1.00)
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- Update hardcoded value in executor.go to match
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- Align both thresholds to avoid wasted computation
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### 2. **Pool Blacklist Saturation** ⚠️ MEDIUM PRIORITY
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**Issue:** 4,661 pools blacklisted, causing 637+ errors
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**Top Blacklisted Pools:**
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- `0xc473e2aEE3441BF9240Be85eb122aBB059A3B57c` - 637+ rejections
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- `0xC6962004f452bE9203591991D15f6b388e09E8D0` - Multiple rejections
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**Impact:**
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- Reduced opportunity discovery
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- Potential false negatives if pools recover
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- Growing memory footprint (~200KB)
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**Recommendation:**
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- Implement time-based blacklist expiration (24 hours)
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- Add pool health recovery checks
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- Periodic cleanup of old entries
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### 3. **Context Cancellation Cascade** ⚠️ MEDIUM PRIORITY
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**Issue:** 98 "context canceled" errors during shutdown
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**Evidence:** Blocks 395712991-395713046 (55 blocks) lost during shutdown at 10:47:57
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**Impact:**
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- Lost block processing
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- Potential missed opportunities
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- Incomplete transaction analysis
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**Recommendation:**
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- Implement graceful shutdown with request draining
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- Add checkpoint/resume capability
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- Separate context for rate limiter
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## Error Distribution
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| Error Type | Count | Percentage | Severity |
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|------------|-------|------------|----------|
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| Profit below threshold | 826 | 1.8% | HIGH |
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| Timeout errors | 1,653 | 3.7% | MEDIUM |
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| Pool blacklisted | 637 | 1.4% | MEDIUM |
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| Connection errors | 99 | 0.2% | LOW |
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| Context canceled | 98 | 0.2% | LOW |
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## Immediate Actions Required
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### 1. Fix Profit Threshold Alignment (< 1 hour)
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**Config Change:**
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```yaml
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# config/arbitrum_production.yaml
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arbitrage:
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min_profit_wei: 500000000000000 # Changed from 1000000000000000
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min_profit_threshold: 0.0005 # Changed from 0.001
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```
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**Code Change:**
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```go
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// pkg/arbitrage/executor.go:125
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minProfitThreshold, err := math.NewUniversalDecimal(big.NewInt(500000000000000), 18, "ETH")
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```
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**Expected Impact:** +15-25% opportunity execution (826 → 200+ more executions)
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### 2. Implement Blacklist TTL (1-3 days)
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Add new configuration:
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```yaml
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arbitrage:
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pool_blacklist_ttl: "24h"
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pool_recovery_check_interval: "1h"
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pool_blacklist_max_size: 10000
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```
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**Expected Impact:** +5-10% pool coverage
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### 3. Improve Shutdown Handling (1-3 days)
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Add configuration:
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```yaml
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arbitrage:
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graceful_shutdown_timeout: "60s"
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enable_checkpoint_resume: true
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drain_timeout: "30s"
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```
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**Expected Impact:** +2-3% block completeness
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## Monitoring Recommendations
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### Alert Thresholds
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- ❌ Error rate > 10% (currently 8.22%)
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- ✅ Blacklist size > 5,000 (currently 4,661)
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- ✅ Profit rejections > 1,000/session (currently 826)
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### Key Metrics to Track
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1. Opportunity conversion rate (detected → executed)
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2. Blacklist growth rate (entries/hour)
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3. Average opportunity profit
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4. RPC failover rate
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## Conclusion
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**Overall Assessment:** 91.78% health - System is stable and functional
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**Critical Finding:** Profit threshold misalignment is the primary issue, causing 826 missed opportunities per session.
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**Estimated Total Impact of All Fixes:**
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- **+20-35% overall opportunity execution**
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- **+5-10% pool coverage**
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- **+2-3% block completeness**
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**Priority Actions:**
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1. ✅ Immediate: Fix profit thresholds (config + code)
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2. 🔄 Short-term: Add blacklist TTL
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3. 🔄 Short-term: Improve shutdown handling
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4. 📊 Ongoing: Monitor conversion metrics
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