smom-dbis-138/docs/deployment/TASK14_PERFORMANCE_TESTING_FRAMEWORK.md

Task 14: Performance and Load Testing Framework

Date: 2025-01-18
Status: ⏳ FRAMEWORK READY (Deferred until system operational)
Priority: 🟢 LOW

Overview

Performance and load testing framework for the cross-chain bridge system to ensure it can handle production loads.

Testing Objectives

1. Throughput: Measure transactions per second (TPS) capacity
2. Latency: Measure end-to-end transfer time
3. Gas Efficiency: Measure gas costs under load
4. CCIP Performance: Measure CCIP message processing time
5. Concurrent Load: Test system under concurrent transaction load
6. Resource Usage: Monitor resource consumption (if applicable)

Test Categories

1. Throughput Testing

Objective: Measure maximum transactions per second

Test Scenarios:

• Single direction transfers (Mainnet → ChainID 138)
• Bidirectional transfers (both directions simultaneously)
• Single bridge (WETH9 only)
• Both bridges (WETH9 and WETH10 simultaneously)

Metrics:

• Transactions per second (TPS)
• Successful transaction rate
• Failed transaction rate
• Average confirmation time

Method:

1. Send N transactions at rate R TPS
2. Monitor successful vs failed transactions
3. Measure time to completion
4. Calculate actual TPS

Target: System should handle at least 10 TPS

2. Latency Testing

Objective: Measure end-to-end transfer time

Test Scenarios:

• Mainnet → ChainID 138 transfer time
• ChainID 138 → Mainnet transfer time
• Round-trip time (Mainnet → ChainID 138 → Mainnet)

Metrics:

• Time from transaction submission to on-chain confirmation (source)
• Time from CCIP message to destination confirmation
• Total end-to-end time
• CCIP message processing time

Method:

1. Submit transaction and record timestamp
2. Monitor until destination chain confirms
3. Calculate time difference

Target: End-to-end transfer < 30 minutes (CCIP dependent)

3. Gas Efficiency Testing

Objective: Measure gas costs under various conditions

Test Scenarios:

• Single transfer gas cost
• Batch transfer gas cost (if supported)
• Gas cost with different amounts
• Gas cost variations with network congestion

Metrics:

• Gas used per transaction
• Gas price (gwei)
• Total cost (ETH)
• Cost efficiency (gas per WETH transferred)

Method:

1. Execute transactions and measure gas used
2. Record gas prices at time of execution
3. Calculate costs

Target: Optimize gas usage while maintaining security

4. CCIP Performance Testing

Objective: Measure CCIP-specific performance metrics

Test Scenarios:

• CCIP message submission time
• CCIP message confirmation time
• CCIP fee calculation accuracy
• CCIP message retry handling

Metrics:

• CCIP message ID generation time
• Time from message submission to confirmation
• CCIP fees paid
• Message delivery success rate

Target: CCIP message confirmation < 15 minutes (CCIP SLA dependent)

5. Concurrent Load Testing

Objective: Test system under concurrent transaction load

Test Scenarios:

• 10 concurrent transfers
• 50 concurrent transfers
• 100 concurrent transfers
• Mixed transfers (both directions and both bridges)

Metrics:

• Successful completion rate
• Average completion time
• Transaction ordering (if applicable)
• System stability under load

Method:

1. Submit N concurrent transactions
2. Monitor all transactions to completion
3. Measure success rate and timing

Target: 95%+ success rate under moderate load (50 concurrent)

6. Stress Testing

Objective: Test system limits and failure modes

Test Scenarios:

• Maximum concurrent transfers
• Large amount transfers
• Rapid fire transactions
• Network congestion simulation

Metrics:

• System behavior at limits
• Failure modes
• Recovery behavior
• Error handling

Target: Graceful degradation, clear error messages

Performance Benchmarks

Expected Performance

Metric	Target	Acceptable	Notes
Throughput	10+ TPS	5+ TPS	Limited by CCIP
Latency (Mainnet → 138)	< 15 min	< 30 min	CCIP dependent
Latency (138 → Mainnet)	< 15 min	< 30 min	CCIP dependent
Gas Cost (Transfer)	< 200k gas	< 300k gas	Variable with congestion
Success Rate	99%+	95%+	Under normal load
Concurrent Capacity	50+	20+	Simultaneous transfers

CCIP-Specific Benchmarks

Metric	Target	Notes
CCIP Message Time	< 15 min	Depends on CCIP network
CCIP Fee	Variable	LINK token required
CCIP Success Rate	99%+	CCIP network dependent

Testing Tools

1. Foundry/Forge

Use: Automated testing scripts

Scripts:

• test/performance/LoadTest.t.sol - Load testing
• test/performance/GasBenchmark.t.sol - Gas benchmarking

2. Cast Commands

Use: Manual testing and monitoring

Commands:

# Monitor gas usage
cast send --rpc-url $RPC_URL --private-key $KEY \
  --gas-limit 500000 \
  0x3304b747E565a97ec8AC220b0B6A1f6ffDB837e6 \
  "sendCrossChain(uint64,address,uint256)" \
  $SELECTOR $RECIPIENT $AMOUNT

# Monitor transaction status
cast tx <TX_HASH> --rpc-url $RPC_URL

3. Custom Load Testing Scripts

Use: Concurrent transaction testing

Language: Node.js/TypeScript or Python

Features:

• Concurrent transaction submission
• Metrics collection
• Reporting

4. Monitoring Tools

Use: Real-time monitoring during tests

• Etherscan/Block Explorer
• CCIP Explorer/Monitoring
• Custom monitoring scripts

Test Execution Plan

Phase 1: Baseline Testing

1. Single transfer performance (both directions)
2. Gas cost baseline measurement
3. CCIP performance baseline

Phase 2: Load Testing

1. Throughput testing (5, 10, 20 TPS)
2. Concurrent transfer testing (10, 50, 100 concurrent)
3. Mixed load testing (both bridges, both directions)

Phase 3: Stress Testing

1. Maximum load testing
2. Edge case performance
3. Failure mode testing

Phase 4: Long-Term Testing

1. Extended duration testing (24+ hours)
2. Sustained load testing
3. Monitoring for degradation

Test Data Collection

Metrics to Collect

• Transaction hashes
• Gas used
• Gas prices
• Timestamps (submission, confirmation)
• CCIP message IDs
• Success/failure status
• Error messages (if any)

Reporting Format

Performance Test Report
Date: YYYY-MM-DD
Test Duration: X hours
Total Transactions: N
Successful: M (percentage)
Failed: F (percentage)
Average Latency: X minutes
Average Gas Cost: X gwei
Peak Throughput: X TPS

Dependencies

Prerequisites

• ✅ Bridge destinations configured
• ✅ Test accounts with sufficient funds
• ✅ LINK tokens for CCIP fees
• ✅ Monitoring tools access

When to Run

Recommended Timing:

• After bridge configuration complete
• After initial integration testing (Task 4) passes
• Before production deployment
• During scheduled maintenance windows

Current Status

Status: ⏳ DEFERRED

Reason: Performance testing should be done after:

1. Bridge configuration is complete (Task 7)
2. Cross-chain integration testing passes (Task 4)
3. System is fully operational

Framework: ✅ READY

The testing framework is documented and ready to execute when the system is operational.

Recommendations

1. Start with Baseline: Run baseline tests first to establish performance metrics
2. Gradual Load Increase: Gradually increase load to find system limits
3. Monitor CCIP: CCIP performance is a key dependency
4. Document Results: Keep detailed performance records
5. Compare Over Time: Track performance metrics over time

Future Enhancements

• Automated performance regression testing
• Continuous performance monitoring
• Alerting on performance degradation
• Performance optimization based on results

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Status: ⏳ FRAMEWORK READY - DEFERRED UNTIL SYSTEM OPERATIONAL