benchmark reth live sync

[dajuguan]

I benchmarked reth's live sync performance using reth-bench with approximately 20,000 mainnet blocks and the default configurations outlined in the documentation. However, the performance appears to be slower than expected. Here are the results:

Total Ggas/s: 0.0946  
total_duration=3926.347488098s  
total_gas_used=371482827669  
blocks_processed=20331

Are there any additional options or configurations that can be enabled to improve performance?