Lambda ran a devnet of its lean consensus client, ethlambda, with 1,024 validators and published the results.1
Setup
The network ran on 32 nodes with 32 validators each, split across 8 aggregation subnets. Each aggregator handled 128 signatures per interval. Slots lasted 4 seconds, with 0.8-second intervals. A signature is 1.3 KB; a block proof is 220 KB.1
Results
97% of signatures arrived within their interval. Only 5% of blocks arrived on time. Block building averaged 2.5 seconds and recursive aggregation 1.3 seconds. 11% of blocks were reorged, and finality lagged by 24 slots, close to two minutes.1
Findings
The proposer was the bottleneck. Late blocks were orphaned, and slow aggregation drove the finality lag. The team expects committee aggregation to hold at 2,048 validators.1