feat: GossipSub

[spypsy]

Fixes #5056

[AztecBot]

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Benchmark results

Metrics with a significant change:

• circuit_simulation_time_in_ms (private-kernel-ordering): 139 (-44%)
• circuit_simulation_time_in_ms (root-parity): 129 (-92%)
• circuit_simulation_time_in_ms (root-rollup): 50.1 (-35%)
• circuit_simulation_time_in_ms (public-kernel-app-logic): 1,690 (-17%)
• circuit_simulation_time_in_ms (merge-rollup): 3,169 (-41%)
• circuit_simulation_time_in_ms (public-kernel-teardown): 111 (-35%)
• circuit_simulation_time_in_ms (public-kernel-setup): 122 (-46%)
• circuit_input_size_in_bytes (root-parity): 1,244 (-95%)
• circuit_input_size_in_bytes (root-rollup): 4,551 (-60%)
• circuit_output_size_in_bytes (private-kernel-ordering): 49,888 (+17%)
• circuit_output_size_in_bytes (base-parity): 265 (+314%)
• circuit_output_size_in_bytes (root-parity): 265 (+314%)
• circuit_output_size_in_bytes (public-kernel-app-logic): 52,067 (+130%)
• circuit_output_size_in_bytes (public-kernel-tail): 7,491 (+92%)
• circuit_output_size_in_bytes (public-kernel-teardown): 52,067 (+73%)
• circuit_output_size_in_bytes (public-kernel-setup): 52,067 (+73%)
• tx_pxe_processing_time_ms (0): 1,262 (-29%)
• tx_pxe_processing_time_ms (1): 883 (-20%)
• tx_pxe_processing_time_ms (2): 3,494 (-16%)
• batch_insert_into_append_only_tree_32_depth_ms (512): 263 (-24%)
• tx_sequencer_processing_time_ms (2): 691 (-32%)
• tx_sequencer_processing_time_ms (4): 906 (-26%)
• tx_sequencer_processing_time_ms (5): 2,071 (-22%)
• tx_sequencer_processing_time_ms (8): 1,163 (-24%)
• l2_block_building_time_in_ms (8): 18,822 (-28%)
• l2_block_building_time_in_ms (32): 73,666 (-18%)
• l2_block_rollup_simulation_time_in_ms (8): 18,612 (-27%)
• l2_block_rollup_simulation_time_in_ms (32): 72,907 (-18%)
• l2_block_public_tx_process_time_in_ms (8): 8,539 (-23%)

Detailed results

All benchmarks are run on txs on the Benchmarking contract on the repository. Each tx consists of a batch call to create_note and increment_balance, which guarantees that each tx has a private call, a nested private call, a public call, and a nested public call, as well as an emitted private note, an unencrypted log, and public storage read and write.

This benchmark source data is available in JSON format on S3 here.

L2 block published to L1

Each column represents the number of txs on an L2 block published to L1.

Metric	8 txs	32 txs	64 txs
l1_rollup_calldata_size_in_bytes	772 (+4%)	772 (+4%)	772 (+4%)
l1_rollup_calldata_gas	6,832 (+2%)	6,844 (+2%)	6,832 (+2%)
l1_rollup_execution_gas	587,313	587,325	587,313
l2_block_processing_time_in_ms	1,431 (-15%)	5,372 (+3%)	10,542 (+7%)
note_successful_decrypting_time_in_ms	200	420	811
note_trial_decrypting_time_in_ms	94.8	21.7	118
l2_block_building_time_in_ms	⚠️ 18,822 (-28%)	⚠️ 73,666 (-18%)	147,521 (-13%)
l2_block_rollup_simulation_time_in_ms	⚠️ 18,612 (-27%)	⚠️ 72,907 (-18%)	145,816 (-13%)
l2_block_public_tx_process_time_in_ms	⚠️ 8,539 (-23%)	33,394 (-12%)	66,890 (-5%)

L2 chain processing

Each column represents the number of blocks on the L2 chain where each block has 16 txs.

Metric	5 blocks	10 blocks
node_history_sync_time_in_ms	16,584 (+12%)	31,066 (+15%)
note_history_successful_decrypting_time_in_ms	1,065	1,886
note_history_trial_decrypting_time_in_ms	130	95.4
node_database_size_in_bytes	19,144,784 (-8%)	35,758,160 (-4%)
pxe_database_size_in_bytes	29,859	59,414

Circuits stats

Stats on running time and I/O sizes collected for every circuit run across all benchmarks.

Circuit	circuit_simulation_time_in_ms	circuit_input_size_in_bytes	circuit_output_size_in_bytes
private-kernel-init	158 (-17%)	47,815 (+2%)	31,978 (+11%)
private-kernel-inner	180 (-21%)	80,846 (+5%)	31,978 (+11%)
private-kernel-ordering	⚠️ 139 (-44%)	57,732 (+9%)	⚠️ 49,888 (+17%)
base-parity	76.6 (-5%)	128	⚠️ 265 (+314%)
root-parity	⚠️ 129 (-92%)	⚠️ 1,244 (-95%)	⚠️ 265 (+314%)
base-rollup	12,443 (-15%)	110,926	957 (+3%)
root-rollup	⚠️ 50.1 (-35%)	⚠️ 4,551 (-60%)	821 (+4%)
public-kernel-app-logic	⚠️ 1,690 (-17%)	62,069 (+14%)	⚠️ 52,067 (+130%)
public-kernel-tail	4,314 (-13%)	168,566 (+6%)	⚠️ 7,491 (+92%)
merge-rollup	⚠️ 3,169 (-41%)	2,760 (+2%)	957 (+3%)
public-kernel-teardown	⚠️ 111 (-35%)	62,069 (+14%)	⚠️ 52,067 (+73%)
public-kernel-setup	⚠️ 122 (-46%)	62,069 (+14%)	⚠️ 52,067 (+73%)

Tree insertion stats

The duration to insert a fixed batch of leaves into each tree type.

Metric	1 leaves	16 leaves	64 leaves	128 leaves	512 leaves	1024 leaves	2048 leaves	4096 leaves	32 leaves
batch_insert_into_append_only_tree_16_depth_ms	11.1 (-4%)	18.0 (-8%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_count	16.8	31.6	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_ms	0.643 (-4%)	0.556 (-8%)	N/A	N/A	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	51.6 (-5%)	82.2	⚠️ 263 (-24%)	516 (+6%)	983 (-1%)	1,973 (+2%)	N/A
batch_insert_into_append_only_tree_32_depth_hash_count	N/A	N/A	96.0	159	543	1,055	2,079	4,127	N/A
batch_insert_into_append_only_tree_32_depth_hash_ms	N/A	N/A	0.528 (-5%)	0.506	0.478 (-24%)	0.480 (+5%)	0.468	0.470 (+2%)	N/A
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	60.8 (-4%)	121 (-5%)	375 (-14%)	759 (+6%)	1,460 (-5%)	2,921 (+1%)	N/A
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	105	207	691	1,363	2,707	5,395	N/A
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.536 (-4%)	0.541 (-5%)	0.510 (-14%)	0.519 (+5%)	0.507 (-4%)	0.507	N/A
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	68.3 (+1%)
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	109 (+1%)
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	0.593

Miscellaneous

Transaction sizes based on how many contract classes are registered in the tx.

Metric	0 registered classes	1 registered classes
tx_size_in_bytes	51,450 (+15%)	537,961

Transaction size based on fee payment method

Metric	native fee payment method	fpc_public fee payment method	fpc_private fee payment method
tx_with_fee_size_in_bytes	897	1,145	1,345

Transaction processing duration by data writes.

Metric	0 new note hashes	1 new note hashes	2 new note hashes
tx_pxe_processing_time_ms	⚠️ 1,262 (-29%)	⚠️ 883 (-20%)	⚠️ 3,494 (-16%)

Metric	1 public data writes	2 public data writes	3 public data writes	4 public data writes	5 public data writes	8 public data writes
tx_sequencer_processing_time_ms	845 (-7%)	⚠️ 691 (-32%)	1,344 (-15%)	⚠️ 906 (-26%)	⚠️ 2,071 (-22%)	⚠️ 1,163 (-24%)