feat: Min and max block times for sequencer

[spalladino]

Adds two new config variables for the sequencer: min and max block time in seconds. The sequencer now checks the current time against the previous block. If it's less than min, it doesn't build a block. If it's more than max, it builds the block even with no txs.

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Benchmark results

Metrics with a significant change:

• protocol_circuit_simulation_time_in_ms (private-kernel-tail-to-public): 5,303 (+18%)
• avm_simulation_time_ms (Token:mint_public): 272 (+205%)
• avm_simulation_time_ms (Token:assert_minter_and_mint): 49.2 (-51%)
• avm_simulation_time_ms (Token:_increase_public_balance): 18.5 (-78%)
• avm_simulation_time_ms (FPC:pay_refund_with_shielded_rebate): 135 (+106%)

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.

Proof generation

Each column represents the number of threads used in proof generation.

Metric	1 threads	4 threads	16 threads	32 threads	64 threads
proof_construction_time_sha256_ms	5,714 (-1%)	1,543	705	750 (-1%)	769 (-1%)
proof_construction_time_sha256_30_ms	11,735 (-1%)	3,153 (-1%)	1,404 (-1%)	1,425	1,453 (-1%)
proof_construction_time_sha256_100_ms	43,810 (-1%)	11,971	5,415 (-1%)	5,393 (-1%)	5,361
proof_construction_time_poseidon_hash_ms	78.0	34.0	34.0 (-3%)	59.0 (+2%)	87.0
proof_construction_time_poseidon_hash_30_ms	1,517 (-1%)	419 (-1%)	202	228 (+2%)	270 (+2%)
proof_construction_time_poseidon_hash_100_ms	5,622 (-1%)	1,505 (-1%)	674	723 (-1%)	752 (+1%)

L2 block published to L1

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

Metric	4 txs	8 txs	16 txs
l1_rollup_calldata_size_in_bytes	708	708	708
l1_rollup_calldata_gas	6,600	6,586	6,576
l1_rollup_execution_gas	584,280	584,417	584,558
l2_block_processing_time_in_ms	752 (-1%)	1,421 (+1%)	2,721
l2_block_building_time_in_ms	10,830 (-1%)	21,076	42,070
l2_block_rollup_simulation_time_in_ms	10,830 (-1%)	21,075	42,070
l2_block_public_tx_process_time_in_ms	9,039 (-1%)	19,105	39,918

L2 chain processing

Each column represents the number of blocks on the L2 chain where each block has 8 txs.

Metric	3 blocks	5 blocks
node_history_sync_time_in_ms	7,101 (+1%)	9,889
node_database_size_in_bytes	12,705,872	16,900,176
pxe_database_size_in_bytes	16,254	26,813

Circuits stats

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

Circuit	simulation_time_in_ms	witness_generation_time_in_ms	input_size_in_bytes	output_size_in_bytes	proving_time_in_ms	proof_size_in_bytes	num_public_inputs	size_in_gates
private-kernel-init	104 (-6%)	412 (-1%)	21,310	53,089	N/A	N/A	N/A	N/A
private-kernel-inner	188 (+1%)	722	79,930	53,265	N/A	N/A	N/A	N/A
private-kernel-tail	451	905 (+1%)	60,700	57,446	N/A	N/A	N/A	N/A
base-parity	6.44	709	160	96.0	1,994 (-4%)	13,188	19.0	131,072
root-parity	109 (+1%)	119 (-2%)	66,908	96.0	32,416 (+4%)	13,188	19.0	4,194,304
base-rollup	3,402	4,935 (-1%)	181,595	632	44,589	13,988	44.0	4,194,304
root-rollup	154 (+1%)	118 (-6%)	52,797	652	28,209	13,924	42.0	4,194,304
public-kernel-setup	116 (+1%)	2,707 (-1%)	112,376	80,246	17,747 (-2%)	141,444	4,027	2,097,152
public-kernel-app-logic	121	3,924 (-3%)	112,376	80,246	11,002 (-3%)	141,444	4,027	1,048,576
public-kernel-tail	639	23,038 (-7%)	410,117	10,814	66,913 (-1%)	26,372	431	8,388,608
private-kernel-reset-tiny	233 (-3%)	900	76,064	52,960	N/A	N/A	N/A	N/A
private-kernel-tail-to-public	⚠️ 5,303 (+18%)	1,606	900,567	1,632	N/A	N/A	N/A	N/A
public-kernel-teardown	107 (+6%)	3,882 (-2%)	112,376	80,246	19,454 (-1%)	141,444	4,027	2,097,152
merge-rollup	59.0 (+1%)	N/A	34,590	632	N/A	N/A	N/A	N/A
undefined	N/A	N/A	N/A	N/A	160,426	N/A	N/A	N/A

Stats on running time collected for app circuits

Function	input_size_in_bytes	output_size_in_bytes	witness_generation_time_in_ms	proof_size_in_bytes	proving_time_in_ms
ContractClassRegisterer:register	1,312	11,699	344	N/A	N/A
ContractInstanceDeployer:deploy	1,376	11,699	27.5	N/A	N/A
MultiCallEntrypoint:entrypoint	1,888	11,699	604	N/A	N/A
GasToken:deploy	1,344	11,699	436	N/A	N/A
SchnorrAccount:constructor	1,280	11,699	430	N/A	N/A
SchnorrAccount:entrypoint	2,272	11,699	820	N/A	N/A
Token:privately_mint_private_note	1,248	11,699	502 (-1%)	N/A	N/A
FPC:fee_entrypoint_public	1,312	11,699	89.8 (+4%)	N/A	N/A
Token:transfer	1,280	11,699	1,319	N/A	N/A
AuthRegistry:set_authorized (avm)	21,702	N/A	N/A	102,048	2,234 (+1%)
FPC:prepare_fee (avm)	25,150	N/A	N/A	102,112	2,244 (-2%)
Token:transfer_public (avm)	58,188	N/A	N/A	102,112	6,795 (+1%)
AuthRegistry:consume (avm)	35,580	N/A	N/A	102,080	2,666 (-2%)
FPC:pay_refund (avm)	30,010	N/A	N/A	102,080	3,571 (-2%)
Benchmarking:create_note	1,312	11,699	421	N/A	N/A
SchnorrAccount:verify_private_authwit	1,248	11,699	44.2	N/A	N/A
Token:unshield	1,344	11,699	1,145 (+1%)	N/A	N/A
FPC:fee_entrypoint_private	1,344	11,699	1,429 (+1%)	N/A	N/A

AVM Simulation

Time to simulate various public functions in the AVM.

Function	time_ms	bytecode_size_in_bytes
GasToken:_increase_public_balance	98.6	13,790
GasToken:set_portal	14.7 (-7%)	3,339
Token:constructor	122 (+1%)	23,692
FPC:constructor	100 (+9%)	13,592
GasToken:mint_public	84.3 (+4%)	10,158
Token:mint_public	⚠️ 272 (+205%)	19,034
Token:assert_minter_and_mint	⚠️ 49.2 (-51%)	12,925
AuthRegistry:set_authorized	50.9 (+6%)	7,812
FPC:prepare_fee	251 (+3%)	11,068
Token:transfer_public	52.6 (-5%)	44,012
FPC:pay_refund	74.9 (+1%)	15,961
Benchmarking:increment_balance	1,063	11,281
Token:_increase_public_balance	⚠️ 18.5 (-78%)	15,006
FPC:pay_refund_with_shielded_rebate	⚠️ 135 (+106%)	17,056

Public DB Access

Time to access various public DBs.

Function	time_ms
get-nullifier-index	0.157

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	256 leaves	512 leaves	1024 leaves
batch_insert_into_append_only_tree_16_depth_ms	10.4	16.7	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_count	16.8	31.7	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_16_depth_hash_ms	0.601	0.514	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	48.0	75.9	131 (-1%)	245	473
batch_insert_into_append_only_tree_32_depth_hash_count	N/A	N/A	95.9	159	287	543	1,055
batch_insert_into_append_only_tree_32_depth_hash_ms	N/A	N/A	0.491	0.467	0.450 (-1%)	0.444	0.441
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	59.2 (-1%)	111	180 (-2%)	352	694 (-1%)
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	109	207	355	691	1,363
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.501 (-1%)	0.498	0.477 (-2%)	0.477	0.476
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	72.8	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	133	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	0.518	N/A	N/A	N/A	N/A

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	72,014	666,910

Transaction size based on fee payment method

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