feat: calculate FunctionSelectors and EventSelectors during comptime

[TomAFrench]

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[AztecBot]

Benchmark results

Metrics with a significant change:

• protocol_circuit_simulation_time_in_ms (private-kernel-tail-to-public): 1,388 (+81%)
• avm_simulation_time_ms (Token:mint_public): 468 (+853%)
• avm_simulation_time_ms (Token:assert_minter_and_mint): 46.6 (-90%)
• avm_simulation_time_ms (FPC:prepare_fee): 77.8 (-61%)
• avm_simulation_time_ms (Token:transfer_public): 27.6 (+97%)
• avm_simulation_bytecode_size_in_bytes (Token:transfer_public): 10,812 (-50%)
• protocol_circuit_proving_time_in_ms (undefined): 109,672 (+26%)

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	5,756	1,563	716	744 (-2%)	774
proof_construction_time_sha256_30_ms	11,472	3,098	1,378 (-1%)	1,429	1,467 (+1%)
proof_construction_time_sha256_100_ms	44,187	11,872	5,494 (+1%)	5,535 (-2%)	5,650
proof_construction_time_poseidon_hash_ms	78.0	34.0 (-3%)	34.0	59.0	87.0 (-2%)
proof_construction_time_poseidon_hash_30_ms	1,527	422	204	224 (-3%)	268
proof_construction_time_poseidon_hash_100_ms	5,643	1,514	679 (+1%)	737 (+3%)	747 (+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	4,356	7,876	14,884
l1_rollup_calldata_gas	50,232	92,996	178,144
l1_rollup_execution_gas	843,051	1,576,711	3,361,915
l2_block_processing_time_in_ms	252	447	809 (-1%)
l2_block_building_time_in_ms	11,222 (+1%)	22,059	43,935 (+1%)
l2_block_rollup_simulation_time_in_ms	11,221 (+1%)	22,058	43,935 (+1%)
l2_block_public_tx_process_time_in_ms	9,576 (+1%)	20,388	42,234 (+1%)

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	2,968 (-2%)	3,955 (+1%)
node_database_size_in_bytes	12,607,568	16,658,512
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
private-kernel-init	78.6 (+6%)	385 (+1%)	21,391	44,898	N/A
private-kernel-inner	156 (-2%)	681 (+1%)	72,372	45,020	N/A
private-kernel-reset-tiny	294 (-1%)	706 (-3%)	65,097	44,886	N/A
private-kernel-tail	160 (+1%)	133 (+2%)	50,608	52,921	N/A
base-parity	5.55 (-1%)	N/A	160	96.0	N/A
root-parity	35.2 (+1%)	N/A	73,948	96.0	N/A
base-rollup	3,083 (+4%)	N/A	189,193	664	N/A
block-root-rollup	41.2 (+1%)	N/A	58,205	2,448	N/A
public-kernel-setup	82.5 (+1%)	N/A	105,085	71,222	N/A
public-kernel-app-logic	94.5	N/A	104,899	71,222	N/A
public-kernel-tail	844	N/A	390,582	16,414	N/A
private-kernel-reset-small	297	N/A	66,341	45,629	N/A
private-kernel-tail-to-public	⚠️ 1,388 (+81%)	595 (+1%)	453,751	1,825	N/A
public-kernel-teardown	82.4 (+3%)	N/A	105,349	71,222	N/A
merge-rollup	20.1	N/A	38,174	664	N/A
undefined	N/A	N/A	N/A	N/A	⚠️ 109,672 (+26%)

Stats on running time collected for app circuits

Function	input_size_in_bytes	output_size_in_bytes	witness_generation_time_in_ms
ContractClassRegisterer:register	1,344	11,731	347 (+2%)
ContractInstanceDeployer:deploy	1,408	11,731	18.1
MultiCallEntrypoint:entrypoint	1,920	11,731	402 (+1%)
FeeJuice:deploy	1,376	11,731	393 (+2%)
SchnorrAccount:constructor	1,312	11,731	62.6 (+1%)
SchnorrAccount:entrypoint	2,336	11,731	370 (-1%)
FeeJuice:claim	1,344	11,731	36.3 (+1%)
Token:privately_mint_private_note	1,280	11,731	75.7 (-3%)
FPC:fee_entrypoint_public	1,344	11,731	26.7 (-1%)
Token:transfer	1,312	11,731	213 (-1%)
Benchmarking:create_note	1,344	11,731	74.6 (-1%)
SchnorrAccount:verify_private_authwit	1,280	11,731	29.9 (+13%)
Token:unshield	1,376	11,731	506 (+1%)
FPC:fee_entrypoint_private	1,376	11,731	663 (-10%)

AVM Simulation

Time to simulate various public functions in the AVM.

Function	time_ms	bytecode_size_in_bytes
FeeJuice:_increase_public_balance	44.6 (-2%)	2,431
FeeJuice:set_portal	14.6 (+11%)	2,930
Token:constructor	80.2 (+7%)	15,813
FPC:constructor	47.8 (-4%)	9,720
FeeJuice:check_balance	36.8 (-1%)	2,357
Token:mint_public	⚠️ 468 (+853%)	5,011
Token:assert_minter_and_mint	⚠️ 46.6 (-90%)	3,155
AuthRegistry:set_authorized	36.6 (+4%)	924
FPC:prepare_fee	⚠️ 77.8 (-61%)	4,245
Token:transfer_public	⚠️ 27.6 (+97%)	⚠️ 10,812 (-50%)
FPC:pay_refund	46.1 (+10%)	5,195
Benchmarking:increment_balance	1,203	3,496
Token:_increase_public_balance	40.1 (+5%)	2,408
FPC:pay_refund_with_shielded_rebate	54.3 (+4%)	5,195

Public DB Access

Time to access various public DBs.

Function	time_ms
get-nullifier-index	0.155 (+1%)

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	2.13 (-1%)	3.88 (+1%)	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	0.111	0.109	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	11.0	17.5	30.5 (+1%)	59.6 (-1%)	112 (-1%)
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	0.106	0.102	0.0995 (+1%)	0.102 (-1%)	0.100
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	14.2	25.2 (-2%)	43.1 (+1%)	82.3 (-1%)	158 (-2%)
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	108	207	355	691	1,363
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.109	0.101 (-1%)	0.101 (-2%)	0.102 (-1%)	0.0999 (-1%)
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	16.5	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_count	N/A	N/A	132	N/A	N/A	N/A	N/A
batch_insert_into_indexed_tree_40_depth_hash_ms	N/A	N/A	0.106	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	64,838	668,997

Transaction size based on fee payment method

| Metric | |
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[vezenovm]

🚀

In a follow-up we can generate these comptime blocks with macros so we don't even need them in aztec-nr.

[fcarreiro]

Bravo!