feat: Add reset tiny and optimize tail

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Changes to circuit sizes

Generated at commit: a27e38daad72dc191897d4e17e72502ea374d8f3, compared to commit: 2a7494baec4396b9fa62f0a9c240b4b02f23fb1d

🧾 Summary (100% most significant diffs)

Program	ACIR opcodes (+/-)	%	Circuit size (+/-)	%
private_kernel_tail_to_public	-8,662 ✅	-12.21%	-11,615 ✅	-2.29%

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Full diff report 👇

Program	ACIR opcodes (+/-)	%	Circuit size (+/-)	%
private_kernel_tail_to_public	62,287 (-8,662)	-12.21%	496,502 (-11,615)	-2.29%

[AztecBot]

Benchmark results

Metrics with a significant change:

• avm_simulation_time_ms (Token:transfer_public): 55.2 (+71%)
• avm_simulation_time_ms (Token:_increase_public_balance): 16.4 (-81%)
• protocol_circuit_proving_time_in_ms (base-parity): 1,351 (-29%)

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	5,777 (+1%)	1,557 (+1%)	706 (+1%)	747 (+1%)	773 (+1%)
proof_construction_time_sha256_30_ms	11,853 (+1%)	3,172 (+1%)	1,408 (+1%)	1,437	1,470 (+1%)
proof_construction_time_sha256_100_ms	44,130 (+1%)	11,816	5,525 (+2%)	5,411 (+1%)	5,357
proof_construction_time_poseidon_hash_ms	78.0	34.0	34.0	59.0 (+2%)	88.0
proof_construction_time_poseidon_hash_30_ms	1,527 (+1%)	434 (+4%)	200 (+1%)	219 (-6%)	269
proof_construction_time_poseidon_hash_100_ms	5,654 (+1%)	1,527 (+1%)	679 (-1%)	747 (+2%)	745

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	6,588	6,586	6,588
l1_rollup_execution_gas	583,050	583,199	583,352
l2_block_processing_time_in_ms	760 (+1%)	1,435 (+1%)	2,697 (-1%)
l2_block_building_time_in_ms	13,125 (-1%)	26,137	50,393 (-2%)
l2_block_rollup_simulation_time_in_ms	13,125 (-1%)	26,137	50,392 (-2%)
l2_block_public_tx_process_time_in_ms	10,988 (-1%)	23,765	48,045 (-2%)

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	7,157 (+1%)	9,878 (-2%)
node_database_size_in_bytes	12,480,592	16,142,416
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	114 (-1%)	432 (+4%)	21,737	54,085	N/A	N/A	N/A	N/A
private-kernel-inner	229 (-7%)	755 (-4%)	81,199	54,264	N/A	N/A	N/A	N/A
private-kernel-tail	1,123	2,585 (+2%)	61,808	61,554	N/A	N/A	N/A	N/A
base-parity	6.66 (+2%)	831	160	96.0	⚠️ 1,351 (-29%)	12,676	3.00	131,072
root-parity	108	107 (-2%)	64,860	96.0	44,443	12,676	3.00	4,194,304
base-rollup	4,252	5,121 (+2%)	180,315	632	44,592 (+1%)	13,476	28.0	4,194,304
root-rollup	154	112	51,261	652	37,625	13,412	26.0	4,194,304
public-kernel-setup	195 (+1%)	2,388 (+1%)	112,536	80,310	19,952	118,916	3,323	2,097,152
public-kernel-app-logic	151	3,347 (-1%)	112,536	80,310	9,165 (+4%)	118,916	3,323	1,048,576
public-kernel-tail	898 (-1%)	26,902 (+3%)	409,413	10,046	65,742	24,868	384	8,388,608
private-kernel-reset-tiny	1,286	1,059	76,994	53,954	N/A	N/A	N/A	N/A
private-kernel-tail-to-public	6,793 (+11%)	2,958 (-3%)	777,415 (-11%)	1,632	N/A	N/A	N/A	N/A
public-kernel-teardown	140 (+1%)	3,393 (+3%)	112,536	80,310	20,331	118,916	3,323	2,097,152
merge-rollup	58.8	N/A	33,566	632	N/A	N/A	N/A	N/A
undefined	N/A	N/A	N/A	N/A	164,748 (+1%)	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	9,344	396	N/A	N/A
ContractInstanceDeployer:deploy	1,376	9,344	25.4	N/A	N/A
MultiCallEntrypoint:entrypoint	1,888	9,344	627	N/A	N/A
GasToken:deploy	1,344	9,344	570	N/A	N/A
SchnorrAccount:constructor	1,280	9,344	436	N/A	N/A
SchnorrAccount:entrypoint	2,272	9,344	765 (-1%)	N/A	N/A
Token:privately_mint_private_note	1,248	9,344	523	N/A	N/A
FPC:fee_entrypoint_public	1,312	9,344	104 (-3%)	N/A	N/A
Token:transfer	1,280	9,344	1,505 (+1%)	N/A	N/A
AuthRegistry:set_authorized (avm)	19,222	N/A	N/A	95,392	2,363 (-2%)
FPC:prepare_fee (avm)	26,664	N/A	N/A	95,456	3,125 (+4%)
Token:transfer_public (avm)	42,914	N/A	N/A	95,456	3,390 (-1%)
AuthRegistry:consume (avm)	33,100	N/A	N/A	95,424	3,059 (+2%)
FPC:pay_refund (avm)	36,829	N/A	N/A	95,424	10,291
Benchmarking:create_note	1,312	9,344	426	N/A	N/A
SchnorrAccount:verify_private_authwit	1,248	9,344	41.7 (+1%)	N/A	N/A
Token:unshield	1,344	9,344	1,185 (-1%)	N/A	N/A
FPC:fee_entrypoint_private	1,344	9,344	1,603 (+3%)	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	99.0 (+1%)	13,790
GasToken:set_portal	12.8 (+5%)	3,339
Token:constructor	123 (+1%)	23,692
FPC:constructor	90.9 (-3%)	13,592
GasToken:mint_public	81.9	10,158
Token:mint_public	70.0 (-29%)	19,034
Token:assert_minter_and_mint	70.5 (-2%)	12,925
AuthRegistry:set_authorized	43.5 (-8%)	7,812
FPC:prepare_fee	101 (-11%)	15,062
Token:transfer_public	⚠️ 55.2 (+71%)	31,218
FPC:pay_refund	130 (+6%)	25,260
Benchmarking:increment_balance	1,345	15,267
Token:_increase_public_balance	⚠️ 16.4 (-81%)	15,006
FPC:pay_refund_with_shielded_rebate	180 (+1%)	26,347

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	10.5 (+1%)	16.9	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	0.609 (+1%)	0.517	N/A	N/A	N/A	N/A	N/A
batch_insert_into_append_only_tree_32_depth_ms	N/A	N/A	48.4	76.0 (-1%)	130 (-1%)	251 (+2%)	469 (-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	0.495	0.467 (-1%)	0.449	0.455 (+2%)	0.438 (-1%)
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	59.8	111 (-1%)	182 (-1%)	354	691
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	0.505	0.499	0.483	0.480	0.474
batch_insert_into_indexed_tree_40_depth_ms	N/A	N/A	73.1	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	0.520	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	76,837	667,838

Transaction size based on fee payment method

| Metric | |
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[LeilaWang]

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