test: new cow optimization

[sirasistant]

…ir/noir-repo

subrepo:
subdir: "noir/noir-repo"
merged: "85ba5f688e"
upstream:
origin: "https://github.com/noir-lang/noir"
branch: "jf/brillig-cow-assign2"
commit: "85ba5f688e"
git-subrepo:
version: "0.4.6"
origin: "???"
commit: "???"

Please read contributing guidelines and remove this line.

[github-actions]

Changes to circuit sizes

Generated at commit: 3cc24647f3edb44a0784d9a3518a1573101983dd, compared to commit: 1519d3b07664f471a43d3f6bbb3dbe2d387289fc

🧾 Summary (100% most significant diffs)

Program	ACIR opcodes (+/-)	%	Circuit size (+/-)	%
private_kernel_tail	+49,026 ❌	+13.14%	+49,411 ❌	+5.89%

---

Full diff report 👇

Program	ACIR opcodes (+/-)	%	Circuit size (+/-)	%
private_kernel_tail	422,165 (+49,026)	+13.14%	888,656 (+49,411)	+5.89%

[AztecBot]

Benchmark results

Metrics with a significant change:

• circuit_simulation_time_in_ms (private-kernel-inner): 645 (+76%)
• circuit_simulation_time_in_ms (public-kernel-app-logic): 429 (+122%)
• tx_pxe_processing_time_ms (0): 3,821 (+31%)
• tx_pxe_processing_time_ms (1): 1,772 (+20%)
• tx_sequencer_processing_time_ms (1): 1,120 (+72%)
• l2_block_building_time_in_ms (8): 16,365 (+27%)
• l2_block_building_time_in_ms (32): 65,670 (+30%)
• l2_block_building_time_in_ms (64): 130,103 (+28%)
• l2_block_public_tx_process_time_in_ms (8): 8,931 (+72%)
• l2_block_public_tx_process_time_in_ms (32): 36,116 (+76%)
• l2_block_public_tx_process_time_in_ms (64): 71,017 (+74%)
• note_successful_decrypting_time_in_ms (8): 153 (-35%)
• note_trial_decrypting_time_in_ms (32): 100 (+163%)

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.

Values are compared against data from master at commit dc2fd9e5 and shown if the difference exceeds 1%.

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	5,668 (-1%)	18,820	36,356
l1_rollup_calldata_gas	65,728 (-1%)	238,372	469,364
l1_rollup_execution_gas	666,208 (-1%)	953,081 (-3%)	1,336,520 (-4%)
l2_block_processing_time_in_ms	1,298 (-3%)	4,819 (+1%)	9,534 (+6%)
note_successful_decrypting_time_in_ms	⚠️ 153 (-35%)	577 (-8%)	1,024 (+9%)
note_trial_decrypting_time_in_ms	58.1 (+46%)	⚠️ 100 (+163%)	58.0 (-24%)
l2_block_building_time_in_ms	⚠️ 16,365 (+27%)	⚠️ 65,670 (+30%)	⚠️ 130,103 (+28%)
l2_block_rollup_simulation_time_in_ms	7,396 (-3%)	29,429 (-2%)	58,901 (-3%)
l2_block_public_tx_process_time_in_ms	⚠️ 8,931 (+72%)	⚠️ 36,116 (+76%)	⚠️ 71,017 (+74%)

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	13,833 (-1%)	27,333 (-1%)
note_history_successful_decrypting_time_in_ms	1,231 (-13%)	2,464 (-8%)
note_history_trial_decrypting_time_in_ms	59.4 (-59%)	162 (+42%)
node_database_size_in_bytes	18,722,896 (-1%)	35,340,368 (-1%)
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	284	44,338 (-1%)	27,700 (-1%)
private-kernel-ordering	224 (+6%)	52,324 (-1%)	14,326 (-2%)
base-rollup	668 (-3%)	177,083	925 (-7%)
root-rollup	68.2 (-4%)	4,176 (-3%)	789 (-4%)
private-kernel-inner	⚠️ 645 (+76%)	73,197 (-1%)	27,700 (-1%)
public-kernel-app-logic	⚠️ 429 (+122%)	34,582 (-1%)	27,671 (-1%)
public-kernel-tail	93.2 (-1%)	34,206 (-1%)	27,671 (-1%)
merge-rollup	8.29 (-8%)	2,696 (-5%)	925 (-7%)

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	10.2 (+3%)	15.9 (-1%)	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 (-1%)	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	0.597 (+3%)	0.491 (-1%)	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	46.3 (-1%)	72.5 (+1%)	230	442	883 (+2%)	1,720	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	0.475	0.447 (+1%)	0.420	0.415	0.419 (+2%)	0.412	N/A
batch_insert_into_indexed_tree_20_depth_ms	N/A	N/A	53.6 (-3%)	106	343 (+1%)	656 (-2%)	1,319 (+1%)	2,630 (+1%)	N/A
batch_insert_into_indexed_tree_20_depth_hash_count	N/A	N/A	104	207	691	1,363	2,707	5,395	N/A
batch_insert_into_indexed_tree_20_depth_hash_ms	N/A	N/A	0.478 (-3%)	0.480	0.464 (+1%)	0.453 (-2%)	0.456 (+1%)	0.457	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	61.2 (-3%)
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
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	0.535 (-3%)

Miscellaneous

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

Metric	0 registered classes
tx_size_in_bytes	19,661

Transaction processing duration by data writes.

Metric	0 new note hashes	1 new note hashes
tx_pxe_processing_time_ms	⚠️ 3,821 (+31%)	⚠️ 1,772 (+20%)

Metric	0 public data writes	1 public data writes
tx_sequencer_processing_time_ms	9.50 (+5%)	⚠️ 1,120 (+72%)

[TomAFrench]

Closing in favour of #5136 and #5134