feat: add input support for chained transactions ("pending_read_requests" in private kernel circuit)

[dan-aztec]

starting first few task in https://hackmd.io/G0uD0r52Qca89BCINuDByQ

this adds a "non functional" pending_read_requests array to the private kernel circuit inputs and accumualtors, and updates the typescript types.

the pending reads are not used though - it is merely a placeholder input for follow up implementation.

[AztecBot]

Benchmark 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 20ad5779 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	128 txs
l1_rollup_calldata_size_in_bytes	45,444	179,588	716,132
l1_rollup_calldata_gas	222,972	868,268	3,449,468
l1_rollup_execution_gas	842,059	3,595,376	22,204,837
l2_block_processing_time_in_ms	1,026 (-1%)	3,886 (-1%)	15,191 (-3%)
note_successful_decrypting_time_in_ms	332	1,030 (+1%)	3,870 (+3%)
note_trial_decrypting_time_in_ms	36.0 (+6%)	108 (+1%)	137 (+1%)
l2_block_building_time_in_ms	8,937 (-1%)	35,889 (-1%)	155,640 (+3%)
l2_block_rollup_simulation_time_in_ms	6,594 (-1%)	26,565 (-1%)	104,136 (-2%)
l2_block_public_tx_process_time_in_ms	2,305 (+1%)	9,202	⚠️ 50,900 (+13%)

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	11,353 (-2%)	21,604 (-3%)
note_history_successful_decrypting_time_in_ms	2,365	4,603 (-4%)
note_history_trial_decrypting_time_in_ms	122 (-2%)	⚠️ 206 (+39%)
node_database_size_in_bytes	1,662,634	1,201,203
pxe_database_size_in_bytes	27,188	54,187

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	46.2 (+6%)	61,697 (+9%)	⚠️ 18,841 (+28%)
private-kernel-ordering	23.1 (+9%)	⚠️ 24,233 (+20%)	8,089
base-rollup	850	639,797 (+1%)	811
root-rollup	38.8 (+2%)	4,072	1,097
private-kernel-inner	⚠️ 40.7 (+13%)	⚠️ 81,504 (+13%)	⚠️ 18,841 (+28%)
public-kernel-private-input	46.9 (-1%)	⚠️ 41,455 (+11%)	⚠️ 18,841 (+28%)
public-kernel-non-first-iteration	⚠️ 30.9 (+11%)	⚠️ 41,497 (+11%)	⚠️ 18,841 (+28%)
merge-rollup	0.891 (+9%)	2,592	873

Miscellaneous

Transaction sizes based on how many contracts are deployed in the tx.

Metric	0 deployed contracts	1 deployed contracts
tx_size_in_bytes	8,723	27,508 (+2%)