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lighthouse/consensus/types/src
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Michael Sproul da4ca024f1 Use SmallVec in Bitfield (#3025) 
## Issue Addressed

Alternative to #2935

## Proposed Changes

Replace the `Vec<u8>` inside `Bitfield` with a `SmallVec<[u8; 32>`. This eliminates heap allocations for attestation bitfields until we reach 500K validators, at which point we can consider increasing `SMALLVEC_LEN` to 40 or 48.

While running Lighthouse under `heaptrack` I found that SSZ encoding and decoding of bitfields corresponded to 22% of all allocations by count. I've confirmed that with this change applied those allocations disappear entirely.

## Additional Info

We can win another 8 bytes of space by using `smallvec`'s [`union` feature](https://docs.rs/smallvec/1.8.0/smallvec/#union), although I might leave that for a future PR because I don't know how experimental that feature is and whether it uses some spicy `unsafe` blocks.
2022-02-17 23:55:04 +00:00
..
beacon_state v1.1.1 spec updates (#2684) 2021-12-02 14:26:54 +11:00
test_utils Use SmallVec in Bitfield (#3025) 2022-02-17 23:55:04 +00:00
aggregate_and_proof.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
attestation_data.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
attestation_duty.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
attestation.rs Use SmallVec in Bitfield (#3025) 2022-02-17 23:55:04 +00:00
attester_slashing.rs Update for clippy 1.50 (#2193) 2021-02-15 00:09:12 +00:00
beacon_block_body.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
beacon_block_header.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
beacon_block.rs Update to spec v1.1.8 (#2893) 2022-01-19 00:24:19 +00:00
beacon_committee.rs Directory Restructure (#1163) 2020-05-18 21:24:23 +10:00
beacon_state.rs Fix consensus, SSZ, tree hash & run merge EF tests (#2622) 2021-12-02 14:26:50 +11:00
chain_spec.rs Update to consensus-specs v1.1.9 (#3016) 2022-02-14 23:57:23 +00:00
checkpoint.rs Bump all spec tags to v0.12.1 (#1275) 2020-06-19 11:18:27 +10:00
config_and_preset.rs Update to consensus-specs v1.1.9 (#3016) 2022-02-14 23:57:23 +00:00
consts.rs v1.1.6 Fork Choice changes (#2822) 2021-12-13 20:43:22 +00:00
contribution_and_proof.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
deposit_data.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
deposit_message.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
deposit.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
enr_fork_id.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
eth1_data.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
eth_spec.rs Native support for Gnosis Beacon Chain network (#2931) 2022-01-27 22:58:33 +00:00
execution_payload_header.rs Update to consensus-specs v1.1.9 (#3016) 2022-02-14 23:57:23 +00:00
execution_payload.rs Update to consensus-specs v1.1.9 (#3016) 2022-02-14 23:57:23 +00:00
fork_context.rs Update to spec v1.1.8 (#2893) 2022-01-19 00:24:19 +00:00
fork_data.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
fork_name.rs Update to spec v1.1.8 (#2893) 2022-01-19 00:24:19 +00:00
fork.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
free_attestation.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
graffiti.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
historical_batch.rs Bump all spec tags to v0.12.1 (#1275) 2020-06-19 11:18:27 +10:00
indexed_attestation.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
lib.rs Allow per validator fee recipient via flag or file in validator client (similar to graffiti / graffiti-file) (#2924) 2022-02-08 19:52:20 +00:00
participation_flags.rs Quoted altair fields (2.0) (#2712) 2021-10-14 02:58:12 +00:00
participation_list.rs Rust 1.54.0 lints (#2483) 2021-07-30 01:11:47 +00:00
pending_attestation.rs Get arbitrary check passing (2.0) (#2710) 2021-10-14 02:58:11 +00:00
preset.rs Native support for Gnosis Beacon Chain network (#2931) 2022-01-27 22:58:33 +00:00
proposer_preparation_data.rs Allow per validator fee recipient via flag or file in validator client (similar to graffiti / graffiti-file) (#2924) 2022-02-08 19:52:20 +00:00
proposer_slashing.rs Implement slasher (#1567) 2020-11-23 03:43:22 +00:00
relative_epoch.rs Remove saturating arith from state_processing (#1644) 2020-09-25 05:18:21 +00:00
selection_proof.rs Altair consensus changes and refactors (#2279) 2021-07-09 06:15:32 +00:00
shuffling_id.rs Optimize validator duties (#2243) 2021-03-17 05:09:57 +00:00
signed_aggregate_and_proof.rs [Altair] Sync committee pools (#2321) 2021-07-15 00:52:02 +00:00
signed_beacon_block_header.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
signed_beacon_block.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
signed_contribution_and_proof.rs [Altair] Sync committee pools (#2321) 2021-07-15 00:52:02 +00:00
signed_voluntary_exit.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
signing_data.rs Consensus updates for v0.12 (#1228) 2020-06-03 14:56:54 +10:00
slot_data.rs [Altair] Sync committee pools (#2321) 2021-07-15 00:52:02 +00:00
slot_epoch_macros.rs Updated to comply with new clippy formatting rules (#2336) 2021-05-10 00:53:09 +00:00
slot_epoch.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
sqlite.rs Directory Restructure (#1163) 2020-05-18 21:24:23 +10:00
subnet_id.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
sync_aggregate.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
sync_aggregator_selection_data.rs Web3Signer support for VC (#2522) 2021-09-16 03:26:33 +00:00
sync_committee_contribution.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
sync_committee_message.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
sync_committee_subscription.rs Add quoted u64/u64_vec to SyncCommitteeSubscription (#2589) 2021-09-11 23:56:16 +00:00
sync_committee.rs Validator monitor support for sync committees (#2476) 2021-08-31 23:31:36 +00:00
sync_duty.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
sync_selection_proof.rs [Altair] Sync committee pools (#2321) 2021-07-15 00:52:02 +00:00
sync_subnet_id.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
tree_hash_impls.rs Rust 1.54.0 lints (#2483) 2021-07-30 01:11:47 +00:00
validator_subscription.rs Implement standard eth2.0 API (#1569) 2020-10-01 11:12:36 +10:00
validator.rs Updates to make crates publishable (#2472) 2021-09-03 01:10:25 +00:00
voluntary_exit.rs Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00