Paul Hauner 11d80a6a38 Optimise per_epoch_processing low-hanging-fruit (#3254) ... ## Issue Addressed NA ## Proposed Changes - Uses a `Vec` in `SingleEpochParticipationCache` rather than `HashMap` to speed up processing times at the cost of memory usage. - Cache the result of `integer_sqrt` rather than recomputing for each validator. - Cache `state.previous_epoch` rather than recomputing it for each validator. ### Benchmarks Benchmarks on a recent mainnet state using #3252 to get timing. #### Without this PR ``` lcli skip-slots --state-path /tmp/state-0x3cdc.ssz --partial-state-advance --slots 32 --state-root 0x3cdc33cd02713d8d6cc33a6dbe2d3a5bf9af1d357de0d175a403496486ff845e --runs 10 [2022-06-09T08:21:02Z INFO lcli::skip_slots] Using mainnet spec [2022-06-09T08:21:02Z INFO lcli::skip_slots] Advancing 32 slots [2022-06-09T08:21:02Z INFO lcli::skip_slots] Doing 10 runs [2022-06-09T08:21:02Z INFO lcli::skip_slots] State path: "/tmp/state-0x3cdc.ssz" SSZ decoding /tmp/state-0x3cdc.ssz: 43ms [2022-06-09T08:21:03Z INFO lcli::skip_slots] Run 0: 245.718794ms [2022-06-09T08:21:03Z INFO lcli::skip_slots] Run 1: 245.364782ms [2022-06-09T08:21:03Z INFO lcli::skip_slots] Run 2: 255.866179ms [2022-06-09T08:21:04Z INFO lcli::skip_slots] Run 3: 243.838909ms [2022-06-09T08:21:04Z INFO lcli::skip_slots] Run 4: 250.431425ms [2022-06-09T08:21:04Z INFO lcli::skip_slots] Run 5: 248.68765ms [2022-06-09T08:21:04Z INFO lcli::skip_slots] Run 6: 262.051113ms [2022-06-09T08:21:05Z INFO lcli::skip_slots] Run 7: 264.293967ms [2022-06-09T08:21:05Z INFO lcli::skip_slots] Run 8: 293.202007ms [2022-06-09T08:21:05Z INFO lcli::skip_slots] Run 9: 264.552017ms ``` #### With this PR: ``` lcli skip-slots --state-path /tmp/state-0x3cdc.ssz --partial-state-advance --slots 32 --state-root 0x3cdc33cd02713d8d6cc33a6dbe2d3a5bf9af1d357de0d175a403496486ff845e --runs 10 [2022-06-09T08:57:59Z INFO lcli::skip_slots] Run 0: 73.898678ms [2022-06-09T08:57:59Z INFO lcli::skip_slots] Run 1: 75.536978ms [2022-06-09T08:57:59Z INFO lcli::skip_slots] Run 2: 75.176104ms [2022-06-09T08:57:59Z INFO lcli::skip_slots] Run 3: 76.460828ms [2022-06-09T08:57:59Z INFO lcli::skip_slots] Run 4: 75.904195ms [2022-06-09T08:58:00Z INFO lcli::skip_slots] Run 5: 75.53077ms [2022-06-09T08:58:00Z INFO lcli::skip_slots] Run 6: 74.745572ms [2022-06-09T08:58:00Z INFO lcli::skip_slots] Run 7: 75.823489ms [2022-06-09T08:58:00Z INFO lcli::skip_slots] Run 8: 74.892055ms [2022-06-09T08:58:00Z INFO lcli::skip_slots] Run 9: 76.333569ms ``` ## Additional Info NA		2022-06-10 04:29:28 +00:00
..
src	Optimise per_epoch_processing low-hanging-fruit (#3254)	2022-06-10 04:29:28 +00:00
Cargo.toml	Update and consolidate dependencies (#3136)	2022-04-04 00:26:16 +00:00