Use EpochContext.epoch as current epoch

[twoeths]

Motivation

• Use shorter way to get current epoch

Description

• Change epochCtx.currentShuffling.epoch to epochCtx.epoch

[github-actions]

Performance Report

✔️ no performance regression detected

Full benchmark results

Benchmark suite	Current: 057b1be	Previous: 5c90db6	Ratio
getPubkeys - index2pubkey - req 1000 vs - 250000 vc	2.9561 ms/op	2.2013 ms/op	1.34
getPubkeys - validatorsArr - req 1000 vs - 250000 vc	82.654 us/op	72.094 us/op	1.15
BLS verify - blst-native	2.1696 ms/op	1.8581 ms/op	1.17
BLS verifyMultipleSignatures 3 - blst-native	4.4814 ms/op	3.8064 ms/op	1.18
BLS verifyMultipleSignatures 8 - blst-native	9.6955 ms/op	8.1874 ms/op	1.18
BLS verifyMultipleSignatures 32 - blst-native	35.285 ms/op	29.678 ms/op	1.19
BLS aggregatePubkeys 32 - blst-native	46.805 us/op	39.114 us/op	1.20
BLS aggregatePubkeys 128 - blst-native	182.88 us/op	152.97 us/op	1.20
getAttestationsForBlock	58.300 ms/op	45.141 ms/op	1.29
isKnown best case - 1 super set check	504.00 ns/op	430.00 ns/op	1.17
isKnown normal case - 2 super set checks	486.00 ns/op	418.00 ns/op	1.16
isKnown worse case - 16 super set checks	489.00 ns/op	428.00 ns/op	1.14
CheckpointStateCache - add get delete	13.791 us/op	11.204 us/op	1.23
validate gossip signedAggregateAndProof - struct	5.0497 ms/op	4.2834 ms/op	1.18
validate gossip attestation - struct	2.3734 ms/op	2.0287 ms/op	1.17
altair verifyImport mainnet_s3766816:31	12.603 s/op	12.271 s/op	1.03
pickEth1Vote - no votes	2.7739 ms/op	2.0926 ms/op	1.33
pickEth1Vote - max votes	35.003 ms/op	24.276 ms/op	1.44
pickEth1Vote - Eth1Data hashTreeRoot value x2048	15.715 ms/op	11.765 ms/op	1.34
pickEth1Vote - Eth1Data hashTreeRoot tree x2048	29.294 ms/op	22.254 ms/op	1.32
pickEth1Vote - Eth1Data fastSerialize value x2048	1.6504 ms/op	1.5866 ms/op	1.04
pickEth1Vote - Eth1Data fastSerialize tree x2048	26.105 ms/op	18.852 ms/op	1.38
bytes32 toHexString	1.5600 us/op	1.1430 us/op	1.36
bytes32 Buffer.toString(hex)	905.00 ns/op	729.00 ns/op	1.24
bytes32 Buffer.toString(hex) from Uint8Array	1.2050 us/op	974.00 ns/op	1.24
bytes32 Buffer.toString(hex) + 0x	914.00 ns/op	720.00 ns/op	1.27
Object access 1 prop	0.52200 ns/op	0.40100 ns/op	1.30
Map access 1 prop	0.35700 ns/op	0.29600 ns/op	1.21
Object get x1000	11.468 ns/op	18.022 ns/op	0.64
Map get x1000	0.93800 ns/op	1.0190 ns/op	0.92
Object set x1000	118.24 ns/op	131.29 ns/op	0.90
Map set x1000	77.817 ns/op	79.494 ns/op	0.98
Return object 10000 times	0.45090 ns/op	0.37000 ns/op	1.22
Throw Error 10000 times	6.2321 us/op	6.0114 us/op	1.04
enrSubnets - fastDeserialize 64 bits	4.0750 us/op	2.9450 us/op	1.38
enrSubnets - ssz BitVector 64 bits	973.00 ns/op	755.00 ns/op	1.29
enrSubnets - fastDeserialize 4 bits	562.00 ns/op	435.00 ns/op	1.29
enrSubnets - ssz BitVector 4 bits	1.0130 us/op	796.00 ns/op	1.27
prioritizePeers score -10:0 att 32-0.1 sync 2-0	107.30 us/op	98.767 us/op	1.09
prioritizePeers score 0:0 att 32-0.25 sync 2-0.25	118.86 us/op	124.87 us/op	0.95
prioritizePeers score 0:0 att 32-0.5 sync 2-0.5	251.78 us/op	219.35 us/op	1.15
prioritizePeers score 0:0 att 64-0.75 sync 4-0.75	486.53 us/op	473.02 us/op	1.03
prioritizePeers score 0:0 att 64-1 sync 4-1	419.13 us/op	458.73 us/op	0.91
RateTracker 1000000 limit, 1 obj count per request	220.99 ns/op	195.72 ns/op	1.13
RateTracker 1000000 limit, 2 obj count per request	167.84 ns/op	147.52 ns/op	1.14
RateTracker 1000000 limit, 4 obj count per request	141.75 ns/op	124.69 ns/op	1.14
RateTracker 1000000 limit, 8 obj count per request	129.21 ns/op	114.31 ns/op	1.13
RateTracker with prune	7.2050 us/op	4.8810 us/op	1.48
array of 16000 items push then shift	51.693 us/op	3.1755 us/op	16.28
LinkedList of 16000 items push then shift	21.947 ns/op	25.249 ns/op	0.87
array of 16000 items push then pop	271.52 ns/op	262.13 ns/op	1.04
LinkedList of 16000 items push then pop	17.592 ns/op	21.137 ns/op	0.83
array of 24000 items push then shift	77.474 us/op	4.5543 us/op	17.01
LinkedList of 24000 items push then shift	32.118 ns/op	26.452 ns/op	1.21
array of 24000 items push then pop	249.16 ns/op	203.18 ns/op	1.23
LinkedList of 24000 items push then pop	21.039 ns/op	21.301 ns/op	0.99
intersect bitArray bitLen 8	11.138 ns/op	11.747 ns/op	0.95
intersect array and set length 8	211.42 ns/op	198.67 ns/op	1.06
intersect bitArray bitLen 128	55.704 ns/op	62.041 ns/op	0.90
intersect array and set length 128	2.2846 us/op	2.4572 us/op	0.93
pass gossip attestations to forkchoice per slot	3.5773 ms/op	3.1583 ms/op	1.13
computeDeltas	4.2735 ms/op	3.1686 ms/op	1.35
computeProposerBoostScoreFromBalances	809.74 us/op	907.95 us/op	0.89
altair processAttestation - 250000 vs - 7PWei normalcase	5.0746 ms/op	4.5558 ms/op	1.11
altair processAttestation - 250000 vs - 7PWei worstcase	7.1735 ms/op	6.4049 ms/op	1.12
altair processAttestation - setStatus - 1/6 committees join	213.34 us/op	213.85 us/op	1.00
altair processAttestation - setStatus - 1/3 committees join	396.58 us/op	407.28 us/op	0.97
altair processAttestation - setStatus - 1/2 committees join	548.54 us/op	567.18 us/op	0.97
altair processAttestation - setStatus - 2/3 committees join	702.02 us/op	732.84 us/op	0.96
altair processAttestation - setStatus - 4/5 committees join	1.0062 ms/op	1.0129 ms/op	0.99
altair processAttestation - setStatus - 100% committees join	1.1928 ms/op	1.2036 ms/op	0.99
altair processBlock - 250000 vs - 7PWei normalcase	30.479 ms/op	27.277 ms/op	1.12
altair processBlock - 250000 vs - 7PWei normalcase hashState	44.441 ms/op	38.957 ms/op	1.14
altair processBlock - 250000 vs - 7PWei worstcase	90.718 ms/op	74.492 ms/op	1.22
altair processBlock - 250000 vs - 7PWei worstcase hashState	115.35 ms/op	96.304 ms/op	1.20
phase0 processBlock - 250000 vs - 7PWei normalcase	6.5998 ms/op	4.4562 ms/op	1.48
phase0 processBlock - 250000 vs - 7PWei worstcase	55.555 ms/op	48.122 ms/op	1.15
altair processEth1Data - 250000 vs - 7PWei normalcase	1.0142 ms/op	895.54 us/op	1.13
Tree 40 250000 create	1.3551 s/op	788.38 ms/op	1.72
Tree 40 250000 get(125000)	256.93 ns/op	291.86 ns/op	0.88
Tree 40 250000 set(125000)	4.3428 us/op	2.5013 us/op	1.74
Tree 40 250000 toArray()	37.204 ms/op	31.713 ms/op	1.17
Tree 40 250000 iterate all - toArray() + loop	37.348 ms/op	31.769 ms/op	1.18
Tree 40 250000 iterate all - get(i)	121.50 ms/op	112.16 ms/op	1.08
MutableVector 250000 create	17.005 ms/op	16.734 ms/op	1.02
MutableVector 250000 get(125000)	10.948 ns/op	13.255 ns/op	0.83
MutableVector 250000 set(125000)	1.0907 us/op	671.53 ns/op	1.62
MutableVector 250000 toArray()	8.1563 ms/op	7.7667 ms/op	1.05
MutableVector 250000 iterate all - toArray() + loop	8.4084 ms/op	6.8381 ms/op	1.23
MutableVector 250000 iterate all - get(i)	2.6626 ms/op	3.2790 ms/op	0.81
Array 250000 create	8.0672 ms/op	6.0278 ms/op	1.34
Array 250000 clone - spread	8.5744 ms/op	2.5970 ms/op	3.30
Array 250000 get(125000)	3.2070 ns/op	1.1510 ns/op	2.79
Array 250000 set(125000)	3.2180 ns/op	1.1510 ns/op	2.80
Array 250000 iterate all - loop	174.94 us/op	167.82 us/op	1.04
effectiveBalanceIncrements clone Uint8Array 300000	119.66 us/op	80.777 us/op	1.48
effectiveBalanceIncrements clone MutableVector 300000	2.7260 us/op	802.00 ns/op	3.40
effectiveBalanceIncrements rw all Uint8Array 300000	247.59 us/op	252.48 us/op	0.98
effectiveBalanceIncrements rw all MutableVector 300000	346.53 ms/op	179.66 ms/op	1.93
phase0 afterProcessEpoch - 250000 vs - 7PWei	196.37 ms/op	185.86 ms/op	1.06
phase0 beforeProcessEpoch - 250000 vs - 7PWei	107.23 ms/op	71.710 ms/op	1.50
altair processEpoch - mainnet_e81889	622.53 ms/op	499.91 ms/op	1.25
mainnet_e81889 - altair beforeProcessEpoch	141.11 ms/op	150.81 ms/op	0.94
mainnet_e81889 - altair processJustificationAndFinalization	17.164 us/op	20.149 us/op	0.85
mainnet_e81889 - altair processInactivityUpdates	10.950 ms/op	10.591 ms/op	1.03
mainnet_e81889 - altair processRewardsAndPenalties	138.63 ms/op	93.734 ms/op	1.48
mainnet_e81889 - altair processRegistryUpdates	2.9640 us/op	3.1470 us/op	0.94
mainnet_e81889 - altair processSlashings	587.00 ns/op	617.00 ns/op	0.95
mainnet_e81889 - altair processEth1DataReset	634.00 ns/op	878.00 ns/op	0.72
mainnet_e81889 - altair processEffectiveBalanceUpdates	2.1636 ms/op	2.2839 ms/op	0.95
mainnet_e81889 - altair processSlashingsReset	4.5280 us/op	5.7680 us/op	0.79
mainnet_e81889 - altair processRandaoMixesReset	4.1100 us/op	5.5880 us/op	0.74
mainnet_e81889 - altair processHistoricalRootsUpdate	712.00 ns/op	998.00 ns/op	0.71
mainnet_e81889 - altair processParticipationFlagUpdates	2.4350 us/op	2.9930 us/op	0.81
mainnet_e81889 - altair processSyncCommitteeUpdates	695.00 ns/op	852.00 ns/op	0.82
mainnet_e81889 - altair afterProcessEpoch	205.11 ms/op	197.60 ms/op	1.04
phase0 processEpoch - mainnet_e58758	551.30 ms/op	527.19 ms/op	1.05
mainnet_e58758 - phase0 beforeProcessEpoch	228.35 ms/op	224.36 ms/op	1.02
mainnet_e58758 - phase0 processJustificationAndFinalization	17.521 us/op	19.485 us/op	0.90
mainnet_e58758 - phase0 processRewardsAndPenalties	139.40 ms/op	137.02 ms/op	1.02
mainnet_e58758 - phase0 processRegistryUpdates	8.2370 us/op	9.7270 us/op	0.85
mainnet_e58758 - phase0 processSlashings	593.00 ns/op	766.00 ns/op	0.77
mainnet_e58758 - phase0 processEth1DataReset	604.00 ns/op	768.00 ns/op	0.79
mainnet_e58758 - phase0 processEffectiveBalanceUpdates	3.5779 ms/op	2.2309 ms/op	1.60
mainnet_e58758 - phase0 processSlashingsReset	4.0270 us/op	4.7390 us/op	0.85
mainnet_e58758 - phase0 processRandaoMixesReset	4.3970 us/op	5.3350 us/op	0.82
mainnet_e58758 - phase0 processHistoricalRootsUpdate	747.00 ns/op	923.00 ns/op	0.81
mainnet_e58758 - phase0 processParticipationRecordUpdates	3.8490 us/op	4.6900 us/op	0.82
mainnet_e58758 - phase0 afterProcessEpoch	168.71 ms/op	161.42 ms/op	1.05
phase0 processEffectiveBalanceUpdates - 250000 normalcase	2.0843 ms/op	2.5432 ms/op	0.82
phase0 processEffectiveBalanceUpdates - 250000 worstcase 0.5	2.3225 ms/op	3.0700 ms/op	0.76
altair processInactivityUpdates - 250000 normalcase	43.479 ms/op	41.288 ms/op	1.05
altair processInactivityUpdates - 250000 worstcase	43.396 ms/op	51.839 ms/op	0.84
phase0 processRegistryUpdates - 250000 normalcase	6.8030 us/op	7.7510 us/op	0.88
phase0 processRegistryUpdates - 250000 badcase_full_deposits	382.63 us/op	402.14 us/op	0.95
phase0 processRegistryUpdates - 250000 worstcase 0.5	221.53 ms/op	214.26 ms/op	1.03
altair processRewardsAndPenalties - 250000 normalcase	94.791 ms/op	125.85 ms/op	0.75
altair processRewardsAndPenalties - 250000 worstcase	126.65 ms/op	105.11 ms/op	1.20
phase0 getAttestationDeltas - 250000 normalcase	14.537 ms/op	12.422 ms/op	1.17
phase0 getAttestationDeltas - 250000 worstcase	14.984 ms/op	12.000 ms/op	1.25
phase0 processSlashings - 250000 worstcase	5.6309 ms/op	5.4598 ms/op	1.03
altair processSyncCommitteeUpdates - 250000	322.64 ms/op	279.76 ms/op	1.15
BeaconState.hashTreeRoot - No change	826.00 ns/op	466.00 ns/op	1.77
BeaconState.hashTreeRoot - 1 full validator	66.306 us/op	56.696 us/op	1.17
BeaconState.hashTreeRoot - 32 full validator	676.79 us/op	554.47 us/op	1.22
BeaconState.hashTreeRoot - 512 full validator	8.2300 ms/op	6.1555 ms/op	1.34
BeaconState.hashTreeRoot - 1 validator.effectiveBalance	86.885 us/op	69.669 us/op	1.25
BeaconState.hashTreeRoot - 32 validator.effectiveBalance	1.1566 ms/op	967.61 us/op	1.20
BeaconState.hashTreeRoot - 512 validator.effectiveBalance	16.353 ms/op	12.915 ms/op	1.27
BeaconState.hashTreeRoot - 1 balances	65.511 us/op	53.646 us/op	1.22
BeaconState.hashTreeRoot - 32 balances	562.08 us/op	465.15 us/op	1.21
BeaconState.hashTreeRoot - 512 balances	5.9281 ms/op	4.4960 ms/op	1.32
BeaconState.hashTreeRoot - 250000 balances	106.40 ms/op	83.770 ms/op	1.27
aggregationBits - 2048 els - zipIndexesInBitList	46.953 us/op	32.444 us/op	1.45
regular array get 100000 times	61.847 us/op	67.393 us/op	0.92
wrappedArray get 100000 times	61.865 us/op	67.423 us/op	0.92
arrayWithProxy get 100000 times	30.477 ms/op	28.896 ms/op	1.05
ssz.Root.equals	610.00 ns/op	482.00 ns/op	1.27
byteArrayEquals	583.00 ns/op	483.00 ns/op	1.21
shuffle list - 16384 els	11.243 ms/op	11.177 ms/op	1.01
shuffle list - 250000 els	172.28 ms/op	168.36 ms/op	1.02
processSlot - 1 slots	14.242 us/op	11.690 us/op	1.22
processSlot - 32 slots	2.0855 ms/op	1.7476 ms/op	1.19
getEffectiveBalanceIncrementsZeroInactive - 250000 vs - 7PWei	446.39 us/op	341.50 us/op	1.31
getCommitteeAssignments - req 1 vs - 250000 vc	5.5506 ms/op	5.2757 ms/op	1.05
getCommitteeAssignments - req 100 vs - 250000 vc	8.0813 ms/op	7.3248 ms/op	1.10
getCommitteeAssignments - req 1000 vs - 250000 vc	8.7032 ms/op	7.7733 ms/op	1.12
computeProposers - vc 250000	21.170 ms/op	16.998 ms/op	1.25
computeEpochShuffling - vc 250000	176.60 ms/op	170.16 ms/op	1.04
getNextSyncCommittee - vc 250000	321.69 ms/op	280.50 ms/op	1.15

by benchmarkbot/action