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Add TOO_MANY_SKIPPED_SLOTS attestation error #5390

Merged
merged 1 commit into from
Apr 20, 2023
Merged

Add TOO_MANY_SKIPPED_SLOTS attestation error #5390

merged 1 commit into from
Apr 20, 2023

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twoeths
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@twoeths twoeths commented Apr 20, 2023 •
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Motivation

  • Regen module is overloaded, see High regen queue job wait time #5384
  • We want to have DOS protection to avoid having to process attestations with very old head block that can potentially cause our regen to be overloaded

Description

  • Follow Lighthouse to add TOO_MANY_SKIPPED_SLOTS error
  • By default, configure maxSkipSlots of chain to be 32:
    • for gossip block validation, it's unlikely we see a reorg with 32 slots
    • for attestation validation, having this value ensures we don't have to regen states most of the time (because attestation has to be in the last 32 slots + maxSkipSlots of 32 above => headBlock of attestation should be in the last 64 slots and it's likely we can get its state from the cache). Also most of Attestations (>90%) are caught by the SeenAttestationDatas cache, it's no problem not to import these weird attestations.
  • Import block: add postState to state cache before we emit "block" event since some handlers need that
  • Add metrics to track this new error

part of #5384

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Performance Report

✔️ no performance regression detected

Full benchmark results
Benchmark suite Current: 962b0a8 Previous: 35fe214 Ratio
getPubkeys - index2pubkey - req 1000 vs - 250000 vc 859.81 us/op 895.18 us/op 0.96
getPubkeys - validatorsArr - req 1000 vs - 250000 vc 45.450 us/op 78.171 us/op 0.58
BLS verify - blst-native 1.2048 ms/op 1.8978 ms/op 0.63
BLS verifyMultipleSignatures 3 - blst-native 2.4555 ms/op 3.4992 ms/op 0.70
BLS verifyMultipleSignatures 8 - blst-native 5.2677 ms/op 6.3512 ms/op 0.83
BLS verifyMultipleSignatures 32 - blst-native 19.037 ms/op 23.447 ms/op 0.81
BLS aggregatePubkeys 32 - blst-native 25.458 us/op 31.114 us/op 0.82
BLS aggregatePubkeys 128 - blst-native 99.501 us/op 124.86 us/op 0.80
getAttestationsForBlock 51.581 ms/op 104.20 ms/op 0.49
isKnown best case - 1 super set check 251.00 ns/op 356.00 ns/op 0.71
isKnown normal case - 2 super set checks 250.00 ns/op 296.00 ns/op 0.84
isKnown worse case - 16 super set checks 244.00 ns/op 319.00 ns/op 0.76
CheckpointStateCache - add get delete 4.9030 us/op 7.3770 us/op 0.66
validate gossip signedAggregateAndProof - struct 2.7220 ms/op 3.1878 ms/op 0.85
validate gossip attestation - struct 1.2965 ms/op 1.7663 ms/op 0.73
pickEth1Vote - no votes 1.2085 ms/op 1.5865 ms/op 0.76
pickEth1Vote - max votes 9.2327 ms/op 16.371 ms/op 0.56
pickEth1Vote - Eth1Data hashTreeRoot value x2048 8.4782 ms/op 13.183 ms/op 0.64
pickEth1Vote - Eth1Data hashTreeRoot tree x2048 12.955 ms/op 21.800 ms/op 0.59
pickEth1Vote - Eth1Data fastSerialize value x2048 634.86 us/op 931.01 us/op 0.68
pickEth1Vote - Eth1Data fastSerialize tree x2048 7.9941 ms/op 7.5940 ms/op 1.05
bytes32 toHexString 459.00 ns/op 1.0680 us/op 0.43
bytes32 Buffer.toString(hex) 327.00 ns/op 527.00 ns/op 0.62
bytes32 Buffer.toString(hex) from Uint8Array 520.00 ns/op 733.00 ns/op 0.71
bytes32 Buffer.toString(hex) + 0x 381.00 ns/op 495.00 ns/op 0.77
Object access 1 prop 0.15700 ns/op 0.24400 ns/op 0.64
Map access 1 prop 0.15300 ns/op 0.19300 ns/op 0.79
Object get x1000 6.1300 ns/op 7.5130 ns/op 0.82
Map get x1000 0.49800 ns/op 0.85600 ns/op 0.58
Object set x1000 49.293 ns/op 89.315 ns/op 0.55
Map set x1000 40.945 ns/op 66.314 ns/op 0.62
Return object 10000 times 0.22330 ns/op 0.30200 ns/op 0.74
Throw Error 10000 times 3.9679 us/op 6.4323 us/op 0.62
fastMsgIdFn sha256 / 200 bytes 3.2800 us/op 4.8430 us/op 0.68
fastMsgIdFn h32 xxhash / 200 bytes 263.00 ns/op 482.00 ns/op 0.55
fastMsgIdFn h64 xxhash / 200 bytes 374.00 ns/op 618.00 ns/op 0.61
fastMsgIdFn sha256 / 1000 bytes 10.991 us/op 14.537 us/op 0.76
fastMsgIdFn h32 xxhash / 1000 bytes 386.00 ns/op 612.00 ns/op 0.63
fastMsgIdFn h64 xxhash / 1000 bytes 442.00 ns/op 860.00 ns/op 0.51
fastMsgIdFn sha256 / 10000 bytes 98.659 us/op 133.59 us/op 0.74
fastMsgIdFn h32 xxhash / 10000 bytes 1.8060 us/op 2.2760 us/op 0.79
fastMsgIdFn h64 xxhash / 10000 bytes 1.2770 us/op 1.7070 us/op 0.75
enrSubnets - fastDeserialize 64 bits 1.2200 us/op 2.0920 us/op 0.58
enrSubnets - ssz BitVector 64 bits 485.00 ns/op 709.00 ns/op 0.68
enrSubnets - fastDeserialize 4 bits 159.00 ns/op 252.00 ns/op 0.63
enrSubnets - ssz BitVector 4 bits 480.00 ns/op 734.00 ns/op 0.65
prioritizePeers score -10:0 att 32-0.1 sync 2-0 100.41 us/op 142.83 us/op 0.70
prioritizePeers score 0:0 att 32-0.25 sync 2-0.25 129.06 us/op 196.96 us/op 0.66
prioritizePeers score 0:0 att 32-0.5 sync 2-0.5 169.09 us/op 230.01 us/op 0.74
prioritizePeers score 0:0 att 64-0.75 sync 4-0.75 315.06 us/op 507.91 us/op 0.62
prioritizePeers score 0:0 att 64-1 sync 4-1 349.41 us/op 525.52 us/op 0.66
array of 16000 items push then shift 1.5664 us/op 2.1819 us/op 0.72
LinkedList of 16000 items push then shift 8.4070 ns/op 11.267 ns/op 0.75
array of 16000 items push then pop 80.456 ns/op 143.29 ns/op 0.56
LinkedList of 16000 items push then pop 8.1400 ns/op 12.286 ns/op 0.66
array of 24000 items push then shift 2.3558 us/op 3.5229 us/op 0.67
LinkedList of 24000 items push then shift 8.9820 ns/op 15.293 ns/op 0.59
array of 24000 items push then pop 80.534 ns/op 135.91 ns/op 0.59
LinkedList of 24000 items push then pop 8.7110 ns/op 13.051 ns/op 0.67
intersect bitArray bitLen 8 13.326 ns/op 22.157 ns/op 0.60
intersect array and set length 8 86.544 ns/op 138.57 ns/op 0.62
intersect bitArray bitLen 128 44.322 ns/op 68.213 ns/op 0.65
intersect array and set length 128 1.1640 us/op 1.8323 us/op 0.64
Buffer.concat 32 items 2.9540 us/op 4.3000 us/op 0.69
Uint8Array.set 32 items 2.1980 us/op 4.1020 us/op 0.54
pass gossip attestations to forkchoice per slot 2.7200 ms/op 4.5814 ms/op 0.59
computeDeltas 2.8027 ms/op 3.9152 ms/op 0.72
computeProposerBoostScoreFromBalances 1.7330 ms/op 2.1735 ms/op 0.80
altair processAttestation - 250000 vs - 7PWei normalcase 2.1718 ms/op 4.3472 ms/op 0.50
altair processAttestation - 250000 vs - 7PWei worstcase 3.2265 ms/op 5.7078 ms/op 0.57
altair processAttestation - setStatus - 1/6 committees join 132.18 us/op 208.69 us/op 0.63
altair processAttestation - setStatus - 1/3 committees join 268.24 us/op 367.37 us/op 0.73
altair processAttestation - setStatus - 1/2 committees join 351.36 us/op 614.54 us/op 0.57
altair processAttestation - setStatus - 2/3 committees join 454.85 us/op 681.62 us/op 0.67
altair processAttestation - setStatus - 4/5 committees join 634.14 us/op 884.28 us/op 0.72
altair processAttestation - setStatus - 100% committees join 745.78 us/op 954.54 us/op 0.78
altair processBlock - 250000 vs - 7PWei normalcase 16.321 ms/op 26.958 ms/op 0.61
altair processBlock - 250000 vs - 7PWei normalcase hashState 27.358 ms/op 39.614 ms/op 0.69
altair processBlock - 250000 vs - 7PWei worstcase 46.737 ms/op 74.809 ms/op 0.62
altair processBlock - 250000 vs - 7PWei worstcase hashState 70.310 ms/op 99.292 ms/op 0.71
phase0 processBlock - 250000 vs - 7PWei normalcase 1.9689 ms/op 3.4705 ms/op 0.57
phase0 processBlock - 250000 vs - 7PWei worstcase 26.972 ms/op 40.463 ms/op 0.67
altair processEth1Data - 250000 vs - 7PWei normalcase 459.02 us/op 885.37 us/op 0.52
vc - 250000 eb 1 eth1 1 we 0 wn 0 - smpl 15 6.5960 us/op 14.874 us/op 0.44
vc - 250000 eb 0.95 eth1 0.1 we 0.05 wn 0 - smpl 219 19.154 us/op 41.383 us/op 0.46
vc - 250000 eb 0.95 eth1 0.3 we 0.05 wn 0 - smpl 42 8.5620 us/op 21.332 us/op 0.40
vc - 250000 eb 0.95 eth1 0.7 we 0.05 wn 0 - smpl 18 6.2580 us/op 16.640 us/op 0.38
vc - 250000 eb 0.1 eth1 0.1 we 0 wn 0 - smpl 1020 75.725 us/op 123.24 us/op 0.61
vc - 250000 eb 0.03 eth1 0.03 we 0 wn 0 - smpl 11777 616.64 us/op 939.69 us/op 0.66
vc - 250000 eb 0.01 eth1 0.01 we 0 wn 0 - smpl 16384 891.57 us/op 1.0015 ms/op 0.89
vc - 250000 eb 0 eth1 0 we 0 wn 0 - smpl 16384 877.46 us/op 1.4407 ms/op 0.61
vc - 250000 eb 0 eth1 0 we 0 wn 0 nocache - smpl 16384 2.2505 ms/op 4.5426 ms/op 0.50
vc - 250000 eb 0 eth1 1 we 0 wn 0 - smpl 16384 1.4252 ms/op 2.5841 ms/op 0.55
vc - 250000 eb 0 eth1 1 we 0 wn 0 nocache - smpl 16384 3.7731 ms/op 7.1813 ms/op 0.53
Tree 40 250000 create 308.00 ms/op 824.19 ms/op 0.37
Tree 40 250000 get(125000) 176.60 ns/op 233.07 ns/op 0.76
Tree 40 250000 set(125000) 921.74 ns/op 2.7860 us/op 0.33
Tree 40 250000 toArray() 17.761 ms/op 29.665 ms/op 0.60
Tree 40 250000 iterate all - toArray() + loop 16.184 ms/op 30.121 ms/op 0.54
Tree 40 250000 iterate all - get(i) 63.353 ms/op 93.518 ms/op 0.68
MutableVector 250000 create 9.8106 ms/op 14.440 ms/op 0.68
MutableVector 250000 get(125000) 6.1120 ns/op 7.4300 ns/op 0.82
MutableVector 250000 set(125000) 249.07 ns/op 730.10 ns/op 0.34
MutableVector 250000 toArray() 2.6506 ms/op 5.5196 ms/op 0.48
MutableVector 250000 iterate all - toArray() + loop 2.7688 ms/op 6.0607 ms/op 0.46
MutableVector 250000 iterate all - get(i) 1.4620 ms/op 2.1970 ms/op 0.67
Array 250000 create 2.5232 ms/op 5.9505 ms/op 0.42
Array 250000 clone - spread 1.1296 ms/op 2.9590 ms/op 0.38
Array 250000 get(125000) 0.52800 ns/op 1.4880 ns/op 0.35
Array 250000 set(125000) 0.60800 ns/op 1.3950 ns/op 0.44
Array 250000 iterate all - loop 105.33 us/op 125.06 us/op 0.84
effectiveBalanceIncrements clone Uint8Array 300000 24.603 us/op 78.129 us/op 0.31
effectiveBalanceIncrements clone MutableVector 300000 349.00 ns/op 721.00 ns/op 0.48
effectiveBalanceIncrements rw all Uint8Array 300000 159.84 us/op 201.41 us/op 0.79
effectiveBalanceIncrements rw all MutableVector 300000 80.139 ms/op 188.95 ms/op 0.42
phase0 afterProcessEpoch - 250000 vs - 7PWei 108.61 ms/op 178.68 ms/op 0.61
phase0 beforeProcessEpoch - 250000 vs - 7PWei 33.907 ms/op 61.339 ms/op 0.55
altair processEpoch - mainnet_e81889 316.64 ms/op 462.78 ms/op 0.68
mainnet_e81889 - altair beforeProcessEpoch 63.341 ms/op 100.77 ms/op 0.63
mainnet_e81889 - altair processJustificationAndFinalization 17.843 us/op 41.399 us/op 0.43
mainnet_e81889 - altair processInactivityUpdates 5.5458 ms/op 9.5439 ms/op 0.58
mainnet_e81889 - altair processRewardsAndPenalties 64.122 ms/op 75.740 ms/op 0.85
mainnet_e81889 - altair processRegistryUpdates 3.3630 us/op 8.6870 us/op 0.39
mainnet_e81889 - altair processSlashings 509.00 ns/op 1.6110 us/op 0.32
mainnet_e81889 - altair processEth1DataReset 574.00 ns/op 1.9780 us/op 0.29
mainnet_e81889 - altair processEffectiveBalanceUpdates 1.3395 ms/op 1.8819 ms/op 0.71
mainnet_e81889 - altair processSlashingsReset 5.1990 us/op 14.029 us/op 0.37
mainnet_e81889 - altair processRandaoMixesReset 5.5050 us/op 12.776 us/op 0.43
mainnet_e81889 - altair processHistoricalRootsUpdate 1.1460 us/op 2.4420 us/op 0.47
mainnet_e81889 - altair processParticipationFlagUpdates 3.0110 us/op 9.4340 us/op 0.32
mainnet_e81889 - altair processSyncCommitteeUpdates 805.00 ns/op 2.1490 us/op 0.37
mainnet_e81889 - altair afterProcessEpoch 137.33 ms/op 184.83 ms/op 0.74
phase0 processEpoch - mainnet_e58758 357.43 ms/op 569.50 ms/op 0.63
mainnet_e58758 - phase0 beforeProcessEpoch 151.12 ms/op 254.50 ms/op 0.59
mainnet_e58758 - phase0 processJustificationAndFinalization 19.595 us/op 40.239 us/op 0.49
mainnet_e58758 - phase0 processRewardsAndPenalties 65.097 ms/op 64.063 ms/op 1.02
mainnet_e58758 - phase0 processRegistryUpdates 7.8430 us/op 22.687 us/op 0.35
mainnet_e58758 - phase0 processSlashings 493.00 ns/op 1.8950 us/op 0.26
mainnet_e58758 - phase0 processEth1DataReset 494.00 ns/op 1.8020 us/op 0.27
mainnet_e58758 - phase0 processEffectiveBalanceUpdates 1.3384 ms/op 1.9964 ms/op 0.67
mainnet_e58758 - phase0 processSlashingsReset 4.8980 us/op 9.8590 us/op 0.50
mainnet_e58758 - phase0 processRandaoMixesReset 4.5050 us/op 15.657 us/op 0.29
mainnet_e58758 - phase0 processHistoricalRootsUpdate 601.00 ns/op 2.3240 us/op 0.26
mainnet_e58758 - phase0 processParticipationRecordUpdates 3.7580 us/op 12.583 us/op 0.30
mainnet_e58758 - phase0 afterProcessEpoch 99.648 ms/op 124.76 ms/op 0.80
phase0 processEffectiveBalanceUpdates - 250000 normalcase 1.2430 ms/op 2.3862 ms/op 0.52
phase0 processEffectiveBalanceUpdates - 250000 worstcase 0.5 1.4738 ms/op 2.6006 ms/op 0.57
altair processInactivityUpdates - 250000 normalcase 23.731 ms/op 37.153 ms/op 0.64
altair processInactivityUpdates - 250000 worstcase 27.441 ms/op 29.482 ms/op 0.93
phase0 processRegistryUpdates - 250000 normalcase 8.4370 us/op 17.953 us/op 0.47
phase0 processRegistryUpdates - 250000 badcase_full_deposits 284.35 us/op 307.45 us/op 0.92
phase0 processRegistryUpdates - 250000 worstcase 0.5 137.18 ms/op 129.77 ms/op 1.06
altair processRewardsAndPenalties - 250000 normalcase 71.191 ms/op 57.883 ms/op 1.23
altair processRewardsAndPenalties - 250000 worstcase 72.142 ms/op 55.191 ms/op 1.31
phase0 getAttestationDeltas - 250000 normalcase 6.7469 ms/op 7.0069 ms/op 0.96
phase0 getAttestationDeltas - 250000 worstcase 6.4363 ms/op 7.0916 ms/op 0.91
phase0 processSlashings - 250000 worstcase 3.5965 ms/op 3.5441 ms/op 1.01
altair processSyncCommitteeUpdates - 250000 171.48 ms/op 187.78 ms/op 0.91
BeaconState.hashTreeRoot - No change 268.00 ns/op 273.00 ns/op 0.98
BeaconState.hashTreeRoot - 1 full validator 61.042 us/op 54.180 us/op 1.13
BeaconState.hashTreeRoot - 32 full validator 503.10 us/op 533.26 us/op 0.94
BeaconState.hashTreeRoot - 512 full validator 4.9795 ms/op 6.0275 ms/op 0.83
BeaconState.hashTreeRoot - 1 validator.effectiveBalance 62.196 us/op 67.514 us/op 0.92
BeaconState.hashTreeRoot - 32 validator.effectiveBalance 873.23 us/op 925.59 us/op 0.94
BeaconState.hashTreeRoot - 512 validator.effectiveBalance 11.093 ms/op 12.151 ms/op 0.91
BeaconState.hashTreeRoot - 1 balances 48.643 us/op 48.314 us/op 1.01
BeaconState.hashTreeRoot - 32 balances 441.11 us/op 467.12 us/op 0.94
BeaconState.hashTreeRoot - 512 balances 4.2786 ms/op 4.7142 ms/op 0.91
BeaconState.hashTreeRoot - 250000 balances 77.910 ms/op 69.519 ms/op 1.12
aggregationBits - 2048 els - zipIndexesInBitList 16.750 us/op 19.489 us/op 0.86
regular array get 100000 times 32.719 us/op 33.960 us/op 0.96
wrappedArray get 100000 times 32.660 us/op 34.400 us/op 0.95
arrayWithProxy get 100000 times 15.820 ms/op 16.826 ms/op 0.94
ssz.Root.equals 549.00 ns/op 578.00 ns/op 0.95
byteArrayEquals 536.00 ns/op 574.00 ns/op 0.93
shuffle list - 16384 els 6.8371 ms/op 7.2520 ms/op 0.94
shuffle list - 250000 els 99.559 ms/op 107.07 ms/op 0.93
processSlot - 1 slots 9.2250 us/op 9.1680 us/op 1.01
processSlot - 32 slots 1.3330 ms/op 1.4139 ms/op 0.94
getEffectiveBalanceIncrementsZeroInactive - 250000 vs - 7PWei 37.588 ms/op 33.799 ms/op 1.11
getCommitteeAssignments - req 1 vs - 250000 vc 2.8798 ms/op 2.9347 ms/op 0.98
getCommitteeAssignments - req 100 vs - 250000 vc 4.1243 ms/op 4.1443 ms/op 1.00
getCommitteeAssignments - req 1000 vs - 250000 vc 4.4358 ms/op 4.5331 ms/op 0.98
RootCache.getBlockRootAtSlot - 250000 vs - 7PWei 4.7900 ns/op 4.7700 ns/op 1.00
state getBlockRootAtSlot - 250000 vs - 7PWei 754.62 ns/op 780.80 ns/op 0.97
computeProposers - vc 250000 10.922 ms/op 10.648 ms/op 1.03
computeEpochShuffling - vc 250000 103.37 ms/op 102.74 ms/op 1.01
getNextSyncCommittee - vc 250000 176.93 ms/op 175.92 ms/op 1.01
computeSigningRoot for AttestationData 13.005 us/op 13.991 us/op 0.93
hash AttestationData serialized data then Buffer.toString(base64) 2.4607 us/op 2.4579 us/op 1.00
toHexString serialized data 1.0799 us/op 1.1221 us/op 0.96
Buffer.toString(base64) 314.23 ns/op 361.70 ns/op 0.87

by benchmarkbot/action

@twoeths
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twoeths commented Apr 20, 2023

feat1

  • Was able to cache some attestations with very old block head

Screenshot 2023-04-20 at 19 32 14

- While there is no cache miss due to `getState()` entry point

Screenshot 2023-04-20 at 19 34 30

unstable

  • It shows there are always some cache miss due to getState() consistently (from attestation validation) and it'll cause regen

Screenshot 2023-04-20 at 19 35 26

@twoeths twoeths marked this pull request as ready for review April 20, 2023 12:36
@twoeths twoeths requested a review from a team as a code owner April 20, 2023 12:37
g11tech
g11tech approved these changes Apr 20, 2023
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lgtm

nflaig
nflaig approved these changes Apr 20, 2023
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lgtm, great comments, makes it even for me easy to understand 👍

@wemeetagain wemeetagain merged commit 7af22d7 into unstable Apr 20, 2023
@wemeetagain wemeetagain deleted the tuyen/too_many_skipped_slots_error branch April 20, 2023 14:06
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🎉 This PR is included in v1.8.0 🎉

@wemeetagain wemeetagain mentioned this pull request May 16, 2023
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@g11tech g11tech g11tech approved these changes

@nflaig nflaig nflaig approved these changes

@wemeetagain wemeetagain wemeetagain approved these changes

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@twoeths @wemeetagain @nflaig @g11tech