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nimbus-eth2/beacon_chain/networking/topic_params.nim

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reduce LC optsync latency (#4002) The optimistic sync spec was updated since the LC based optsync module was introduced. It is no longer necessary to wait for the justified checkpoint to have execution enabled; instead, any block is okay to be optimistically imported to the EL client, as long as its parent block has execution enabled. Complex syncing logic has been removed, and the LC optsync module will now follow gossip directly, reducing the latency when using this module. Note that because this is now based on gossip instead of using sync manager / request manager, that individual blocks may be missed. However, EL clients should recover from this by fetching missing blocks themselves.
2022-08-25 03:53:59 +00:00
# beacon_chain
verify `genesis_time` more strictly (fixes #1667) (#5694) Bogus values lead to crashes down the line when timers overflow
2024-01-06 14:26:56 +00:00
# Copyright (c) 2022-2024 Status Research & Development GmbH
reduce LC optsync latency (#4002) The optimistic sync spec was updated since the LC based optsync module was introduced. It is no longer necessary to wait for the justified checkpoint to have execution enabled; instead, any block is okay to be optimistically imported to the EL client, as long as its parent block has execution enabled. Complex syncing logic has been removed, and the LC optsync module will now follow gossip directly, reducing the latency when using this module. Note that because this is now based on gossip instead of using sync manager / request manager, that individual blocks may be missed. However, EL clients should recover from this by fetching missing blocks themselves.
2022-08-25 03:53:59 +00:00
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
remove Nim 1.2-compatible `push raise`s and update copyright notice years (#4528)
2023-01-20 14:14:37 +00:00
{.push raises: [].}
reduce LC optsync latency (#4002) The optimistic sync spec was updated since the LC based optsync module was introduced. It is no longer necessary to wait for the justified checkpoint to have execution enabled; instead, any block is okay to be optimistically imported to the EL client, as long as its parent block has execution enabled. Complex syncing logic has been removed, and the LC optsync module will now follow gossip directly, reducing the latency when using this module. Note that because this is now based on gossip instead of using sync manager / request manager, that individual blocks may be missed. However, EL clients should recover from this by fetching missing blocks themselves.
2022-08-25 03:53:59 +00:00
import chronos
from
libp2p/protocols/pubsub/gossipsub
import
TopicParams, validateParameters, init
# inspired by lighthouse research here
# https://gist.github.com/blacktemplar/5c1862cb3f0e32a1a7fb0b25e79e6e2c#file-generate-scoring-params-py
const
blocksTopicParams* = TopicParams(
topicWeight: 0.5,
timeInMeshWeight: 0.03333333333333333,
timeInMeshQuantum: chronos.seconds(12),
timeInMeshCap: 300,
firstMessageDeliveriesWeight: 1.1471603557060206,
firstMessageDeliveriesDecay: 0.9928302477768374,
firstMessageDeliveriesCap: 34.86870846001471,
meshMessageDeliveriesWeight: -458.31054878249114,
meshMessageDeliveriesDecay: 0.9716279515771061,
meshMessageDeliveriesThreshold: 0.6849191409056553,
meshMessageDeliveriesCap: 2.054757422716966,
meshMessageDeliveriesActivation: chronos.seconds(384),
meshMessageDeliveriesWindow: chronos.seconds(2),
meshFailurePenaltyWeight: -458.31054878249114 ,
meshFailurePenaltyDecay: 0.9716279515771061,
invalidMessageDeliveriesWeight: -214.99999999999994,
invalidMessageDeliveriesDecay: 0.9971259067705325
)
aggregateTopicParams* = TopicParams(
topicWeight: 0.5,
timeInMeshWeight: 0.03333333333333333,
timeInMeshQuantum: chronos.seconds(12),
timeInMeshCap: 300,
firstMessageDeliveriesWeight: 0.10764904539552399,
firstMessageDeliveriesDecay: 0.8659643233600653,
firstMessageDeliveriesCap: 371.5778421725158,
meshMessageDeliveriesWeight: -0.07538533073670682,
meshMessageDeliveriesDecay: 0.930572040929699,
meshMessageDeliveriesThreshold: 53.404248450179836,
meshMessageDeliveriesCap: 213.61699380071934,
meshMessageDeliveriesActivation: chronos.seconds(384),
meshMessageDeliveriesWindow: chronos.seconds(2),
meshFailurePenaltyWeight: -0.07538533073670682 ,
meshFailurePenaltyDecay: 0.930572040929699,
invalidMessageDeliveriesWeight: -214.99999999999994,
invalidMessageDeliveriesDecay: 0.9971259067705325
)
basicParams* = TopicParams.init()
static:
# compile time validation
blocksTopicParams.validateParameters().tryGet()
aggregateTopicParams.validateParameters().tryGet()
basicParams.validateParameters.tryGet()