lotus/build/params.go
2019-11-09 01:18:15 +01:00

126 lines
2.2 KiB
Go

package build
import (
"math/big"
)
// Core network constants
// /////
// Storage
const UnixfsChunkSize uint64 = 1 << 20
const UnixfsLinksPerLevel = 1024
var SectorSizes = []uint64{
16 << 20,
256 << 20,
1 << 30,
}
func SupportedSectorSize(ssize uint64) bool {
for _, ss := range SectorSizes {
if ssize == ss {
return true
}
}
return false
}
// /////
// Payments
// Blocks
const PaymentChannelClosingDelay = 6 * 60 * 2 // six hours
// /////
// Consensus / Network
// Seconds
const BlockDelay = 10
// Seconds
const AllowableClockDrift = BlockDelay * 2
// Blocks
const ForkLengthThreshold = 100
// Blocks (e)
const BlocksPerEpoch = 5
// Blocks
const Finality = 500
// constants for Weight calculation
// The ratio of weight contributed by short-term vs long-term factors in a given round
const WRatioNum = int64(1)
const WRatioDen = 2
// /////
// Proofs
// Blocks
const ProvingPeriodDuration = 160
// PoStChallangeTime sets the window in which post computation should happen
// Blocks
const PoStChallangeTime = ProvingPeriodDuration - 6
// PoStRandomnessLookback is additional randomness lookback for PoSt computation
// To compute randomness epoch in a given proving period:
// RandH = PPE - PoStChallangeTime - PoStRandomnessLookback
//
// Blocks
const PoStRandomnessLookback = 1
// Blocks
const SealRandomnessLookback = Finality
// Blocks
const SealRandomnessLookbackLimit = SealRandomnessLookback + 2000
// /////
// Mining
// Blocks
const EcRandomnessLookback = 300
const PowerCollateralProportion = 5
const PerCapitaCollateralProportion = 1
const CollateralPrecision = 1000
// Blocks
const InteractivePoRepDelay = 10
// /////
// Devnet settings
const TotalFilecoin = 2_000_000_000
const MiningRewardTotal = 1_400_000_000
const InitialRewardStr = "153856861913558700202"
var InitialReward *big.Int
const FilecoinPrecision = 1_000_000_000_000_000_000
// six years
// Blocks
const HalvingPeriodBlocks = 6 * 365 * 24 * 60 * 2
// TODO: Move other important consts here
func init() {
InitialReward = new(big.Int)
var ok bool
InitialReward, ok = InitialReward.
SetString(InitialRewardStr, 10)
if !ok {
panic("could not parse InitialRewardStr")
}
}
// Sync
const BadBlockCacheSize = 8192