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Speedup core loop of epoch #7174

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Dec 21, 2023
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25 changes: 20 additions & 5 deletions x/incentives/keeper/distribute.go
Original file line number Diff line number Diff line change
Expand Up @@ -654,22 +654,28 @@ func (k Keeper) distributeInternal(
}
// total_denom_lock_amount * remain_epochs
lockSumTimesRemainingEpochs := lockSum.MulRaw(int64(remainEpochs))
lockSumTimesRemainingEpochsBi := lockSumTimesRemainingEpochs.BigIntMut()
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nit: consider expanding Bi to BigInt for readability


for _, lock := range locks {
distrCoins := sdk.Coins{}
// too expensive + verbose even in debug mode.
// ctx.Logger().Debug("distributeInternal, distribute to lock", "module", types.ModuleName, "gaugeId", gauge.Id, "lockId", lock.ID, "remainCons", remainCoins, "height", ctx.BlockHeight())

denomLockAmt := guaranteedNonzeroCoinAmountOf(lock.Coins, denom)
for _, coin := range remainCoins {
// distribution amount = gauge_size * denom_lock_amount / (total_denom_lock_amount * remain_epochs)
denomLockAmt := lock.Coins.AmountOfNoDenomValidation(denom)
amt := coin.Amount.Mul(denomLockAmt).Quo(lockSumTimesRemainingEpochs)
if amt.IsPositive() {
newlyDistributedCoin := sdk.Coin{Denom: coin.Denom, Amount: amt}
amt := coin.Amount.Mul(denomLockAmt).BigIntMut()
amt = amt.Quo(amt, lockSumTimesRemainingEpochsBi)
coinAmt := osmomath.NewIntFromBigInt(amt)
if coinAmt.IsPositive() {
newlyDistributedCoin := sdk.Coin{Denom: coin.Denom, Amount: coinAmt}
distrCoins = distrCoins.Add(newlyDistributedCoin)
}
}
distrCoins = distrCoins.Sort()
if distrCoins.Len() > 1 {
// Sort makes a runtime copy, due to some interesting golang details.
distrCoins = distrCoins.Sort()
}
if distrCoins.Empty() {
continue
}
Expand All @@ -693,6 +699,15 @@ func (k Keeper) distributeInternal(
return totalDistrCoins, err
}

// faster coins.AmountOf if we know that coins must contain the denom.
// returns a new big int that can be mutated.
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func guaranteedNonzeroCoinAmountOf(coins sdk.Coins, denom string) osmomath.Int {
if coins.Len() == 1 {
return coins[0].Amount
}
return coins.AmountOfNoDenomValidation(denom)
}

// updateGaugePostDistribute increments the gauge's filled epochs field.
// Also adds the coins that were just distributed to the gauge's distributed coins field.
func (k Keeper) updateGaugePostDistribute(ctx sdk.Context, gauge types.Gauge, newlyDistributedCoins sdk.Coins) error {
Expand Down