feat: gas optimization

[zsystm]

While fuzzing tests liquidstaking module, it often exceeded 20,000,000.

Need to optimize gas consumption.

[zsystm]

Analyze gas consumptions by running simulation testing

• I skipped gas consumption below 10K
• branch: https://github.com/b-harvest/Canto/tree/zsystm/lsm-gas-optimization

Gas-guzzling parts

GetNetAmountStateEssentials (not msg, but heavy gas consumer)	paired chunks	unbonding chunks	rest chunks	consumed
265	65	0	7128932
229	101	0	6615871

• unit paired chunk consumption: 27K
• unit unbonding chunk consumption: 2K

LiquidStake	method(or logic)	consumed	notes
GetNetAmountStateEssentials	8293	pairedchunks=0, unbondingchunks=0, restchunks=0
GetPairingInsurances	669548	pairinginsurances=76
Escrow canto and mint lscanto	132411

LiquidUnstake	method(or logic)	consumed	notes
IterateAllChunks	591277	pairedchunks=100, unbondingchunks=82, restchunks=0
GetNetAmountStateEssentials	2971939	pairedchunks=100, unbondingchunks=82, restchunks=0
Queue liquid unstake including escrow lscanto	18662

ClaimDiscountedReward	method(or logic)	consumed	notes
GetNetAmountStateEssentials	2507286	pairedchunks=84, unbondingchunks=82, restchunks=0
Rest of logics	37176

Normal parts (< 40K)

msg	consumed
ProvideInsurance	37780
WithdrawInsurance	3732
WithdrawInsuranceCommission	22383
DepositInsurance	14926
CancelProvideInsurance	16500

[zsystm]

Dependent on Utilization Ratio

LiquidStake (Total Gas Usage at SoftCap: 3,677,506 | at HardCap: 9,584,748)

• GetPairingInsurances:
  • 99,043 (iterate 215 insurances, 2 pairing insurances)
  • 577,585 (iterate 824 insurances, 110 pairing insurances)
• GetNetAmountStateEssentials
  • 3,448,895 (SoftCap, u: 0.050359255514767015)
  • 8,877,595 (HardCap, u: 0.099419919986008629)
• Get tokens and mint ls tokens: 129,568 (if liquid stake n chunks, then should multiply n)

LiquidUnstake (Total Gas Usage at SoftCap: 4,300,690 | at HardCap: 10,971,065)

• IterateAllChunks:
  • 729,389 (SoftCap, u: 0.051311339313346141)
  • 2,036,620 (HardCap, u: 0.099896375855056327)
• GetNetAmountStateEssentials
  • 3,552,699 (SoftCap, u: 0.051311339313346141)
  • 8,915,843 (HardCap, u: 0.099896375855056327)
• Escrow tokens and queue: 18,602

ClaimDiscountedReward (Total Gas Usage at SoftCap: 3,486,035 | at HardCap: 8,830,348)

• GetNetAmountStateEssentials
  • 3,448,895 (SoftCap, u: 0.050380883554559393)
  • 8,793,208 (HardCap, u: 0.098482544159051878)
• Burn ls tokens and send rewards: 37,140

Not Dependent on Utilization Ratio

Msg	Total Gas Usage
ProvideInsurance	37,624
WithdrawInsurance	3,768
WithdrawInsuranceCommission	22,431
DepositInsurance	14,899
CancelProvideInsurance	34,497

GetNetAmountStateEssentials

This function is most gas-guzzling function in lsm. It iterates all chunks to create NetAmountStateEssentials.

For each paired chunks, it consumes about 22,850

• GetDelegation: 2,963
• IncrementValidatorPeriod: 16,044
• CalculateDelegationRewardsIncrementValidatorPeriod: 3,843

For each unbonding chunks, it consumes about 2,047

• IterateDelegatorUnbondingDelegations: 2047

[zsystm]

@dongsam I analyzed gas consumption for all msgs in lsm at above comment.

As we can said earlier, I'll try optimize gas consumption for

LiquidUnstake

• instead of IterateAllChunks, get unstakable chunks when calc NetAmountStateEssentials

[zsystm]

@dongsam Optimization - LiquidUnstake

• CalcNetAmountStateEssentials return an additional map and slices.
• So we can skip iterate chunks when queue liquid unstake that reduces gas usage.

commit: https://github.com/b-harvest/Canto/commit/28a62769d64c00f236239d1d1ae5bb147481fe00

Effects: gas consumption reduced

• 10,971,065(u: 0.099896375855056327) --> 7,617,535 (u: 0.100624023240769217)

[dongsam]

@zsystm good,

1. After applying the gas refund logic for the cachedCtx logic on GetNetAmountStateEssentials also, let's find the final gas consumption one more time as did in this comment
2. After that, please remove the debug logic and create it as PR for code review

[zsystm]

@dongsam Optimization - GetNetAmountStateEssentials

• Refund gas used by cachedCtx

Effects: a huge decrease of gas consumption

• Liquid Unstake
  • before: 7,617,535 (u: 0.100624023240769217)
  • after: 2,628,223 (u: 0.100462988764324908)
• Liquid Stake:
  • before: 9,584,748 (u: 0.099419919986008629)
  • after: 2,964,523 (u: 0.099681660514577146)
• ClaimDiscountedReward:
  • before: 8,793,208 (u: 0.098482544159051878)
  • after: 2,246,126 (u: 0.098412449172946314)

commit: https://github.com/b-harvest/Canto/commit/6ec0f107a752a83d4183256d2bb74807c191324c