Coreum Deterministic Gas
Intro
Coreum uses a deterministic gas model for its transactions. Meaning that given a transaction type (e.g /coreum.asset.ft.v1.MsgIssueGasPrice) one can know how much gas will be used beforehand, and this amount is fixed if some preconditions are met. Of course this deterministic gas does not apply to the type of transactions that have a complicated, nondeterministic execution path (e.g /cosmwasm.wasm.v1.MsgExecuteContract). We provide tables with all deterministic gas & nondeterministic gas for all our types. For a more recent data, consult this file
Formula
Here is formula for the transaction
Gas = FixedGas + max((GasForBytes + GasForSignatures - TxBaseGas), 0) + Sum(Gas for each message)
If message type is deterministic, then the value is looked up from the table, if it is non-deterministic, then the required gas is determined after the execution.
GasForBytes = TxByteSize * TxSizeCostPerByte
GasForSignatures = NumOfSigs * SigVerifyCost
Currently, we have values for the above variables as follows:
FixedGas: 65000TxBaseGas: 21480SigVerifyCost: 1000TxSizeCostPerByte: 10FreeSignatures: 1FreeBytes: 2048
To summarize user pays FixedGas as long as GasForBytes + GasForSignatures <= TxBaseGas. If GasForBytes + GasForSignatures > TxBaseGas user will have to pay anything above TxBaseGas on top of FixedGas.
As an example if the transaction has 1 signature on it and size is below 2048 bytes, the user will not pay anything extra. Or user can have multiple signatures but fewer bytes then nothing extra should be paid.
Full examples
Example 1
Let's say we have a transaction with 1 messages of type /cosmos.bank.v1beta1.MsgSend containing single coin inside, also there is a single signatures and the tx size is 1000 bytes, total will be:
TotalGas = 65000 + max(0, (21480 - 1 * 1000 + 1000 * 10)) + 1 * 50000
Example 2
Let's say we have a transaction with 2 messages of type /coreum.asset.ft.v1.MsgIssueGasPrice inside, also there are 2 signatures and the tx size is 2050 bytes, total will be:
TotalGas = 65000 + max(0, (21480 - 2 * 1000 + 2050 * 10)) + 2 * 70000
Gas Tables
Deterministic messages
| Message Type | Gas |
|---|---|
| /cosmos.authz.v1beta1.MsgExec | special case |
| /cosmos.bank.v1beta1.MsgMultiSend | special case |
| /cosmos.bank.v1beta1.MsgSend | special case |
| /coreum.asset.ft.v1.MsgBurn | 35000 |
| /coreum.asset.ft.v1.MsgFreeze | 8500 |
| /coreum.asset.ft.v1.MsgGloballyFreeze | 5000 |
| /coreum.asset.ft.v1.MsgGloballyUnfreeze | 5000 |
| /coreum.asset.ft.v1.MsgIssue | 70000 |
| /coreum.asset.ft.v1.MsgMint | 31000 |
| /coreum.asset.ft.v1.MsgSetFrozen | 8500 |
| /coreum.asset.ft.v1.MsgSetWhitelistedLimit | 9000 |
| /coreum.asset.ft.v1.MsgUnfreeze | 8500 |
| /coreum.asset.ft.v1.MsgUpgradeTokenV1 | 25000 |
| /coreum.asset.nft.v1.MsgAddToClassWhitelist | 7000 |
| /coreum.asset.nft.v1.MsgAddToWhitelist | 7000 |
| /coreum.asset.nft.v1.MsgBurn | 26000 |
| /coreum.asset.nft.v1.MsgClassFreeze | 8000 |
| /coreum.asset.nft.v1.MsgClassUnfreeze | 5000 |
| /coreum.asset.nft.v1.MsgFreeze | 8000 |
| /coreum.asset.nft.v1.MsgIssueClass | 16000 |
| /coreum.asset.nft.v1.MsgMint | 39000 |
| /coreum.asset.nft.v1.MsgRemoveFromClassWhitelist | 3500 |
| /coreum.asset.nft.v1.MsgRemoveFromWhitelist | 3500 |
| /coreum.asset.nft.v1.MsgUnfreeze | 5000 |
| /coreum.nft.v1beta1.MsgSend | 25000 |
| /cosmos.authz.v1beta1.MsgGrant | 28000 |
| /cosmos.authz.v1beta1.MsgRevoke | 8000 |
| /cosmos.distribution.v1beta1.MsgFundCommunityPool | 17000 |
| /cosmos.distribution.v1beta1.MsgSetWithdrawAddress | 5000 |
| /cosmos.distribution.v1beta1.MsgWithdrawDelegatorReward | 79000 |
| /cosmos.distribution.v1beta1.MsgWithdrawValidatorCommission | 22000 |
| /cosmos.feegrant.v1beta1.MsgGrantAllowance | 11000 |
| /cosmos.feegrant.v1beta1.MsgRevokeAllowance | 2500 |
| /cosmos.gov.v1.MsgDeposit | 65000 |
| /cosmos.gov.v1.MsgVote | 6000 |
| /cosmos.gov.v1.MsgVoteWeighted | 6500 |
| /cosmos.gov.v1beta1.MsgDeposit | 85000 |
| /cosmos.gov.v1beta1.MsgVote | 6000 |
| /cosmos.gov.v1beta1.MsgVoteWeighted | 9000 |
| /cosmos.group.v1.MsgCreateGroup | 55000 |
| /cosmos.group.v1.MsgCreateGroupPolicy | 40000 |
| /cosmos.group.v1.MsgCreateGroupWithPolicy | 95000 |
| /cosmos.group.v1.MsgLeaveGroup | 17500 |
| /cosmos.group.v1.MsgUpdateGroupAdmin | 13500 |
| /cosmos.group.v1.MsgUpdateGroupMembers | 17500 |
| /cosmos.group.v1.MsgUpdateGroupMetadata | 9500 |
| /cosmos.group.v1.MsgUpdateGroupPolicyAdmin | 20000 |
| /cosmos.group.v1.MsgUpdateGroupPolicyDecisionPolicy | 17000 |
| /cosmos.group.v1.MsgUpdateGroupPolicyMetadata | 15000 |
| /cosmos.group.v1.MsgWithdrawProposal | 22000 |
| /cosmos.nft.v1beta1.MsgSend | 25000 |
| /cosmos.slashing.v1beta1.MsgUnjail | 90000 |
| /cosmos.staking.v1beta1.MsgBeginRedelegate | 157000 |
| /cosmos.staking.v1beta1.MsgCancelUnbondingDelegation | 75000 |
| /cosmos.staking.v1beta1.MsgCreateValidator | 117000 |
| /cosmos.staking.v1beta1.MsgDelegate | 83000 |
| /cosmos.staking.v1beta1.MsgEditValidator | 13000 |
| /cosmos.staking.v1beta1.MsgUndelegate | 112000 |
| /cosmos.vesting.v1beta1.MsgCreatePeriodicVestingAccount | 32000 |
| /cosmos.vesting.v1beta1.MsgCreatePermanentLockedAccount | 30000 |
| /cosmos.vesting.v1beta1.MsgCreateVestingAccount | 30000 |
| /cosmwasm.wasm.v1.MsgClearAdmin | 6500 |
| /cosmwasm.wasm.v1.MsgUpdateAdmin | 8000 |
| /ibc.applications.transfer.v1.MsgTransfer | 54000 |
Special Cases
There are some special cases when custom logic is applied for deterministic gas calculation. Real examples of special case tests could be found here
/cosmos.bank.v1beta1.MsgSend
DeterministicGasForMsg = bankSendPerCoinGas * NumberOfCoins
bankSendPerCoinGas is currently equal to 50000.
/cosmos.bank.v1beta1.MsgMultiSend
DeterministicGasForMsg = bankMultiSendPerOperationGas * (NumberOfInputs + NumberOfOutputs)
bankMultiSendPerOperationGas is currently equal to 35000.
/cosmos.authz.v1beta1.MsgExec
DeterministicGasForMsg = authzMsgExecOverhead + Sum(DeterministicGas(ChildMsg))
authzMsgExecOverhead is currently equal to 1500.
Nondeterministic messages
| Message Type |
|---|
| /cosmos.auth.v1beta1.MsgUpdateParams |
| /cosmos.bank.v1beta1.MsgSetSendEnabled |
| /cosmos.bank.v1beta1.MsgUpdateParams |
| /cosmos.consensus.v1.MsgUpdateParams |
| /cosmos.crisis.v1beta1.MsgUpdateParams |
| /cosmos.crisis.v1beta1.MsgVerifyInvariant |
| /cosmos.distribution.v1beta1.MsgCommunityPoolSpend |
| /cosmos.distribution.v1beta1.MsgUpdateParams |
| /cosmos.evidence.v1beta1.MsgSubmitEvidence |
| /cosmos.gov.v1.MsgExecLegacyContent |
| /cosmos.gov.v1.MsgSubmitProposal |
| /cosmos.gov.v1.MsgUpdateParams |
| /cosmos.gov.v1beta1.MsgSubmitProposal |
| /cosmos.group.v1.MsgExec |
| /cosmos.group.v1.MsgSubmitProposal |
| /cosmos.group.v1.MsgVote |
| /cosmos.mint.v1beta1.MsgUpdateParams |
| /cosmos.slashing.v1beta1.MsgUpdateParams |
| /cosmos.staking.v1beta1.MsgUpdateParams |
| /cosmos.upgrade.v1beta1.MsgCancelUpgrade |
| /cosmos.upgrade.v1beta1.MsgSoftwareUpgrade |
| /cosmwasm.wasm.v1.MsgExecuteContract |
| /cosmwasm.wasm.v1.MsgIBCCloseChannel |
| /cosmwasm.wasm.v1.MsgIBCSend |
| /cosmwasm.wasm.v1.MsgInstantiateContract |
| /cosmwasm.wasm.v1.MsgInstantiateContract2 |
| /cosmwasm.wasm.v1.MsgMigrateContract |
| /cosmwasm.wasm.v1.MsgPinCodes |
| /cosmwasm.wasm.v1.MsgStoreAndInstantiateContract |
| /cosmwasm.wasm.v1.MsgStoreAndMigrateContract |
| /cosmwasm.wasm.v1.MsgStoreCode |
| /cosmwasm.wasm.v1.MsgSudoContract |
| /cosmwasm.wasm.v1.MsgUnpinCodes |
| /cosmwasm.wasm.v1.MsgUpdateContractLabel |
| /cosmwasm.wasm.v1.MsgUpdateInstantiateConfig |
| /cosmwasm.wasm.v1.MsgUpdateParams |
| /ibc.core.channel.v1.MsgAcknowledgement |
| /ibc.core.channel.v1.MsgChannelCloseConfirm |
| /ibc.core.channel.v1.MsgChannelCloseInit |
| /ibc.core.channel.v1.MsgChannelOpenAck |
| /ibc.core.channel.v1.MsgChannelOpenConfirm |
| /ibc.core.channel.v1.MsgChannelOpenInit |
| /ibc.core.channel.v1.MsgChannelOpenTry |
| /ibc.core.channel.v1.MsgRecvPacket |
| /ibc.core.channel.v1.MsgTimeout |
| /ibc.core.channel.v1.MsgTimeoutOnClose |
| /ibc.core.client.v1.MsgCreateClient |
| /ibc.core.client.v1.MsgSubmitMisbehaviour |
| /ibc.core.client.v1.MsgUpdateClient |
| /ibc.core.client.v1.MsgUpgradeClient |
| /ibc.core.connection.v1.MsgConnectionOpenAck |
| /ibc.core.connection.v1.MsgConnectionOpenConfirm |
| /ibc.core.connection.v1.MsgConnectionOpenInit |
| /ibc.core.connection.v1.MsgConnectionOpenTry |