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Version: Testnet

Minimum Gas Prices

This section covers the management of the sequencer gas prices for your RollApp. Gas along with the calculated fees sets the amount of tokens a Sequencer charges a user to include their transaction in a block.

Getting to user fees​

  • Gas is a unit that is used to track the consumption of resources during execution.
  • Gas-Price is the amount of tokens that a user is willing to pay per unit of gas. Gas price is typically specified in the base denomination.
info

DYM native RollApps use the bridge version of DYM as the base denom: ibc/FECACB927EB3102CCCB240FFB3B6FCCEEB8D944C6FEA8DFF079650FEFF59781D)

  • Fees is the total amount that a user pays to submit a transaction. It is calculated as the product of the gas used by the transaction and the gas price the user is willing to pay.

Fee calculation formula:​

Fees=Gas×Gas-Price\text{Fees} = \text{Gas} \times \text{Gas-Price}

Updating minimum gas prices​

  1. Update min_gas_prices in app.toml

Located in ~/.roller/rollapp/config/app.toml users must first update the local Sequencer node's gas configuration.

# example
minimum-gas-prices = "10000000ibc/FECACB927EB3102CCCB240FFB3B6FCCEEB8D944C6FEA8DFF079650FEFF59781D"
  1. Update the Sequencer's onchain metadata

Users must then update the Sequencer's onchain metadata for users to correctly interact with the Sequencer. First, export the Sequencer's metadata JSON file as described here.

Then update the JSON file for gas_price, fee_denom.display, fee_denom.base , fee_denom.exponent.

Example​

gas-prices

To finalize this update users must run the Roller update command which publishes this information onchain to Dymension L1.