Questions tagged [gas]
Gas is a 'sub-currency' which enables the EVM and Ethereum's decentralised computer to run -- with each operation, an amount of gas (proportional to the computational effort required to perform the operation) is consumed.
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How to estimate gas cost for a polygon zk evm transaction?
I understand how to estimate gas cost for L2s like Arbitrum and Optimism because their documents provide some details, e.g. total gas cost = L1 poster fee + L2 network fee. But I really cannot find ...
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How to query or compute historical gas usage by address?
I'm trying to understand how services like fees.wtf calculate lifetime gas used by and address. Is there an JSON-RPC call or would I have to run a modified full node to index?
Similarly for top gas-...
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Gas reporter does not report gas usage for low level calls
I am using npx hardhat test command to get the gas usages analysis. My configuration to get the report is like below. In my tests. I have tests for deployment, functions calls, but also some other ...
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gas estimation error because of reverted
here is a situation I have: a user came to my platform to buy mytoken and he paid 44 matic for it and 266,087 | 263,663 (99.09%) which reverted because of the gas out. is there any solution to add gas ...
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Do gas prices vary based on volume of transaction?
Do gas prices vary based on volume of transaction ?
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Setting High Gas Limit
I hope you guys are doing well! I am new to the Web3 space, so please excuse my ignorance.
After viewing numerous tutorials, many of the tutorials like to do this when setting the gas limit
const ...
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How can I control how much gas is left in the middle of a function?
I am working on an ethernaul challenge (below). The challenge is to successfully call enter(). I have it all solved except for the part where gasleft() % 8191 has to be 0. I tried using a while (while ...
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Why smart contract call() is cheaper than sendTransaction when send ether to a wallet holding ether
// Solidity
function sender(address payable _to, uint _value) private {
(bool success,) = _to.call{value: _value}("");
require(success,"Fail Send By Call"); }
// ethers
...
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ELI5: Converting an arbitrary gas cost in Remix IDE to USD
Let's say the gas (transaction) cost of a function in Remix is 139508. How would I easily convert this to USD?
I know this is a totally noob question and I know better, but I can't for the life of me ...
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New Account with no transaction
I'm working with my metamask wallet to interact with my DApp. While reading about data in Ethereum, I read that the blocks in the chain do not store any account information. It will have only ...
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Optimizing Gas Costs and Replacing For Loops in Solidity Function with Large Dataset
I have a Solidity smart contract with a function drawLottery that processes a large dataset of potentially 1 million tickets. The function contains several for loops for iterating through the tickets ...
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Gas griefing in "typed" external calls
I was wondering whether the "insufficient gas griefing attack" is possible in cases when the external call is a typed call rather than an inline call with lower level utility functions (i.e. ...
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trying to create contract on anvil/forge get error intrinsic gas too high
exact message:
message: intrinsic gas too high -- CallGasCostMoreThanGasLimit, data: None
generic counter contract from how to. googling around got me some old error somewhat related but not sure ...
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Tracking the spedup transactions from metamask
while building a Dapp using metamask to make transactions, i figured that metamask is not responding correctly when a transaction is spedup, making my code wait forever for a canceled transaction that ...
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What is the most efficient way to make sure there are no duplicates in an array?
Is a nested for loop (like below) the best and most gas efficient way to make sure there are no duplicates in say an array of addresses? I can't think of a better one but it seems very inefficient
for(...
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Solidity variable for contract scope (not state variables)?
I use state variables for the interaction of calls (fallback) between contracts. But copying and clearing state variables uses a lot of gas.
Perhaps there is a better practice, how to have temporary ...
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Can eth_estimateGas estimate gas for past blocks?
In my understanding, the eth_estimateGas json rpc method can currently only be used to estimate how much gas would be needed for a transaction based on the current/latest state of the blockchain.
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Deploying On Remix Returned Error 32000 Gas Issue?
So i am trying to publish a smart contract using a guide.
https://github.com/tanishbaansal/legendary_token/blob/main/Legendary.sol
When i am trying to deploy to livenet it gives me the following error,...
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How to Determine the Optimal Gas Limit for Maximum Gas Refund without Excess?
I'm optimizing the gasLimit for transactions to ensure the maximum possible gas refund without leaving any unused gas. Given most web3 network's have a maximum gas refund policy where a portion of the ...
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Converting an optimized for addition loop into inline assembly (0.8.20)
I have to loop through an array that will contain <10 addresses. I've already optimized for gas costs as much as possible using native Solidity. But I realized this loop can be improved further ...
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Are storage variables tightly packed like struct fields?
Tight variable packing is a known coding pattern in Solidity for saving gas by placing struct fields that are lower than 256 bits closer to one another.
Does this logic apply to storage variables? ...
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How does Gelato's Relay service work? How is it possible for another wallet to send my signed transaction (matching sender address) and pay gas?
How does Gelato's Relay service (used by gnosis safe relayer) work? How is it possible for another wallet to send my signed transaction (matching sender address) and pay gas? Does it require Gnosis to ...
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Why don't ETH transfers cost more when the recipient's balance is zero?
The SSTORE opcode has differential pricing depending on what the original, current, and new storage values are (see EIP-2200 for the full details). In short, the idea is that setting a zero value to a ...
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Remove the element from array where order matters?
I am presenting my use case here. Let's think of a dating app where each candidate enters their preferences and we store their data and add them to an array. when someone enters that matches with any ...
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Why is Transaction Value showing 0 ETH on Etherscan?
I'm not sure why the transaction value on Etherscan is showing as 0 ETH when the transaction was confirmed.
According to the recipient, they haven't received anything in their wallet either and I'm ...
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Read from a state variable without sending a transaction
https://solidity-by-example.org/state-variables/
the site says "you can read state variables, for free, without any transaction fee". But when I do a get - call in Remix, a transaction is ...
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Eth::Client::ContractExecutionError - transaction underpriced
I am using the eth gem ruby library
https://q9f.github.io/eth.rb/
to execute a function called from the ABI but it keeps getting the error transaction underpriced. I assume that it has something to do ...
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how pay network fee for many accounts
i have crypto pay getaway in my application And we only receive Tether on the (Ethereum and BSC and Tron) networks
The application creates a wallet address for each user
0x123...User1 (Only USDT ERC-...
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Optimizing Gas Costs in Solidity Smart Contracts: Best Practices?
I'm working on a Solidity smart contract and I'm concerned about the gas costs associated with its execution. I want to optimize my contract for gas efficiency to save on transaction fees and improve ...
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How can I avoid out of gas on multiple eth transfers when looping addresses?
Hello everyone good day,
I'm working on an automated eth distribution function that sends eth to all the nft holders of a determined collection (using ERC721A as standard for the nfts), it works well ...
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Significant gas cost difference between store data in initial variable and change data
// SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.10;
// when SAVE == address(0) call setSave execution cost 22622 gas
// when SAVE != address(0) call setSave execution cost 5522 gas
...
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What is the purpose of (success); after a call?
I'm looking through the EIP-4337 account abstract sample repository and am not sure what the purpose of (success); is in the following function.
function _payPrefund(uint256 missingAccountFunds) ...
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Gas cost on mapping
I'm reading docs on Venom and they said that the problem on using mapping in ERC20 contract is "Now let's imagine that we have an erc-20 like mem-token contract with one large hashmap of token ...
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Transaction fails due to: Insufficient funds for gas * price + value
I am trying to make transactions on Polygon Mainnet, but unfortunately when I automatically try to calculate the transaction fees, the transaction gets reverted because I assume that the fees are to ...
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Can I make a contract call to refund the unused gas fee to a specific address instead of the msg.sender?
Can I make a contract call to refund the unused gas fee to a specific address instead of the msg.sender? I want to use this as a means of charging fees for my project.
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Understanding the Inner Workings of eth_estimateGas in Smart Contracts
I'm seeking clarification on how the eth_estimateGas function operates under the hood. Does it run the smart contract in a manner similar to a dry run?
When I make a call to eth_estimateGas, and I've ...
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Is there anyway to reduce gas fee for uniswap v3 ExactOutputSingleParams?
Question is simple. Is there anyway to reduce gas fee for ExactOutputSingleParams ?
function swapExactOutputSingle(uint256 amountOut, uint256 amountInMaximum) external returns (uint256 amountIn) {
...
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How to estimate gas cost to update uint256?
I have a need to update a uint256 state variable in a solidity contract that was deployed with a proxy. When calling the function to update the variable programmatically with Ethers, the total cost is ...
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How to catch the {'code': -32000, 'message': 'gas required exceeds allowance (0)'} exception in we3.py?
I'm using the estimate_gas method to get the gas estimate for the tx that I'm sending and in case balance < gas estimate I wanna trow an exception.
try:
gas_estimate = self.w3.eth.e(...
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Where do arbitrum gas fees go?
Similar question to here except, based on the arbitrum docs:
⚠️ Note: There is no protocol level incentive to run an Arbitum full node.
I know the sequencer gets paid some amount of the fee, but I ...
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Reduce gas price?
I'm working on a sniping bot on uniswap, and i have a little problem : the first ones to buy are those who pay the most. Pretty logical, but I don't really want to pay 300$ in priority gas to be the ...
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Simple function causing very high gas fees solidity
Hello everyone i just recently dpeloyed my first main net contract.
Now on solidity and locally all the fees looked good and it was quite minimal. I have this function which creates a bet and just ...
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Web3.py: 'intrinsic gas too low', how to select gasPrice and gas?
In previous question on the forum this issue was already discussed, but it does not address another one: how to select gas and gasPrice so that you wouldn't bet all wallet's money and transaction ...
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Execution Error - ERC20: Transfer Amount Exceeds Balance in Ethereum Smart Contract
I'm encountering a perplexing issue while working on an Ethereum smart contract. It seems to be a parameter related error, but I haven't been able to rectify it. The following error message is ...
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unpredictable gas limit error doesn't go away after setting gasLimit manually
I have this contract which is written in solidity and one of the functions (getMyActivity()) returns an array of structs and im trying to call it from my frontend which is written in ReactJS but i get ...
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`gas` vs. `gasLimit` fields
I am trying to submit a transaction with a gas limit set. In the documentation, I find a field referred to as gasLimit with the following description
gasLimit – the maximum amount of gas units that ...
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How to populate large integer arrays in Solidity?
I'm currently building an NFT fantasy league game on ethereum where I want to add the functionality of on demand minting of random tokens. For that I need to keep track of the tokens that are ...
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How to correctly specify maxPriorityFeePerGas?
I am trying to send a transaction quickly by adding a priority fee that is half the base fee with the following logic:
const { baseFeePerGas } = await client.getBlock();
const priorityFee = ...
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Why does my transaction not start with full gas?
Im trying to optimize the gas costs of my smart contract, and noticed a large chunk called "Initial gas" in the tenderly debugger. Upon digging further, I confirmed that the function call ...
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How much does it cost to clog the Ethereum Network exactly?
Currently the largest gas guzzler to clog the Ethereum network is the Mint contract below. Supposedly there are users purposely causing high gas prices using this function. Why would anyone do this ...
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