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Questions tagged [gas-price]

Questions dealing with the gas price of a transaction.

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15 views

GasPrice: is dipendent by the moment of the call and/or the network?

I'm testing a system to store a small amount of data on the blockchain using a contract. So I've some js using web3.js to make a call to a contract function that mutates states. I obtained, using ...
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25 views

Using web3.py to send a 0 price gas erc20 transaction

Sorry about the formatting, I’m on mobile I'm trying to push an ERC20 Token transaction with 0 gas price using web3.py. Although when I set the gas price to 0, I receive the following error: {'code':...
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31 views

0 gas transaction underpriced in pushtx? [closed]

I want to do a pushtx with 0 gas but when I do I get the 'transaction underpriced' error. I've seen transactions with 0 gas before. Why can I not do it?
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2answers
32 views

How can I send tokens to large number of addresses?

I have to send 221,000 tokens (ERC20) to 6477 different addresses. Airdrop guy used some automatic sending app and that tells 1.94 ETH is needed as approx cost of operation to send all this. Is there ...
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1answer
380 views

What's the vulnerability in my contract?

I've got a contract deployed at 0xe559835D7979dAe994331DEfaEc2FBA057E56C27 on the mainnet. Every time I go to call the payable function, which is solve, a bot beats me to it. My transaction gets ...
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3answers
30 views

How can I get proper gas price for fast transaction?

How can I get proper and optimized gas price for fast transaction in around 10sec? I want to make my transactions to be included stably and fast in blocks. Recently I using value of "fast" returned ...
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3answers
258 views

Can I mine only low-value blocks?

I'm new into this world. I (think to) know that usually blocks are mined from most rewarded to less rewarded. So if I offer very low gas price for a transaction, it can be take a long time to be ...
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10 views

Is there same offical article about how Ethereum Gas Tracker calcluate price?

Is there same offical article about the approach how ethscan.io's gas tracker get price and time? I think it calculate form the transaction hisotry in last 1000 block.But no article or code can be ...
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18 views

How Gas Cost is defined in EVM gas table?

i was checking into EVM gas table (https://docs.google.com/spreadsheets/d/1n6mRqkBz3iWcOlRem_mO09GtSKEKrAsfO7Frgx18pNU/edit#gid=0) (even though it is old sheet) Have few question: On what basis for ...
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1answer
22 views

Can I estimate the total gas limit of several dependent transactions?

Assume two dependent transactions A and B. Transaction B depends on transaction A and will fail if transaction A has failed. I would like to estimate the gas limit required for the success of both ...
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1answer
14 views

What's the best way to get gas price in next block

our wallet project is requried some update about gas price 1 not set gasprice by user 2 auto choose the best gas price Current, I am using rpc method eth_gasPrice in my wallet's code to get gas ...
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2answers
30 views

Internal contract-to-contract call

I am confused with the following sentence in the Solidity documentation: During the execution of the fallback function, the contract can only rely on the “gas stipend” it is passed (2300 gas) being ...
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20 views

How can we increase block gasLimit without reinitialiting the genesis block? [duplicate]

Is it possible to increase block gas limit without reinitializing the blockchain ?
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1answer
19 views

What makes a transaction not mined and stay in txpool?

What Makes a transaction in txPool not mined ?
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1answer
27 views

What is the unit for the tx.gasprice?

Is it a wei, kwei, mwei, gwei, ... Something else? The API doesn't say much.
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0answers
12 views

How to use oraclize fee from contract balance instead of sender's wallet? [duplicate]

I am using oraclize query. I have a function that user's invoke but I dont want users to pay the gas fee for oraclize query, I want that fee to be paid by my contract balance, and if my balance is not ...
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21 views

Is Gas consumed in boolean operations that do not change contract state?

Imagine I've created a voting contract, and I'm the owner of this contract. I'm going to deploy it and create a front end to interact with it. Within my contract i've everything secured to add ...
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2answers
48 views

How to reduce the gas price for complicated smart contracts?

This is my smart contract's calculateReward function: function calculateReward(uint256 _amount, address _sender) internal view returns (uint256) { uint256 reward = 0; for (uint256 i= ...
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1answer
56 views

Apparently some people send transactions with zero gas and positive gas limit, how do they do this? (and I am NOT planning to this but how)

Have a look at this transaction for example: https://etherscan.io/tx/0x11d96986d36240a5e5e7eab78879aa841631705370e707f15f1488a0b9d6704a 0 gas, 0 ether but plenty of tokens transferred. Obviously the ...
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0answers
15 views

How can I distribute funds to present stakers efficiently?

I am building a smart contract which keep the token holder's eths for a while and give them rewards when they withdraw. The reward is given from the ethers collected by early withdraw of people. If ...
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1answer
40 views

How can I reduce the gas price for the fallback function?

Below is my fallback function for ethereum. It currently require 91000 gaslimit which is way more than 21000. Metamask always starts the transaction with 21000 gas stipend due to which transaction ...
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1answer
183 views

Ethers js estimate gas offline?

Looking here in the docs it mentions I need to have the provider attached to estimate gas. But for formatting a transaction offline, I dont have access to the provider. Is there a way to estimate the ...
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1answer
22 views

GAS price validation for transactions in OLD blocks

How does Ethereum verify GAS price stated within transaction, to be high enough for transactions stored in past blocks? Does each block include an average GAS-bid experienced by miner at the moment ...
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0answers
51 views

How Geth classify transaction as local or non-local? txpool validateTx skips gasPrice validation for local transactions

I see geth code skips the validation of the local transactions https://github.com/ethereum/go-ethereum/blob/master/core/tx_pool.go#L528 // Drop non-local transactions under our own minimal accepted ...
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1answer
39 views

What are the parameters for the ideal gas limit?

I am new to writing smart contracts, in recent times I am having trouble in deploying the smart contracts couple of times so I need a solution for that. I am using the truffle most of the time so ...
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2answers
23 views

Sending ethereum smart contract transactions to miners

We are building a decentralized document issuance application using the ethereum blockchain. For every transaction, some gas costs deduced in the form of ether. Is it possible to host ethereum miner ...
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2answers
43 views

Does price of smart contract execution raise with price of ethereum

I can't determine properly whether higher price of ETH means smart contracts will also cost higher(in fiat not eth) and is it reciprocal, like if we have a SC deployed and eth price raises 10x, will ...
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1answer
25 views

Different between gas and gasLimit keys when executing transactions

Below is the code that I'm running. When I entered "gas" and "gasLimit" as the keys, both worked. Why is that? What does "gas" represent? And what is the optimum amount of gasLimit should I use (...
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34 views

Gas usage difference between Remix and Ganache/public networks

I'm trying to integrate a contract into a front end with MetaMask and getting different gas amounts depending on the network and compile options I use. Remix ("Enable Optimization" checked): 90,410 ...
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0answers
23 views

Most precise website to estimate gas price for volatile days

I am trying to understand which website is the best way to estimate the gasprice for volatile days. There are some sites but they do not work out so well on a volatile day like today. I compared and ...
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2answers
34 views

Effective way to compare to arrays

What is the most cost effective way to compare to arrays eg. uint arrays in solidity. Running a for loop takes too much gas.
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1answer
18 views

How much gas does looking up block.timestamp consume?

Trying to get some insight as to whether or not it's more optimal to call block.timestamp repeatedly for comparisons or to set a (memory) variable to hold the value and use it instead. I've looked at ...
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1answer
102 views

Why does gas cost explode with more than 7 variables in a struct

I'm assuming this has to do with Ethereum's 7 variable stack limit but in the following code test struct TestStruct5 { uint8 m_nOther1; uint8 m_nOther2; uint8 m_nOther3; uint8 ...
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1answer
50 views

Does ERC-20 balanceOf function cost no gas?

Given that this is a sample balanceOf function code: function balanceOf(address tokenOwner) public view returns (uint balance) { return balances[tokenOwner]; } and this function is view function,...
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0answers
52 views

Issue in setting GasPrice when sending raw transaction

I am using web3 and infura node to send my raw transaction but I am having difficulty in setting gasprice. I constructed rawtransaction as follows web3js.eth.getTransactionCount(myAddress, 'pending')...
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1answer
82 views

What is the meaning of “Gas Used” on ethgasstation.info?

It's rather confusing cos when I googled "gas used" I don't get any exact result, NOT even from ethgasstation.info and most people are talking about transaction price, gas limit, etc. So, does "gas ...
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1answer
34 views

How to calculate “gas” and “gasPrice” when referring to ethgasstation.info when sending transaction via web3js?

I'm using web3js to issue token which has a name and description. I'm using ropsten testnet. Here's my tx. const tx = { from: walletAddress, to: contractAddress, gas: 4700000, ...
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1answer
52 views

Calculated Gas Costs of Contract execution

I have a smart contract that maps a string to a string value and stores it on the Blockchain. I want to analyse the Gas Used by Transaction. One time the execution consumes 92,843 Gas (https://rinkeby....
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0answers
62 views

How to create an ethereum private network with proof of authtority without gas cost or gas price zero?

I want to create a private network but I don't need to use ether or gas, only I want to run smart contracts and the blockchain using ethereum technology. I find this tutorial Private proof of ...
3
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2answers
103 views

How to determine transaction fees using web3.py

I am using web3py to transfer tokens and ether. I need to track the transaction fees for each transaction. Given a transaction hash, how do I determine the total fee paid?
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2answers
372 views

Deploying contract with no cost (gasPrice 0) on private network

In order to achieve a no-coin bootstrapping of my private network I'm trying to deploy a first special contract having zero funds in owner wallet (every wallet of this private network should have zero ...
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2answers
697 views

How is it possible to pay 2,100 Ether ($309,267) for a transaction fee?

Here is the transaction details that has transaction fee for 2,100 Ether ($309,267.00) only for sending 0.1 Ether. There is no fairness for users, hence accidentally adding a zero might cause them ...
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1answer
22 views

Costs in gas of changing the value of a variable

Maybe a little bit weird question, but can the amount of gas, when: SSTORE is used(for changing an existing variable), be lesser than 5000 gas? If no, are there discussions in community to reduce ...
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1answer
50 views

How much does the gas prices in the main eth network differ from that in the ropsten test network

I'd like to know, to which degree does the Gas prices from the main eth network are comparable to the ropsten test network.
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1answer
448 views

Truffle and Ganache - do I need to set the same gas-price and gas-limit in both of them?

Or can I set different values? If I can set different values, then how will they be used in the system (i.e., what gas-price and gas-limit will apply in every transaction that I execute)? Here is my ...
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1answer
739 views

What's the default web3 gas price? [duplicate]

When sending a TX, there's an optional gasPrice field. If I don't set it, what's it default to? Does it look at other TXs going on or is it a fixed value that only changes when web3 gets updated to a ...
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0answers
56 views

Why account creation using CALL or SUICIDE costs 25000 gas? [duplicate]

CALL and SUICIDE both have additional cost of 25000 gas if it leads to account creation. At the same time, sending 1 wei in separate transaction costs only 21000 gas. Thereby if I am about to create ...
4
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2answers
460 views

web3.eth.getGasPrice() always return 1GWei

For estimate transaction cost, I use web3.eth.getGasPrice() function. The return callback value always 1Gwei(1,000,000,000) in ROPSTEN. web3.eth.getGasPrice(function(error, result){ console.log(...
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1answer
275 views

how to use web3j over infura to find exact gas price used for a successful transaction

my goal is to compute the cost of gas for a successful tx. I get a callback when a transaction succeeds and i retrieve gasUsed with transactionReceipt.getGasUsed(). Now I need to know the exact gas ...
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2answers
35 views

The cost of using Ethereum as a reference database

As stated in the documentation there are 3 types of storage in the Ethereum VM (EVM) The storage, the memory, and the stack Each account has a data area called storage, which is persistent ...