Questions tagged [gas-price]

Questions dealing with the gas price of a transaction.

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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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4answers
6k views

How to get the actual Gas price?

Is there a way to get the lowest and average price miners are asking for gas? Some statistics sites seem to have prices but they are outdated.
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14 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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2answers
117 views

Sending ETH to ICO

How much ETH should I deposit in a wallet to send 1 ETH nett to an ICO considering gas and fees. I have already viewed an answer which confirms that it needs to be more than 1 ETH but the answer ...
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1answer
23 views

Function not marked as View and Pure but read only

I have a function: function test(uint value) { if (balances[msg.sender] < value) return; balances[msg.sender] -= value; } *note: the above is for illustrative purposes only. ...
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1answer
136 views

What is the unit of measurement used in GasPrice and GasLimit?

I did a check, in ethgasstation the current safeLow = 15GWei, which is equal = 15,000,000,000 wei However, when I issue eth.getBlock("latest") what I get was: > eth.getBlock("latest") { ...
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1answer
19 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
13 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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1answer
129 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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2answers
29 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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1answer
232 views

Transaction dropped. How to increase gas fee?

I sent some ether using Ledger Live, but the gas fee was too low. Id like to increase the gas fee. I was told I can do this via Ledger Etherum Wallet for Chrome. However, when I open Ledger Etherum ...
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2answers
88 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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1answer
86 views

Error with wrong calculation of gas price and value after lots of iterations

I am trying to code something that empties an address and sends that amount to my main-wallet. In order to get familiar with sending raw transactions and manually setting the eth-amount, I've tried ...
3
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1answer
263 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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0answers
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
16 views

What makes a transaction not mined and stay in txpool?

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

Question about Gas and Gas Price

In my transaction: gasPrice: 210000 blockHash: "0x69bd71736f2a5d2c83919a0de81a7de0b6b690bb6bdda3acff254d5c68f634bc", blockNumber: 3178, from: "0xc8caa71c16299b40b8579742a27ee53162886040", gas: ...
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1answer
31 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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1answer
326 views

How to get the historical Gas (Gwei) Price

I would like to get the historical Gas (Gwei) price in hourly or minutely with safelow, Standard, fast and fastest. I am aware of the etherscan.io which gives avg gas price for a day and also ...
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1answer
188 views

Can't send ether to crowdsale contract (fail) + infinite gas bug on Remix

I'm a newbie trying to make a crowdsale contract in Ropsten (deployed a token contract very well before) but i meet some problems : I can't send ether to crowdsale contract, returning a fail status ...
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1answer
375 views

Etereum tx pending - gas price

I made an ethereum tx with 21 gwei gas price. It is now pending since more then one hour. Theoretically when adoption increases and therefore more txs happen and everybody must set enough gas to be ...
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1answer
22 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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2answers
1k views

How to get Safe Low, Standard and Fast gas prices?

I was relying on web3.eth.gaPrice to get the safe gas price for my transactions, but unfortunetly this doesn't give accurate results (check eth.gasPrice is returning less value than expected). But I ...
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2answers
401 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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0answers
11 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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1answer
366 views

Why do my FAILED transactions get charged the max gas price?

I tried buying TEL on EtherDelta and had two failed transactions in a row, both charged at the max gas price, one after like 15 mins and the other instantly. How come I get charged for a failed ...
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0answers
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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2answers
716 views

Recommended Gas Limit for Single Transaction

Current mainnet gas limit per block is 8M (7.99), that of Ropsten is 9M (which is actually rather surprising as it was 4.7M two months ago and I did complain about it...). Given the above, what's the ...
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1answer
40 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
14 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
328 views

eth.gasPrice is returning less value than expected

As mentioned in documentation eth.gasPrice returns the current gas price. The gas price is determined by the x latest blocks median gas price. I was relying on this method to estimate current gas ...
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1answer
38 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
21 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
45 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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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
39 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 ...
2
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2answers
111 views

Does more tps = lower gas price?

Lets say that Ethereum is running at 95-100% of max tps, wich means gas price will rise. And then lets say we update the blockhain and dobble the tps. Would that lead to a halving of gas price?
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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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0answers
31 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 ...
6
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2answers
322 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
33 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
47 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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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 ...
3
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2answers
141 views

Can i compel miners to privilege my transaction by setting a high gas limit?

I'm trying to send ether to a contract that has a fixed gas price, so I want to know if I can incentive miners to accept my transaction before someone else's by setting a high gas limit. Do miners ...
5
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1answer
101 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
41 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
50 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
72 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 ...