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Ethereum miners consider increasing the block gas limit, which has both advantages and drawbacks for the network.
Ethereum (ETH) miners are currently voting to expand the block gas limit from 10,000,000 to 12,500,000 gas, according to a recent tweet from Bitfly, the parent company of Ethermine pool.
What is gas and the gas limit?
Gas is a unit that measures the amount of computational effort required to send a transaction or perform other actions on the Ethereum blockchain. It is denominated in Gwei, or extremely small fractions of ETH.
Block gas limit, in turn, is the threshold of gas that can be spent on the transactions featured within one block.
How could this vote affect the network?
If the vote comes through, it would theoretically increase the networkâs overall capacity and reduce fees. Specifically, as per Bitflyâs calculations, Ethereum blockchain would start processing around 44 transactions per second, while currently it handles 35 transactions per second on average. The firm referred to this speed bump as a âhuge milestone for the community.â
However, the increased gas limit has some potential drawbacks, too. As the threshold becomes larger, it takes more time for miners to process each block, resulting in the so-called âuncle blocksâ issue. It occurs when two different miners generate a block at the same time, and only one of these blocks joins the blockchain, essentially resulting in extra work for miners.
As Anton Bukov, CTO of 1inch, previously explained to Cointelegraph, there is also a possibility of overloading of the nodes running the network:
âOperations that cost little gas but require a lot of resources may be used to attack nodes. [...] If transaction processing starts taking 10-15 seconds, nodes will completely stagnate.â
Increases in gas limit might also prompt weaker nodes to leave the network, potentially making it less decentralized. âThatâs why the limit is raised so conservatively, and even then, usually itâs done after achieving some optimization results in client implementations,â Bukov said at the time.
Community is spilt over the vote
The recent initiative has been met with strong opposition from some community members. Core Ethereum developer PĂ©ter SzilĂĄgyi summarized Bitflyâs tweet in the following way:
âTL;DR: Ethereum miners don't give a f--- about the long term health of the network nor about DoS attacks.â
Ethereum co-founder Vitalik Buterin has also joined the discussion. According to him, about six weeks ago a Sparkpool ETH mining pool representative asked him if he supported the gas limit increase. He said that he didnât, citing SzilĂĄgyiâs views on the matter. Buterinâs position has seemingly shifted since, as he wrote:
âThat said, the last 6 weeks of high txfees have put genuine pressure on people so I don't blame them for this decision.â
Independent blockchain scalability researcher, Georgios Konstantopoulos, wrote that heâs against further block size increases and âyou should be tooâ, adding:
âYou are NOT scaling the system by increasing the block size.â
Bukov of 1inch, on the other hand, appears to favor the minersâ initiative. He told Cointelegraph:
âYou have to worry about the networkâs convenience for the community instead of longer-term state growth acceleration. Otherwise, Ethereumâs competitiveness gets affected, and more projects start considering migration to forked chains or other networks.â
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