The Ethereum Foundation (EF) has announced changes to the upcoming Fusaka hard fork that will introduce a per-transaction gas limit cap.
EF announced this change via its blog today, and the update, also known as EIP-7825, is already live on the Holesky and Sepolia testnet networks. EIP-7825 is scheduled to be launched on the Ethereum mainnet when Fusaka goes live in December.
Currently, a single transaction can satisfy the 45 million gas limit for the entire block, which can inhibit parallel execution and open the door to denial of service (DOS) attacks. This change sets the per-transaction gas limit to 16.78 million to alleviate potential issues.
This change has little impact on the average user and primarily affects developers who do contract or script design that involves batch processing.
EF researcher Toni Wahrstatter posted about the change on X today, saying developers should consider testing on the Sepolia testnet, where the caps are in place, and double-check contract signatures, deployers, tools, and transaction sizes.
“This is a step towards parallel execution (see EIP-7928: Block-level access lists). By enforcing predictable transaction sizes, Ethereum prepares for higher throughput and more secure scaling,” concluded Wahrstatter.
Fusaka lays the foundation for a future pivot towards parallel execution on Ethereum. This is a modern transaction processing model in which transactions are processed concurrently rather than in the traditional sequential order.
While developers look forward to an upgrade, ETH continues to trade sideways alongside BTC as major tokens try to find footing following the October 10 market crash. ETH is down 12% over the last month, but up 48% over last year.
