Ethereum Sets October 26 Date for Glamsterdam Upgrade on Hoodi Testnet
Ethereum is scheduled to activate its Glamsterdam upgrade on the Hoodi testnet on October 26 at 17:42 UTC, introducing changes designed to improve transaction processing and increase the network's Layer 1 throughput. The upgrade will raise Hoodi's block gas limit to 200 million, matching the limit on the Sepolia testnet, according to Wu Blockchain information attributed to the Ethereum Foundation.
The planned activation marks a key testing milestone for Glamsterdam, which introduces enshrined proposer-builder separation (ePBS) and block-level access lists (BALs). These changes are intended to support parallel transaction validation while revising how Ethereum prices certain operations, including state creation and data access.
Glamsterdam Introduces Changes to Ethereum's Execution Process
One of the upgrade's central components is enshrined proposer-builder separation, or ePBS. The mechanism brings proposer-builder separation into Ethereum's protocol design, distinguishing the role of selecting a block from the process of constructing it. Its inclusion in Glamsterdam is part of the upgrade's broader effort to improve how the network handles block production.
The upgrade will also introduce block-level access lists, known as BALs. These lists identify access to data and state associated with a block, providing information intended to help clients determine which operations can be validated in parallel. Parallel transaction validation could improve processing efficiency by allowing compatible operations to be handled without requiring every operation to be processed sequentially.
Both ePBS and BALs are central to the stated goal of increasing Ethereum Layer 1 throughput. Layer 1 refers to Ethereum's base blockchain, where transactions are executed and blocks are finalized. Improvements at this level can affect the network's ability to process activity directly on the main protocol, although the Hoodi testnet activation alone does not establish the scale of any performance gains.
Block Gas Limit Set to 200 Million
Glamsterdam will raise Hoodi's block gas limit to 200 million, bringing it into line with Sepolia, another Ethereum testnet. Gas measures the computational resources required to execute transactions and smart-contract operations. A block gas limit determines the maximum amount of gas that can be consumed by the transactions included in an individual block.
Increasing the limit provides room for more computational markets work within a block, subject to transaction complexity and other network constraints. However, the higher limit does not by itself guarantee a proportional increase in transaction throughput. The practical effects depend on execution costs, client performance and the interaction of the upgrade's other changes.
The matching 200 million limits on Hoodi and Sepolia provide a common reference point for testing the upgrade's behavior across Ethereum's test environments. Testnets allow developers to evaluate protocol changes and identify potential issues before any broader deployment decisions are made.
Revised Gas Pricing for State and Data Access
Beyond block production and transaction validation, Glamsterdam will revise gas pricing for state creation and data access. These changes affect how the computational or storage-related costs of certain operations are reflected in financial transaction execution. The announcement does not specify the individual pricing adjustments or quantify their expected effects.
The Hoodi activation is scheduled for October 26 at 17:42 UTC. The announced scope includes ePBS, BALs, the 200 million block gas limit and revised pricing for state creation and data access. These are the principal elements identified for the testnet upgrade, which is intended to support improvements in Ethereum's base-layer processing capacity.
Writer: Victoria HaleTechnology & Blockchain WriterVictoria Hale writes about blockchain technology, digital infrastructure, and the intersection of emerging technologies with finance. Her articles explore how new protocols and systems are shaping the evolving digital economy.She prioritises clarity and accuracy when explaining technical developments to a general audience.
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