Ethereum’s Glamsterdam test gets last-minute fix before major capacity jump
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Summary
Ethereum developers released a last-minute update to the Prysm validator software ahead of the Glamsterdam upgrade’s Sepolia test to ensure validators produce blocks with a 200 million gas limit. Without this update, some validators would have continued producing blocks at the previous 60 million gas limit, which could have undermined the test. The test aims to verify validators’ ability to handle blocks more than three times larger before deciding on capacity for Ethereum’s main network.
Why it matters
This development matters because the test measures whether Ethereum validators can reliably process significantly larger blocks. Increasing block capacity could allow the network to handle more transactions and complex activities before users face higher fees and competition for space. The update ensures the test accurately reflects this increased block size.
Key context
Glamsterdam is a major upcoming Ethereum upgrade that first activates on the Sepolia test network, where new features are trialed using valueless tokens. Gas measures computing work in Ethereum blocks, and raising the gas limit allows more transactions per block, demanding more from validator computers. The Prysm software version 7.2.1 included the update to raise the gas limit from 60 million to 200 million, addressing an issue in the previous release which lacked the configuration change.
Key numbers and entities
Ethereum, Prysm validator software version 7.2.1, Sepolia test network, gas limit increase from 60 million to 200 million, Glamsterdam upgrade scheduled activation at 13:53:36 UTC on October 6, 2026.
What remains unclear
The source does not provide details on the long-term capacity decision for Ethereum’s main network after the test or the specific technical challenges validators might encounter with the increased block size. It also does not explain how widespread the impact of missing the update might have been on the test’s results.