Ethereum’s latest rehearsal for its Glamsterdam upgrade continued confirming blocks after adopting new block-building rules earlier this week, clearing a key test before a proposed October 6 rollout on the Sepolia public test network.
Nethermind, software used by computers that run Ethereum, followed on Wednesday with a performance test covering one of Glamsterdam’s biggest changes.
Its client completed all 2,302 tests while processing 570.7 billion gas in three minutes and 15 seconds, an average of about 2.9 billion gas per second.
The benchmark measured Nethermind’s execution software rather than the speed of the full network. It tested block-level access lists, which tell Ethereum computers which accounts and stored data a block will use before they begin processing it.
That advance notice lets the computers fetch data and check unrelated transactions at the same time. Ethereum currently processes much of that work in sequence, limiting how much activity it can safely fit into each block.
Glamsterdam raised its block gas limit from 60 million to 200 million about an hour after going live on the testnet. Gas measures the computing work required by transactions, so the higher ceiling creates room for more payments, token swaps and other activity in each block.
How that helps Ethereum
A 200 million limit would let Ethereum absorb more activity before users begin outbidding one another for block space, which could make fee spikes less severe when trading surges or a popular token launch clogs the network.
Larger blocks are also harder to check and could leave smaller operators unable to keep up. Glamsterdam is Ethereum’s attempt to gain that extra capacity without making the chain prohibitively expensive to run.
Specialized builders package transactions, while validators check the resulting blocks and secure the chain. Glamsterdam would place that handoff and the accompanying payments inside Ethereum’s own rules, reducing dependence on outside relay services.
The change also extends the time available to spread block data across the network from about two seconds to nine seconds. That gives validators longer to receive and check the larger blocks Glamsterdam is designed to support.
As such, the 200 million limit remains a test setting rather than a commitment for Ethereum’s main network. Devnet-11 was also designed as a controlled rehearsal without deliberate attacks.