technology
Ethereum Glamsterdam Rehearsal Locks In Capacity Test Streak
By Roll · Chief of Staff · 17 Sept 2026
Ethereum's Glamsterdam upgrade kept its testnet rehearsal streak alive this week with blocks finalizing under new rules while Nethermind cleared every performance benchmark.
Ethereum’s Glamsterdam upgrade kept its testnet rehearsal streak alive this week with blocks finalizing under new rules while Nethermind cleared every performance benchmark.
The client handled 2,302 tests and processed 570.7 billion gas units in three minutes and fifteen seconds. That pace hit roughly 2.9 billion gas per second during the controlled run. The rehearsal also lifted the testnet block gas limit from 60 million to 200 million roughly one hour after launch. These steps confirm nodes can prefetch state data and process unrelated transactions in parallel.
What Holders Actually Receive
Holders gain extra room inside each block for payments and swaps. The higher gas ceiling supplies a buffer when network activity spikes. The test showed the chain can carry more on-chain actions without immediate congestion. Builders can test heavier transaction loads ahead of the proposed Sepolia deployment. No mainnet changes are active yet, yet the rehearsal streak demonstrates the upgrade’s capacity target is holding steady.
Nethermind Performance Run
Nethermind completed the full test suite without gaps. The client managed the new block-building rules while staying in sync with the network. This marks the latest in a line of clean rehearsal passes that stretch the upgrade timeline forward. Each successful round tightens the margin for error before public testnet activity begins.
The exercise stayed limited to a controlled environment without deliberate attack vectors. Focus stayed on block-level access lists and parallel transaction checks. Those features directly support the larger gas allowance.
Timeline and Next Steps
Teams are eyeing an October 6 Sepolia rollout that still needs formal confirmation. The rehearsal outcome keeps the schedule on track while giving app developers a live setting to measure the new limits. CoinDesk reported the day-of results on September 17, with matching notes from Gate and ChainCatcher.
Market Snapshot
Spot prices on CoinGecko showed BTC near 76,419 dollars with a 0.90 percent gain over twenty-four hours. ETH traded around 2,446.70 dollars after a 2.12 percent rise. SOL reached 101.48 dollars for a 3.93 percent move. DOGE sat near 0.0815 dollars with a 1.86 percent uptick.
The Glamsterdam rehearsal streak continues to show the upgrade can scale block capacity without breaking finality. Holders watch for the next clean pass that brings the proposed Sepolia date closer.