All Core Devs - Testing (ACDT) #69, February 9, 2026

Protocol Calls & happenings
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Agenda

Glamsterdam

Gas limit testing

  • eth/70 updates
  • benchmarking updates
  • gas repricing update
  • benchmarkoor demo

Meeting Time: Monday, February 09, 2026 at 14:00 UTC (60 minutes)

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Video, transcript & chatlog

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Meeting Summary:

The team discussed challenges with the devnet launch, including configuration issues and client synchronization problems, while also addressing concerns about the 10MB block size limit and gas limits for devnet2. Updates were provided on ePBS devnet 0 progress across various clients, with focus on basic interop testing rather than fork choice scenarios. The team reviewed implementation and testing status of ETH 70, discussed benchmarks and gas repricing work, and demonstrated a new Benchmarker tool for analyzing gas benchmarks across clients.

Click to expand detailed summary

The team discussed issues with the devnet launch, where Barnabas reported a configuration mistake requiring a $1,000 Turkey deposit and syncing problems with Nethermind and Nimbus clients. Marc and Dustin provided updates on their respective implementations, with Dustin explaining that Nimbus requires block access lists for non-finalized blocks, though this was not yet considered a spec issue. Stefan requested clients to verify if the network could run with 150 million gas, as this setting might cause issues.

The team discussed the 10MB block size limit and agreed to lower the gas limit for devnet2 to 70M or 100M to avoid hitting the size limit, with Toni noting that they should wait for a clear understanding of the new 10MB limit before increasing it further. They also discussed the need for call data repricing and the potential impact of EIP-1086 on receipts, with Ben confirming that the current implementation should be fine. The team agreed to focus on testing BALS rather than worrying about high gas limit scenarios on devnet2.

The team discussed updates on ePBS devnet 0, with various clients reporting progress on implementation and testing. Prysm and Nimbus are merging PRs and passing Alpha 2 spec tests, while Lighthouse and Lodestar are also making progress. The team clarified that DevNet Zero will focus on basic interop between clients rather than fork choice scenarios. Dustin raised a question about testing fork choice, which Barnabas addressed by mentioning an available EL branch. The team also briefly discussed the variable PTC deadline PR, with Francesco indicating that concerns about future compatibility need further consideration.

The team discussed the implementation and testing of ETH 70, with Fabio confirming readiness and testing progress, while PK reported that clients can still sync despite large receipts, a behavior they are investigating. Barnabas suggested adding the test to devnet 3, but Marius preferred testing it in isolation first due to complexity, with plans to integrate it into the devnet cycle later. The team agreed to discuss client readiness asynchronously with Barnabas and PK.

The team discussed progress on benchmarks and gas repricing. Kamil reported on benchmark testing for repricings, including compute and stateful tests, with infrastructure being the main blocker. Maria provided an overview of gas repricing work, including updates on various EIPs and their implementation timelines. The team agreed to prioritize the state growth EIP (8037) for the next devnet, while other repricing changes would follow after March. Rafael demonstrated the new Benchmarker tool, showcasing its capabilities for running and analyzing gas benchmarks across different Ethereum clients.

Next Steps:

  • Stefan: Lower gas limit to 70 million or 100 million on devnet 2
  • Clients: Double check if they can run with 150 million gas limit
  • Toni: Discuss two small changes to the specs in the breakout call on Wednesday
  • Nimbus: Continue working on Alpha.2 spec edge cases and merge PR imminently
  • Clients (EL teams): Provide branches for ePBS devnet 0 testing with Kurtosis
  • Justin and team: Continue working on variable PTC deadline PR offline
  • Fabio (Besu): Test ETH 17 implementation against other clients
  • PK: Continue testing ETH 70 with Kurtosis config and investigate why clients can still sync despite large receipts
  • Barnabas and PK: Coordinate async with clients on readiness for ETH 70 isolated devnet (target mid-week)
  • Kamil and team: Complete regeneration of stateful tests and wait for new infrastructure to run tests on mainnet and BloTNet
  • Maria: Finish updating EIP 8037 with multidimensional metering details by end of day
  • Maria: Update to-do lists to keep teams informed of gas repricing work streams
  • Clients: Prioritize implementation of State Growth EIP (8037) for next devnet (devnet 3)
  • EESTE team: Continue releasing benchmark fixtures for Benchmarker consumption
  • Client teams (non-Geth): Implement JSON payload logging for slow blocks to enable Benchmarker metrics

Recording Access:

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