github ethereum-optimism/optimism v1.7.2
op-node, op-batcher, op-proposer v1.7.2 - Batcher Improvements

latest releases: op-contracts-v160-artifacts-read-implementations-backport, op-proposer/v1.10.0-rc.1, op-program/v1.4.0-rc.1...
7 months ago

⬆️ This is a strongly recommended release of op-batcher for all chain operators.

op-batcher changes

Multi-blob support in op-batcher

See release notes for v1.7.2-rc.3 for details on how to configure a multi-blob batcher.

Improved channel duration tracking

The batcher now tracks channel durations relative to the last L1 origin in a previous channel. The last channel's L1 origin is restored at startup and during reorgs.

This ensures that the desired channel duration survives restarts of the batcher, which is particularly important for low-throughput chains that use channel durations of a few hours.

There's a known quirk in the new tracking design, which leads to a slightly lower effective channel duration (~1min lower), related to how a channel timeout is determined relative to the current L1 head, not current channel's newest L1 origin. This will be improved in a future release.

Breaking compressor configuration change

The channel and compressor configuration got simplified by removal of the target-frame-size flag. The only configuration parameters left to configure the channel size are

  • max-l1-tx-size - default of 120k for calldata; for blobs this is overwritten to the max blob size
  • taget-num-frames - default of 1 for calldata; for multi-blob txs, set this to the desired amount of blobs per blob-tx (e.g. 6)
    The default compressor is the shadow compressor, which is recommended in production.

Overflow frames bug fix

The batcher now correctly estimates a channel's output size, fixing a rarely but regularly occurring bug that produced overflow frames, leading for example to a 7th blob that was sent in a second batcher transaction.

op-node changes

  • Improved peering behavior
  • Per-chain hardfork activation times via superchain-registry

Partial Changelog

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Full Changelog: v1.7.0...v1.7.2

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