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op-batcher v1.7.2-rc.3 - Multi-Blob Batcher

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@sebastianst sebastianst released this 13 Mar 10:08
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🔴✨ Multi-Blob Batcher Pre-Release

The op-batcher in this release candidate has the capabilities to send multiple blobs per single blob transaction. This is accomplished by the use of multi-frame channels, see the specs for more technical details on channels and frames.

A minimal batcher configuration (with env vars) to enable 6-blob batcher transactions is:

      - OP_BATCHER_BATCH_TYPE=1 # span batches, optional
      - OP_BATCHER_DATA_AVAILABILITY_TYPE=blobs
      - OP_BATCHER_TARGET_NUM_FRAMES=6 # 6 blobs per tx
      - OP_BATCHER_TXMGR_MIN_BASEFEE=2.0 # 2 gwei, might need to tweak, depending on gas market
      - OP_BATCHER_TXMGR_MIN_TIP_CAP=2.0 # 2 gwei, might need to tweak, depending on gas market
      - OP_BATCHER_RESUBMISSION_TIMEOUT=240s # wait 4 min before bumping fees

This enables blob transactions and sets the target number of frames to 6, which translates to 6 blobs per transaction. The min. tip cap and base fee are also lifted to 2 gwei because it is uncertain how easy it will be to get 6-blob transactions included and slightly higher priority fees should help. The resubmission timeout is increased to a few minutes to give more time for inclusion before bumping the fees, because current txpool implementations require a doubling of fees for blob transaction replacements.

Multi-blob transactions are particularly interesting for medium to high-throughput chains, where enough transaction volume exists to fill up 6 blobs in a reasonable amount of time. You can use this calculator for your chain to determine what number of blobs are right for you, and what gas scalar configuration to use. Please also refer to our documentation on Blobs for chain operators.

🚢 Docker image: https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.7.2-rc.3

A full v1.7.2 release of the op-stack follows soon.

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