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59 posts tagged with "consensus"

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· One min read
Damian Nadales

High level summary​

  • The augmentation of headers with time, which helps simplify the way consensus handles time, is now ready for review (#1288).
  • Fixed a bug with the mempool being overly strict in rejecting certain large transactions (1352).
  • Incorporated the full rework of the block-fetch logic for bulk sync mode (#1179).
  • Released Consensus packages needed for Cardano Node 10.2 (ouroboros-consensus-protocol-0.10.0.0, release-ouroboros-consensus-diffusion-0.19.0.0, release-ouroboros-consensus-cardano-0.21.0.0, release-ouroboros-consensus-0.22.0.0).

· One min read
Damian Nadales

High level summary​

  • Well-Typed held a new lsm-trees milestone presentation, where they showed the progress in two important features:
    • Snapshots (for persisting ledger snapshots)
    • Table union (for storing more parts of the ledger state on disk)
  • Finished the UTXO-HD code review work. Since this feature could have a performance impact, we need to run a new set of system-level benchmarks before we can merge it. The next steps are detailed in this comment.
  • Submitted a request to the Technical Steering Committee on how the node should handle low apparent participation.
  • Added support for computing and checking CRCs of ledger state snapshots, which increases robustness when loading this data from disk (#1319).

· One min read
Damian Nadales

High level summary​

  • Started preparations of a TSC proposal regarding Chain Growth violations.
  • Wrote a document about the Cardano-specific instantiation of the Praos protocol theorem.
  • Georgy Lukyanov joined the Consensus team and is going through the onboarding process.

· One min read
Damian Nadales

High level summary​

  • Reviewed the UTxO HD PR, and started addressing Review comments.
  • Engaged with Researchers about to discuss the HFC simplification proposal.
  • Reverted the Babbage->Conway era transition workaround, clarifying the semantics around stake from pointer addresses (see #1297).
  • Well-Typed worked on two features for lsm-tree:
    • snapshots (for persisting ledger snapshots)
    • table union (for storing more parts of the ledger state on disk)
  • Addressed minor tech debt issues (#1269).

· One min read
Damian Nadales

High level summary​

  • Investigated performance improvements in mempool snapshotting in recent node benchmarks and discussed potential further improvements.
  • Started the review of the UTXO-HD feature branch after all the issues have been resolved.
  • Published io-classes-extra, which hosts concurrency utilities that were extracted from the consensus repository.
  • Elaborated the plan for the last quarter of 2024. You can reach out to our Discord channel for any comments or suggestions.
  • In the context of UTXO-HD, Well-typed presented another LSM-tree milestone. The implementation includes incremental merges, which prevents substantial spikes in resource usage (CPU, disk, memory), and duplicating table handles, which is crucial for efficiently representing sequences of ledger states. The test coverage of the LSM-tree library was improved as well.