62 posts tagged with "consensus"

High level summary​

• Added a document that discuses ticking and how its used within the Consensus layer (#1385). The rendered version of this document can be accessed in our documentation page.
• The benchmarks for the UTXO-HD version of Node with the in-memory backend confirmed that its resource usage is on par-with the baseline version of the Node. There is a slight decrease in CPU usage (-9%), and a slight increase in memory consumption (+3%).
• Fixed the mempool snapshotting regression in the UTXO-HD branch (from +185% to -21%) (#1382).
• Added a Consensus section to the Cardano Blueprints (#7).
• Held the technical-working group meeting. The recording can be accessed using this link. In particular, the importance of the KES agent and its roadmap were discussed during this meeting.

High level summary​

• Opened a Draft PR for a CIP to remove EBBs from the historical chain.
• Opened a Draft PR for a CPS regarding low participation scenarios.
• Identified the threads in Cardano node which were unlabeled (#6086). We're working to add the missing labels, which will help with debugging and error tracing efforts.
• Got the results for the UTxO-HD V2 InMemory cluster run, which show that there is a regression in mempool snapshotting. Investigation is ongoing.
• Fixed the block replay tracer in the new tracing system (#6091).
• Adapted UTXO-HD to take advantage of the fact that TxOuts are forward deserializable (#1360).
• Merge PRs upstream to enable the new QueryStakePoolDefaultVote (#5055, #4860, and #1373).
• Merged LocalTxMonitor changes into network-protocols, which constitutes a first step towards enabling the LocalTxMonitor to report other dimensions of the transaction size.
• Completed first pass at a script cataloguing all of the consensus symbols used in downstream packages, as part of our contributions to the Cardano Blueprint efforts.

High level summary​

Our quarterly objectives are now drafted and can be accessed here.

The team continued working on documentation improvements, enhancing the security of the Consensus layer, and being involved in the early stages of the Peras workstream.

We are updating the UTXO-HD branch to make use of the forward-deserializability of transaction outputs (TxOuts) (see #1360, #1361, and #1362). We performed a local chain sync with a the latest version of an UTXO-HD enabled node, using the in-memory backend.

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).

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).