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69 posts tagged with "consensus"

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· One min read
Damian Nadales

High level summary​

  • Made the LocalTxMonitor HasTx cross-era behavior less surprising.
  • Finalized the tests in ouroboros-consensus for the UTXO-HD branch, except the mempool-parallel test which is still failing sometimes.
  • Fixed an upstream complication in quickcheck-state-machine related to Parallel state machines which should allow us for an easier and more understandable setup of the parallel mempool tests.
  • Drafted parallel state machine testing infrastructure for quickcheck-dynamic. Eventually could be used to replace the QSM infra for mempool parallel tests.
  • Cleaned up the Cardano.API.LedgerState module, required for UTXO-HD integration.
  • We have been working on Node release 8.10. The changes upstream are integrated all the way to Node. Tests and benchmarks are pending. The versions of Consensus, Ledger, and Networking are released, and we will focus next on releasing CLI, API, and finally Node.

· One min read
Damian Nadales

High level summary​

  • Merged the alternative fs-api interface for I/O using user-supplied buffers. This feature is important because it defines lower-level primitives for the filesystem API, which opens op avenues for more use cases and more efficient I/O operations (for instance when implementing lsm-tree, which is part of our efforts to move the ledger state to disk). This feature has not been released yet.
  • Implemented new diffusion pipelining criterion .
  • Released Consensus packages containing backports for Node 8.9.1.
  • Focused on fixing the tests for ouroboros-consensus in the UTXO-HD branch. Work is ongoing.

· One min read
Damian Nadales

High level summary​

  • Completed the rebase of the production libraries for UTXO-HD on 8.9, both in ouroboros-consensus, cardano-api and cardano-node.
  • Measured sync and replay times and memory in UTXO-HD. The latest result are reported here.
  • Bugfixed the snapshot interval.
  • Added an extra case to isIncorrectClaimedFlag for Babbage and Conway eras.
  • Added a db-analyser analysis to get the UTXO size per slot. The result of the analysis is illustrated here.
  • Started integration work for Node release 8.10.
  • Reviewed the Genesis pull-requests submitted by Tweag. They are pending a final round of review.
  • Helped the current release engineer prepare the 8.9 release candidate.
  • The Consensus Team has also been helping troubleshoot known issues with 8.9 (eg snapshots causing missed leadership schedules, unexpected snapshot interval, integration tests, etc).

· One min read
Damian Nadales

High level summary​

This week we managed to integrate in the node the Consensus version of the UTxO-HD prototype that features the second version of the Ledger DB API. We also changed the epoch structure for Conway, made progress towards the Bootstrap State Machine and Peras planning. On the support front, we are investigating the impact of snapshots on missed leadership checks.