Pipelined Simplex (Optimistic Verification)

[BrendanChou]

Summary

This integrates Commonware's pipelined Simplex path so a stable leader can prepare up to 100 proposals ahead of the active view and target 10 ms block intervals.

• Pin all Commonware dependencies to main at fca67b22, which contains commonwarexyz/monorepo#3416.
• Switch consensus to 1,000-view round-robin terms with a 100-view optimistic window, a 12-second stall timeout, and disabled forwarding.
• Pace proposal timestamps at 10 ms, reject timestamps more than one second ahead, retain 256 views, and adapt marshal, follower, and indexer storage integrations to the current Commonware APIs.
• Tune validator networking for this workload: 1,500/s base channels, 3,000/s voting and marshal channels, one tracked peer set, and a dedicated Rayon signature pool.
• Export validator traces to the monitoring host's private Tempo endpoint and update Grafana panels for throughput, timeouts, and regional notarization and finalization latency.
• Make validator builds explicit for Graviton (neoverse-v1) and Intel (emeraldrapids) with Docker Buildx and Just recipes.

Validation

• cargo check --locked --workspace --all-targets
• cargo test --locked --workspace --all-targets
• cargo fmt --all -- --check
• just --fmt --check
• git diff --check

[cloudflare-workers-and-pages]

Deploying alto with    Cloudflare Pages

Latest commit:	304b823
Status:	✅  Deploy successful!
Preview URL:	https://97aa927e.alto-8k4.pages.dev
Branch Preview URL:	https://bc-optimistic.alto-8k4.pages.dev

View logs

[cursor]

Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[cursor]

Large blocks exceed indexer body limit

Medium Severity

configured_max_message_size and --block-size allow payloads around 2 MiB, and tests cover that value, but indexer upload handlers still use Axum’s default 2 MiB Bytes body limit with no raised DefaultBodyLimit. Encoded blocks at that size already exceed the limit once headers and the length prefix are included, so certificate and block uploads to the indexer fail while validators keep producing those blocks.

Additional Locations (1)

• deploy/src/main.rs#L57-L63

 

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 85.65089% with 97 lines in your changes missing coverage. Please review.
✅ Project coverage is 69.70%. Comparing base (b880582) to head (304b823).

Files with missing lines	Patch %	Lines
validator/src/main.rs	35.08%	37 Missing ⚠️
follower/src/archive.rs	19.35%	25 Missing ⚠️
deploy/src/main.rs	89.14%	19 Missing ⚠️
types/src/block.rs	74.07%	14 Missing ⚠️
chain/src/application.rs	99.23%	1 Missing ⚠️
follower/src/main.rs	0.00%	1 Missing ⚠️

@@            Coverage Diff             @@
##             main     #190      +/-   ##
==========================================
+ Coverage   67.36%   69.70%   +2.34%     
==========================================
  Files          30       30              
  Lines        5619     6162     +543     
==========================================
+ Hits         3785     4295     +510     
- Misses       1834     1867      +33     

Files with missing lines	Coverage Δ
chain/src/engine.rs	99.14% <100.00%> (+0.28%)	⬆️
chain/src/indexer/backfiller/consumer.rs	84.84% <100.00%> (-0.51%)	⬇️
chain/src/indexer/backfiller/state.rs	99.43% <100.00%> (+<0.01%)	⬆️
chain/src/indexer/pusher.rs	96.39% <100.00%> (-0.04%)	⬇️
chain/src/lib.rs	98.62% <100.00%> (+1.64%)	⬆️
follower/src/engine.rs	97.77% <100.00%> (+0.01%)	⬆️
follower/src/resolver.rs	89.15% <ø> (ø)
follower/src/test_utils.rs	77.06% <100.00%> (+1.10%)	⬆️
indexer/src/lib.rs	95.76% <100.00%> (+0.11%)	⬆️
inspector/src/main.rs	0.00% <ø> (ø)
... and 7 more

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