Ethereum consensus client in Rust
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Michael Sproul da4ca024f1 Use SmallVec in Bitfield (#3025)
## Issue Addressed

Alternative to #2935

## Proposed Changes

Replace the `Vec<u8>` inside `Bitfield` with a `SmallVec<[u8; 32>`. This eliminates heap allocations for attestation bitfields until we reach 500K validators, at which point we can consider increasing `SMALLVEC_LEN` to 40 or 48.

While running Lighthouse under `heaptrack` I found that SSZ encoding and decoding of bitfields corresponded to 22% of all allocations by count. I've confirmed that with this change applied those allocations disappear entirely.

## Additional Info

We can win another 8 bytes of space by using `smallvec`'s [`union` feature](https://docs.rs/smallvec/1.8.0/smallvec/#union), although I might leave that for a future PR because I don't know how experimental that feature is and whether it uses some spicy `unsafe` blocks.
2022-02-17 23:55:04 +00:00
.github Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
account_manager Allow per validator fee recipient via flag or file in validator client (similar to graffiti / graffiti-file) (#2924) 2022-02-08 19:52:20 +00:00
beacon_node Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
book Update block reward API docs (#3013) 2022-02-11 11:02:09 +00:00
boot_node v2.1.3 (#3017) 2022-02-11 01:54:33 +00:00
common Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
consensus Use SmallVec in Bitfield (#3025) 2022-02-17 23:55:04 +00:00
crypto Lazy hashing for SignedBeaconBlock in sync (#2916) 2022-01-14 07:20:54 +00:00
lcli v2.1.3 (#3017) 2022-02-11 01:54:33 +00:00
lighthouse Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
scripts local testnet: Fix an error on startup (#2973) 2022-01-31 22:55:06 +00:00
slasher Additional networking metrics (#2549) 2021-12-22 06:17:14 +00:00
testing Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
validator_client Allow per validator fee recipient via flag or file in validator client (similar to graffiti / graffiti-file) (#2924) 2022-02-08 19:52:20 +00:00
.dockerignore Update spec tests to v1.1.0-beta.4 (#2548) 2021-09-25 05:58:35 +00:00
.editorconfig Add editorconfig template 2019-03-11 15:09:57 +11:00
.gitignore Delete uncompressed genesis states (#2092) 2020-12-16 03:44:05 +00:00
.gitmodules Replace EF tests submodule with a makefile 2019-09-08 04:19:54 +10:00
bors.toml Add Windows to Bors config (#2358) 2021-05-20 00:23:08 +00:00
Cargo.lock Use SmallVec in Bitfield (#3025) 2022-02-17 23:55:04 +00:00
Cargo.toml Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
CONTRIBUTING.md Update CONTRIBUTING.md (#751) 2020-01-03 10:45:53 +11:00
Cross.toml Optimise slasher DB layout and switch to MDBX (#2776) 2021-12-21 08:23:17 +00:00
Dockerfile Optimized Docker images (#2966) 2022-01-31 22:55:03 +00:00
Dockerfile.cross Update docker images to Ubuntu latest (#2862) 2021-12-15 07:44:44 +00:00
LICENSE Update License to Apache 2.0 2019-04-15 16:47:35 +10:00
Makefile Engine API v1.0.0.alpha.6 + interop tests (#3024) 2022-02-17 21:47:06 +00:00
README.md Remove gitter from readme (#2914) 2022-01-14 04:07:17 +00:00
SECURITY.md Add how users should report security vulnerabilities for this repository (#2562) 2021-09-07 01:54:05 +00:00

Lighthouse: Ethereum 2.0

An open-source Ethereum 2.0 client, written in Rust and maintained by Sigma Prime.

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Overview

Lighthouse is:

  • Ready for use on Eth2 mainnet.
  • Fully open-source, licensed under Apache 2.0.
  • Security-focused. Fuzzing techniques have been continuously applied and several external security reviews have been performed.
  • Built in Rust, a modern language providing unique safety guarantees and excellent performance (comparable to C++).
  • Funded by various organisations, including Sigma Prime, the Ethereum Foundation, ConsenSys, the Decentralization Foundation and private individuals.
  • Actively involved in the specification and security analysis of the Ethereum 2.0 specification.

Eth2 Deposit Contract

The Lighthouse team acknowledges 0x00000000219ab540356cBB839Cbe05303d7705Fa as the canonical Eth2 deposit contract address.

Documentation

The Lighthouse Book contains information for users and developers.

The Lighthouse team maintains a blog at lighthouse.sigmaprime.io which contains periodical progress updates, roadmap insights and interesting findings.

Branches

Lighthouse maintains two permanent branches:

  • stable: Always points to the latest stable release.
    • This is ideal for most users.
  • unstable: Used for development, contains the latest PRs.
    • Developers should base their PRs on this branch.

Contributing

Lighthouse welcomes contributors.

If you are looking to contribute, please head to the Contributing section of the Lighthouse book.

Contact

The best place for discussion is the Lighthouse Discord server.

Sign up to the Lighthouse Development Updates mailing list for email notifications about releases, network status and other important information.

Encrypt sensitive messages using our PGP key.

Donations

Lighthouse is an open-source project and a public good. Funding public goods is hard and we're grateful for the donations we receive from the community via:

  • Gitcoin Grants.
  • Ethereum address: 0x25c4a76E7d118705e7Ea2e9b7d8C59930d8aCD3b (donation.sigmaprime.eth).