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| author | Florian Klink <flokli@flokli.de> | 2023-02-17T17·15+0100 |
|---|---|---|
| committer | flokli <flokli@flokli.de> | 2023-03-10T10·58+0000 |
| commit | a40d2dcdcd453e44d53d44b4c1471f3b503c7cd6 (patch) | |
| tree | 66d63a4ae80b107227deaef191ce148efd775109 /tvix/store | |
| parent | fbabcf0420bcc913971d529c11d58f6f888f1002 (diff) | |
feat(tvix/store): bump fastcdc, use v2020 version r/5925
This switches away from the less canonical "ronomon" version to the implementation as described in the [paper](https://ieeexplore.ieee.org/document/9055082) by Wen Xia, et al., in 2020. That version uses 64-bit hash values and tends to be faster than both the ronomon and v2016 versions, and produces the same chunking as the 2016 version. As per https://docs.rs/fastcdc/latest/fastcdc/#implementations-1, it's the recommended choice. The crate also gained support for streaming version of chunkers: https://docs.rs/fastcdc/latest/fastcdc/#large-data, which might be useful. Change-Id: Ieabec3da54eb2b73c045cb54e51f7a216f63641e Reviewed-on: https://cl.tvl.fyi/c/depot/+/8134 Reviewed-by: raitobezarius <tvl@lahfa.xyz> Tested-by: BuildkiteCI
Diffstat (limited to 'tvix/store')
| -rw-r--r-- | tvix/store/Cargo.toml | 2 | ||||
| -rw-r--r-- | tvix/store/src/proto/grpc_blobservice_wrapper.rs | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/tvix/store/Cargo.toml b/tvix/store/Cargo.toml index 766c44cb1775..0a1ee9ce5c57 100644 --- a/tvix/store/Cargo.toml +++ b/tvix/store/Cargo.toml @@ -12,7 +12,7 @@ blake3 = { version = "1.3.1", features = ["rayon", "std"] } clap = { version = "4.0", features = ["derive", "env"] } count-write = "0.1.0" data-encoding = "2.3.3" -fastcdc = "2.0.0" +fastcdc = "3.0.0" lazy_static = "1.4.0" prost = "0.11.2" sha2 = "0.10.6" diff --git a/tvix/store/src/proto/grpc_blobservice_wrapper.rs b/tvix/store/src/proto/grpc_blobservice_wrapper.rs index 6204fc14005b..2516b5d3f933 100644 --- a/tvix/store/src/proto/grpc_blobservice_wrapper.rs +++ b/tvix/store/src/proto/grpc_blobservice_wrapper.rs @@ -157,7 +157,7 @@ impl< // initialize a new chunker // TODO: play with chunking sizes - let chunker = fastcdc::FastCDC::new( + let chunker = fastcdc::v2020::FastCDC::new( &blob_contents, 64 * 1024 / 4, // min 64 * 1024, // avg |