luxfi/kms

mirror of https://github.com/luxfi/kms.git synced 2026-10-30 16:23:36 +00:00

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zeekay cc986c328d lux/kms: orphan history at f2e793bf8 (was: kms: wire luxfi/mpc as REK backend)

Squashes all pre-rewrite history into a single root commit. Previous tree:
- 14506 commits including upstream Infisical fork history
- Multiple merge chains carrying pre-purge content

Force-rewrite per disk-space reclamation discipline. GHCR images
(1.9.9, 1.9.11) remain immutable; their git lineage is no longer
materialized.

2026-06-07 14:28:09 -07:00

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2025 revival

For IEEE checksums AVX512 can be used to speed up CRC32 checksums by approximately 2x.

Castagnoli checksums (CRC32C) can also be computer with AVX512, but the performance gain is not as significant enough for the downsides of using it at this point.

crc32

This package is a drop-in replacement for the standard library hash/crc32 package, that features AVX 512 optimizations on x64 platforms, for a 2x speedup for IEEE CRC32 checksums.

usage

Install using go get github.com/klauspost/crc32. This library is based on Go 1.24

Replace import "hash/crc32" with import "github.com/klauspost/crc32" and you are good to go.

changes

2025: Revived and updated to Go 1.24, with AVX 512 optimizations.

performance

AVX512 are enabled above 1KB input size. This rather high limit is due to AVX512 may be slower to ramp up than the regular SSE4 implementation for smaller inputs. This is not reflected in the benchmarks below.

Benchmark	Old MB/s	New MB/s	Speedup
BenchmarkCRC32/poly=IEEE/size=512/align=0-32	17996.39	17969.94	1.00x
BenchmarkCRC32/poly=IEEE/size=512/align=1-32	18021.48	17945.55	1.00x
BenchmarkCRC32/poly=IEEE/size=1kB/align=0-32	19921.70	45613.77	2.29x
BenchmarkCRC32/poly=IEEE/size=1kB/align=1-32	19946.60	46819.09	2.35x
BenchmarkCRC32/poly=IEEE/size=4kB/align=0-32	21538.65	48600.93	2.26x
BenchmarkCRC32/poly=IEEE/size=4kB/align=1-32	21449.20	48477.84	2.26x
BenchmarkCRC32/poly=IEEE/size=32kB/align=0-32	21785.49	46013.10	2.11x
BenchmarkCRC32/poly=IEEE/size=32kB/align=1-32	21946.47	45954.10	2.09x

cpu: AMD Ryzen 9 9950X 16-Core Processor

license

Standard Go license. See LICENSE for details.

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