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Yann Collet Cyan4973

data compression

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1,013 contributions in the last year

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Activity overview

Contributed to facebook/zstd, Cyan4973/xxHash, lz4/lz4 and 2 other repositories

Contribution activity

January 2022

Created 62 commits in 3 repositories

Created 1 repository

Cyan4973/zstd C Jan 20

Created a pull request in facebook/zstd that received 20 comments

Jan 4

[WIP] fix #2966 part 2 : do not initialize tag space

This diff disables tag initialization when using the rowHash mode. This initialization was unconditional, but it becomes the dominating operation w…

+14 −3 • 20 comments

Opened 12 other pull requests in 2 repositories

facebook/zstd 2 open 7 merged

fixed bug 44168 Jan 30
fix 44122 test error Jan 27
fix issue 44108 Jan 27
Lazy parameters adaptation - buffered mode Jan 25
fix sequence compression API in Explicit Delimiter mode Jan 22
More traces to improved debugging of literals compression Jan 21
[opt] minor compression ratio improvement Jan 7
Lazy parameters adaptation (part 1 - ZSTD_c_stableInBuffer) Jan 5
fix performance issue in scenario #2966 (part 1) Jan 4

lz4/lz4 3 merged

--test and --list return an error when parsing invalid file Jan 29
renamed unaligned -> LZ4_unaligned Jan 29
fixed bug in optimal parser Jan 29

Reviewed 38 pull requests in 3 repositories

facebook/zstd 31 pull requests

Add new CLI testing platform Jan 30
Print zlib/lz4/lzma library versions in verbose version output Jan 28
fix for -r on empty directory Jan 27
Lazy parameters adaptation (part 1 - ZSTD_c_stableInBuffer) Jan 27
fix sequence compression API in Explicit Delimiter mode Jan 26
AsyncIO compression part 2 - added async read and asyncio to compression code Jan 26
Converge sumtype (offset | repcode) numeric representation towards offBase Jan 24
AsyncIO compression part 1 - refactor of existing asyncio code Jan 24
Improved huffman depth optimization Jan 23
Change zstdless behavior to align with zless Jan 21
More traces to improved debugging of literals compression Jan 21
Trigger Release Artifact Generation on Publish Jan 21
Add GitHub Action Checking that Zstd Runs Successfully Under CET Jan 20
Zstandard v1.5.2 Jan 20
Minor lint fix Jan 20
Use faster Python script to amalgamate Jan 20
Update CI documentation Jan 19
[build][asm] Pass ASFLAGS to the assembler instead of CFLAGS Jan 18
Documentation and minor refactor to clarify MT memory management Jan 18
Prepare v1.5.2 Jan 11
x86-64: Hide internal assembly functions Jan 11
Fix tar test cases Jan 10
Fix stderr progress logging for decompression Jan 10
Fix build failure in Alpha architecture Jan 10
Refactor progress bar & summary line logic Jan 8
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Cyan4973/xxHash 4 pull requests

lz4/lz4 3 pull requests

Fix list test Jan 29
Add multiframe report to --list command Jan 29
Disable _tzcnt_u64 for ARM64EC Jan 27

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