zstdmt 命令

常用示例

说明

zstdmt is the multithreaded variant of the zstd compression utility. It automatically uses all available CPU cores for compression, equivalent to running zstd -T0, providing significantly faster throughput on multi-core systems. The compressed output is fully compatible with standard zstd files and can be decompressed by any zstd-compatible tool. All standard zstd options for compression levels, decompression, and file handling are supported. The number of threads can be set with the ZSTD_NBTHREADS environment variable. When -T0 is used, the number of detected physical CPU cores is used, capped at 256 on 64-bit systems.

参数

-T _n_

Number of threads (0 = auto).

-d

Decompress.

-1 to -19

Compression level.

--ultra

Enable ultra mode (levels 20-22).

-k, --keep

Keep source files (don't delete after compression).

-c, --stdout

Write to standard output.

-o _FILE_

Write output to FILE.

-f, --force

Overwrite output without prompting.

--rm

Remove source files after successful operation.

-r

Operate recursively on directories.

--long=_WINDOWLOG_

Enable long-range matching mode for improved compression ratio.

-B _SIZE_

Set job size (each thread processes blocks of this size).

--rsyncable

Produce rsync-friendly compressed output.