pigz, unpigz

It means that “A parallel implementation of gzip for modern multi-processor, multi-core machines”

pigz, which stands for parallel implementation of gzip, is a fully functional replacement for gzip that exploits multiple processors and multiple cores to the hilt when compressing data. pigz was written by Mark Adler, and uses the zlib and pthread libraries.

Manual

SYNOPSIS

pigz [ −cdfhikKlLmMnNqrRtz0…9,11 ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name … ]
unpigz [ −cfhikKlLmMnNqrRtz ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name … ]

DESCRIPTION

Pigz compresses using threads to make use of multiple processors and cores. The input is broken up into 128 KB chunks with each compressed in parallel. The individual check value for eachchunk is also calculated in parallel. The compressed data is written in order to the output, and acombined check value is calculated from the individual check values.

The compressed data for mat generated is in the gzip, zlib, or single-entr y zip for mat using the deflate compression method. The compression produces partial raw deflate streams which are concatenated byasingle write thread and wrapped with the appropriate header and trailer, where the trailer contains the combined check value.

Each partial raw deflate stream is terminated by an empty stored block (using the Z_SYNC_FLUSH option of zlib), in order to end that partial bit stream at a byte boundary. That allows the partial streams to be concatenated simply as sequences of bytes. This adds a ver y
small four to five byte overhead to the output for each input chunk.

The default input block size is 128K, but can be changed with the -b option. The number of compress threads is set by default to the number of online processors, which can be changed using the -p option. Specifying -p 1 avoids the use of threads entirely.

The input blocks, while compressed independently, have the last 32K of the previous block loaded as a preset dictionary to preser ve the compression effectiveness of deflating in a single thread.This can be turned off using the -i or --independent option, so that the blocks can be decompressed independently for partial error recovery or for random access. This also inserts an extra empty block to flag independent blocks by prefacing each with the nine-byte sequence (in hex): 00 00 FF FF 00 00 00 FF FF.

Decompression can’t be parallelized, at least not without specially prepared deflate streams for that purpose. Asaresult, pigz uses a single thread (the main thread) for decompression, but will create three other threads for reading, writing, and check calculation, which can speed up decompression under some circumstances. Parallel decompression can be turned off by specifying one process ( -dp 1 or -tp 1 ).

All options on the command line are processed before any names are processed. If no names are provided on the command line, or if “-” is given as a name (but not after “–”), then the input is taken from stdin. If the GZIP or PIGZ environment var iables are set, then options are taken from their values before any command line options are processed, first from GZIP, then from PIGZ.

Compressed files can be restored to their original for m using pigz -d or unpigz.

OPTIONS

-# --fast --best

Regulate the speed of compression using the specified digit #, where −1 or −−fast indicates the fastest compression method (less compression) and −9 or −−best indicates the
slowest compression method (best compression). -0 is no compression. −11 gives a few
percent better compression at a severe cost in execution time, using the zopfli algorithm
by Jyr ki Alakuijala. The default is −6.

-A --alias xxx

Use xxx as the name for any --zip entry from stdin (the default name is “-”).

-b --blocksiz e mmm

Set compression block size to mmmK (default 128KiB).

-c --stdout --to-stdout

Wr ite all processed output to stdout (won’t delete).

-C --comment ccc

Include the provided comment in the gzip header or zip central file header.

-d --decompress --uncompress

Decompress the compressed input.

-f --force

Force overwr ite, compress .gz, links, and to terminal.

-h --help

Displayahelp screen and quit.

-H --huffman

Compress using the Huffman-only strategy.

-i --independent

Compress blocks independently for damage recovery.

-k --keep

Do not delete original file after processing.

-K --zip

Compress to PKWare zip (.zip) single entry for mat.

-l --list List the contents of the compressed input.

-L --license

Display the pigz license and quit.

-m --no-time

Do not store or restore the modification time. -Nm will store or restore the name, but not
the modification time. Note that the order of the options is important.

-M --time

Store or restore the modification time. -nM will store or restore the modification time, but
not the name. Note that the order of the options is important.

-n --no-name

Do not store or restore the file name or the modification time. This is the default when
decompressing. When the file name is not restored from the header, the name of the
compressed file with the suffix stripped is the name of the decompressed file. When the
modification time is not restored from the header, the modification time of the compressed file is used (not the current time).

-N --name

Store or restore both the file name and the modification time. This is the default when
compressing.

-p --processes n

Allow up to n processes (default is the number of online processors)

-q --quiet --silent

Pr int no messages, even on error.

-r --recursive

Process the contents of all subdirectories.

-R --rsyncable

Input-deter mined block locations for rsync.

-S --suffix .sss

Use suffix .sss instead of .gz (for compression).

-t --test

Test the integrity of the compressed input.

-U --rle

Compress using the run length encoding strategy.

-v --verbose

Provide more verbose output.

-V --version

Show the version of pigz. -vV also shows the zlib version.

-z --zlib

Compress to zlib (.zz) instead of gzip for mat.

–

All arguments after “–” are treated as file names (for names that start with “-”)
These options are unique to the -11 compression level:

-F --first

Do iterations first, before block split (default is last).

-I, --iterations n

Number of iterations for optimization (default 15).

-J, --maxsplits n

Maximum number of split blocks (default 15).

-O --oneblock

Do not split into smaller blocks (default is block splitting).

Install

sudo apt install pigz
2.source is here

Demos

pigz [options] [files …]
-0 to -9, -11 : 压缩级别
-p n : 指定压缩核心数，默认8个
-k :压缩后保留原文件

压缩文件，压缩后生成 filename.gz文件

pigz -9 -k filename #使用cpu 的所有核数进行压缩

pigz -6 -p 10 -k filename

pigz -5 -k -p 40 src.tar

tar cvf - test/ | pigz -9 -p 40 -f > test.tar.gz

tar cf - test/ | pigz -9 -f > test.tar.gz

解压文件

gzip -d filename.gz

ungzip filename.gz

pigz -d filename.gz

unpigz filename.gz

linux平台下一个好用的并行压缩工具（cpu核数越多越快，比tar -j可以快很多倍）相关推荐

linux平台下防火墙iptables原理(转)
原文地址:http://www.cnblogs.com/ggjucheng/archive/2012/08/19/2646466.html iptables简介 netfilter/iptables( ...
【转】在 Linux 平台下使用 JNI
引言 Java 的出现给大家开发带来的极大的方便.但是,如果我们有大量原有的经过广泛测试的非 Java 代码,将它们全部用 Java 来重写,恐怕会带来巨大的工作量和长期的测试:如果我们的应用中需要访 ...
linux共享文件丢失,【干货分享】linux平台下数据文件被误删后，如何及时得知并进行恢复...
原标题:[干货分享]linux平台下数据文件被误删后,如何及时得知并进行恢复我们知道在windows平台下,一旦文件在程序中打开,则不能被删除,所以不存在误删数据文件的情况,如下图所示. 但是在LI ...
linux算法设计,嵌入式Linux平台下随机序列算法设计.doc
嵌入式Linux平台下随机序列算法设计嵌入式Linux平台下随机序列算法设计 [摘要]本文以多媒体播放器的随机不重复播放机能为切入点,针对嵌入式平台实时性要求高,处理速度不够快,但系统存储歌曲量大 ...
(转)Thrift在Windows及Linux平台下的安装和使用示例
转载自Thrift在Windows及Linux平台下的安装和使用示例 thrift介绍 Apache Thrift 是 Facebook 实现的一种高效的.支持多种编程语言的RPC(远程服务调用)框架 ...
在 Linux 平台下使用 JNI
原文地址: http://www.ibm.com/developerworks/cn/java/l-linux-jni/ 引言 Java 的出现给大家开发带来的极大的方便.但是,如果我们有大量原有的经 ...
Linux 平台下基于Qt 的电子地图的绘制
Linux 平台下基于Qt 的电子地图的绘制摘要-------------------------------------------1 关键词------------------------- ...
linux小型游戏系统设计,Linux平台下基于JAVA小游戏_设计文档.doc
Linux课程设计报告课题名称:<Linux平台下基于java小游戏设计> 专业:2011级计算机科学与技术组长:043佘清泉组员:007陈威达 008陈学仁 026赖华标 0 ...
使用Jexus实现ASP.NET在Linux平台下的部署
Hello,大家好,我是Payne,欢迎大家关注我的博客,我的博客地址是https://qinyuanpei.github.io.今天想写一点关于Linux部署ASP.NET相关的话题,为什么突然 ...

linux平台下一个好用的并行压缩工具（cpu核数越多越快，比tar -j可以快很多倍）