Linux压缩工具gzip和pigz哪个比较好?

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  GZIP主要用于文件的压缩,而pigz则是其并行实现版本,其压缩速度比gzip更快,且充分利用多处理和多核系统,下面小编就给大家介绍下pigz吧。

  pig是个啥东东?

  一句话简介:

  代码如下:

  A parallel implementation of gzip for modernmulti-processor, multi-core machines。

  简单的说,就是支持并行的gzip。废话不多说,开始测试。

  pig默认用当前逻辑cpu个数来并发压缩,无法检测个数的话,则并发8个线程。

  一、测试压缩包文件1

  代码如下:

  压缩前

  -rw-r--r-- 1 root root 2474772480 Dec 3 19:54 dbs.tar《/p》 《p》1、gzip测试

  压缩耗时,CPU最高:101.6%

  real 2m18.042s

  user 2m10.204s

  sys 0m6.876s《/p》 《p》解压缩耗时,CPU最高:101.6%

  real 0m26.756s

  user 0m20.175s

  sys 0m6.580s《/p》 《p》压缩后

  -rw-r--r-- 1 root root 2349563863 Dec 3 19:54 dbs.tar.gz《/p》 《p》2、pigz测试

  并发8线程(默认):

  压缩耗时,CPU最高:832%

  real 0m21.710s

  user 2m31.229s

  sys 0m9.101s《/p》 《p》解压缩耗时,CPU最高:199%

  real 0m13.239s

  user 0m11.791s

  sys 0m12.426s《/p》 《p》并发4线程:

  压缩耗时,CPU最高:427.6%

  real 0m38.299s

  user 2m30.701s

  sys 0m8.369s《/p》 《p》解压缩耗时,CPU最高:202%

  real 0m13.294s

  user 0m12.154s

  sys 0m11.862s《/p》 《p》压缩后

  -rw-r--r-- 1 root root 2350161547 Dec 3 19:54 dbs.tar.gz《/p》 《p》二、测试压缩包文件2

  压缩前

  -rw-r--r-- 1 root root 5248890880 Dec 3 20:26 mysql-5.5.28-linux2.6-x86_64.tar《/p》 《p》1、gzip测试

  压缩耗时,CPU最高:101%

  real 6m20.524s

  user 6m2.466s

  sys 0m7.410s《/p》 《p》解压缩耗时,CPU最高: 101%

  real 0m58.893s

  user 0m46.258s

  sys 0m11.944s《/p》 《p》压缩后

  -rw-r--r-- 1 root root 1410045513 Dec 3 20:26 mysql-5.5.28-linux2.6-x86_64.tar.gz《/p》 《p》2、pigz测试

  并发8线程(默认):

  压缩耗时,CPU最高: 799%

  real 1m11.908s

  user 6m36.717s

  sys 0m9.860s《/p》 《p》解压缩耗时,CPU最高:179%

  real 0m33.188s

  user 0m38.069s

  sys 0m16.728s《/p》 《p》并发4线程:

  压缩耗时,CPU最高: 418%

  real 1m41.547s

  user 6m36.782s

  sys 0m9.806s《/p》 《p》解压缩耗时,CPU最高: 179%

  real 0m33.120s

  user 0m37.500s

  sys 0m16.956s《/p》 《p》压缩后

  -rw-r--r-- 1 root root 1406061442 Dec 3 20:26 mysql-5.5.28-linux2.6-x86_64.tar.gz

  结论:

  1、pigz默认用法(默认并发线程是逻辑cpu个数)可比gzip快5.3倍,CPU消耗则是gzip的8倍,压缩比则相当;

  2、并发8线程对比4线程提升:41.2%,16线程对比8线程提升:27.9%,32线程对比16线程提升:3%;

  3、在对压缩效率要求较高、但对短时间内CPU消耗较高不受影响的场景,使用pigz非常合适。

  上面就是Linux下pigz的介绍了,从本文中不难看出,pigz的压缩效率更高,但CPU的损耗也比较高,在CPU不影响的情况下,推荐使用pigz压缩文件。

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