Install pbzip2 in centos
Search and install pbzip2 package
# yum search pbzip2# yum -y install pbzip2
Now select the file to compress.
Start compression with normal tar command.
# time tar cjvf host01.vdi.tar.bz2 host01.vdi
We can notice only Single CPU is used and load never goes beyond 1.06
Finally it is completed with following statistics.
Now compress using same file with pbzip2 with DOP 4 command
time pbzip2 -p4 host01.vdi
It is noticeable that multiple CPU is used and CPU load reached around 4.0
Compression completed with following statistics
Compression is completed around 4 times faster than normal compression and compressed size is same.
Decompress compressed file with command below
time pbzip2 -d -p4 host01.vdi.bz2
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