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I'm comparing compression functions, and I'm surprised by what I'm seing. Maybe I'm doing something wrong, but everything I've tested has been more compressed by gzip than bzip2!
I was under the impression that bzip2 was better than gzip. Can someone give an example of data that would demonstrate this? Thanks.
Jeremy Banks
Posted 2011-05-10T05:57:47.607
Reputation: 1
3
gzip is stream-oriented, bzip2 is block-oriented. You will need several tens of kilobytes before you see an advantage with bzip2.
Ignacio Vazquez-Abrams
Posted 2011-05-10T05:57:47.607
Reputation: 100 516
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One example of many - the Linux kernel 2.6.11.0 source tarball. See http://tukaani.org/lzma/benchmarks.html for more.
Russell Davis
Posted 2011-05-10T05:57:47.607
Reputation: 1 124
Additionally, there's also "pbzip2" (the "p" is for "parallel") which takes advantage of multiple processors (by using "pthreads") for additional performance gains: http://www.compression.ca/pbzip2/
– Randolf Richardson – 2011-05-10T06:40:32.970