Comments on: rzip vs. bzip2 – A short comparison http://www.guyrutenberg.com/2008/07/03/rzip-vs-bzip-a-short-comparison/ Keeping track of what I do Tue, 09 Mar 2010 19:04:58 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: K. Skotheim http://www.guyrutenberg.com/2008/07/03/rzip-vs-bzip-a-short-comparison/comment-page-1/#comment-22097 K. Skotheim Thu, 30 Jul 2009 20:36:33 +0000 http://www.guyrutenberg.com/?p=63#comment-22097 I tested rzip on a directory of 3186 files of saved webpages, mostly news articles, in the .mht format. One .mht file for each webpage containing html, pictures, js/css-files etc. Since the same pictures are used on many pages, rzip should be ideal for this task. I first tar'ed the directory into webpages.tar resulting in a 1077 MB file. gzip redused the size to 515 MB in 1m 19s bzip2 to 511 MB in 3m 59s rzip to just 247 MB in 2m 19s Using the -9 option (best compression) rzip returned 236 MB in 2m 37s. It did however use nearly one gigabyte of memory at most. Not a problem on new powerful computers, but still worth mentioning. I suspect rzip would do even better with smart sorting of the files inside the .tar-file. I tested rzip on a directory of 3186 files of saved webpages, mostly
news articles, in the .mht format. One .mht file for each webpage
containing html, pictures, js/css-files etc. Since the same pictures
are used on many pages, rzip should be ideal for this task.

I first tar’ed the directory into webpages.tar resulting in a 1077 MB file.

gzip redused the size to 515 MB in 1m 19s

bzip2 to 511 MB in 3m 59s

rzip to just 247 MB in 2m 19s

Using the -9 option (best compression) rzip returned 236 MB in 2m
37s. It did however use nearly one gigabyte of memory at most. Not a
problem on new powerful computers, but still worth mentioning.

I suspect rzip would do even better with smart sorting of the files
inside the .tar-file.

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