var sidebar_align = 'right';
var content_container_margin = parseInt('290px');
var sidebar_width = parseInt('270px');
Unanswered: Bzip2 size constraints?
Does anyone know if there are any size limitations with bzip2? I couldn't find any online?
Also, are there any size limits on the other compression methods like gzip or compress?
Thanks in advance...
Depends on the version
A few years back most programs sufferd with the 2GB limit
Here are 2 links complaining about bzip2
Consider using 7-zip
It beats bzip2 in time and size
Here is a test I've done on a 1GB log file (plain text)
For database dumps I find this best for me (speed & compression)
size zip% mm:ss.n zipped size
AP_send_20080717.log 1105986047 0.00% #N/A #N/A
gzip -1 62949561 94.31% 00:26.6 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Deflate method
bzip2 -1 31637027 97.14% 05:31.8 ||||||||||||||||||||||||||||||| Burrows-Wheeler block sort-ing algorithm
gzip -9 29785817 97.31% 01:52.1 ||||||||||||||||||||||||||||| Deflate method
7z -mx=1 22776486 97.94% 01:07.0 |||||||||||||||||||||| Lempel-Ziv based algorithm
7z -mx=1 -m0=lzma:d=4m:lc=4:fb=128 12638145 98.86% 01:32.6 |||||||||||| Lempel-Ziv based algorithm
bzip2 -9 11632622 98.95% 08:56.5 ||||||||||| Burrows-Wheeler block sort-ing algorithm
7z -m0=ppmd:o=32:mem=29 9942841 99.10% 02:50.3 ||||||||| PPM-based algorithm (very good for plain text files)
7z -mx=1 -m0=lzma:d=4m:lc=4:fb=128
Another site doing a far greater job to compare than me is:
PS. The vesions used in my tests
Last edited by pdreyer; 08-28-08 at 08:55.
Thanks for the info and links.
We have bzip2 version 0.9.0c at work and don't have 7z..
And unfortunately we are unlikely to upgrade as we are about to be bought by another company
I'll just have to make due I guess.