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Re: compressor





On 22/08/12 16:24, Ralf Mardorf wrote:
On Wed, 2012-08-22 at 16:15 +0200, Jerome BENOIT wrote:
xz: tar Jcf

I'm using a distro that packages with xz.

I'm sure that there never was a big difference between
"gz: tar zcf" and "bzip2: tar jcf" for the length of the files,


that higly depends on the nature of the files:
if the files are compressed file, teh difference is zero;
otherwise `xz -9e' is most of the time better.


but the
time for packing and unpacking does differ very much.

bzip2 compression is a good compromised between speed and size.

xz compresses slowly, but decompress fastly.

Other criteria can enter into account:
if rsync is used, tricks may be applied.

Jerome


 Speaking for Linux
backups and audio data backups.




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