Messages in this thread | | | Date | Sun, 14 Oct 2007 16:16:47 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: In response to kernel compression e-mail a few months ago. |
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On Sun, 14 Oct 2007, Jan Engelhardt wrote:
> > On Oct 14 2007 15:53, Justin Piszcz wrote: >>> >>> What's with all these odd formats, and where is .zip? :) >>> Somehow... have you tried lrzip? >> $ apt-cache search lrzip >> $ >> >> I tried most of the main ones in the standard testing distribution within >> Debian. > > Debian is not a solution to everything. > > http://ck.kolivas.org/apps/lrzip/ >
$ lrzip -L 9 linux-2.6.16.17.tar Failed to open streams in rzip_fd Fatal error - exiting
$ lrzip linux-2.6.16.17.tar -o linux-2.6.16.17.tar.lrz Failed to open streams in rzip_fd Fatal error - exiting
$ lrzip -l -L 9 linux-2.6.16.17.tar Bus error
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 22176 abc 20 0 2197m 156m 75m R 93 4.8 0:09.17 lrzip
It must grow to 3.0GB and die (this is on an x86 host)..
$ lrzip -w 1 -l -L 9 linux-2.6.16.17.tar linux-2.6.16.17.tar - compression ratio 3.127
$ du -sh *lrz 72M linux-2.6.16.17.tar.lrz
$ lrzip -w 10 -l -L 9 linux-2.6.16.17.tar linux-2.6.16.17.tar - compression ratio 3.380 $ du -sh *lrz 67M linux-2.6.16.17.tar.lrz
Does not seem to come close unless I am doing something wrong.
Also, 7z can compress/decompress on stdin and it is multi-threaded (uses 1.8-2.2 CPU/cores).
>> note that lrzip cannot operate on stdin/stdout
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