Is there a way to use 7zip for decompression with emerge?
Justin schrieb: > Hey guys! > > Yesterday I found this article > http://gentoo-wiki.com/HOWTO_Speed_up_decompression_with_pbzip2 and > was very happy, because I'm an owner of an Q6600. > > So I tried to reproduce the benchmark from the wiki article but got > that bad results: > > test # time *bzip2* -d -kf linux-2.6.23.tar.bz2 > > real 0m11.672s > user 0m11.306s > sys 0m0.367s > > > test # time *pbzip2* -d -p4 -kf linux-2.6.23.tar.bz2 > > real 0m25.554s > user 0m24.862s > sys 0m0.683s > > So the parallel version took more than the double time! > > To test whether this is a problem of my Pc I tested this on an Dual > Core with the same result. > > An test with 7z was much better: > > > test # time *7za* x -y linux-2.6.23.tar.bz2 > > real 0m4.642s > user 0m8.379s > sys 0m0.327s > > > All tests where done in a tmpfs off 1GB on 2GB RAM. > > > So my questions is what did I do wrong? > > I also tested it with different CFLAGS, but my CFLAGS are basically > very conservative. (-O2 -march=prescott -pipe -fomit-frame-pointer) -- [email protected] mailing list
