As already said, the original bzipped file needs to have been created with pbzip2 in order for the unzipping to see any improvement.
> On 4 Apr 2014, at 05:08 pm, "René J.V. Bertin" <[email protected]> wrote: > > On Apr 04, 2014, at 17:26, Eric A. Borisch wrote: > > I must confirm Ryan's observation: > > 1.784_portia_936# time bzip2 -dc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > 39.516 user_cpu 0.198 kernel_cpu 0:39.75 total_time 99.8%CPU {0W 0X 0D 0K 0M > 0F 0R 0I 0O 0r 0s 0k 2w 0c} > # time bzip2 -dc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > 39.191 user_cpu 0.176 kernel_cpu 0:39.36 total_time 100.0%CPU {0W 0X 0D 0K 0M > 0F 0R 2I 0O 0r 0s 0k 2w 0c} > # time pbzip2 -dc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > 41.739 user_cpu 0.132 kernel_cpu 0:41.62 total_time 100.5%CPU {0W 0X 0D 0K 0M > 0F 0R 0I 0O 0r 0s 0k 2w 0c} > # time pbzip2 -dc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > 41.942 user_cpu 0.124 kernel_cpu 0:41.80 total_time 100.6%CPU {0W 0X 0D 0K 0M > 0F 0R 0I 0O 0r 0s 0k 1w 0c} > 6# time pbzip2 -v -dc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > Parallel BZIP2 v1.1.8 - by: Jeff Gilchrist [http://compression.ca] > [Jun. 10, 2012] (uses libbzip2 by Julian Seward) > Major contributions: Yavor Nikolov <[email protected]> > > # CPUs: 4 > Maximum Memory: 100 MB > Ignore Trailing Garbage: off > ------------------------------------------- > File #: 1 of 1 > Input Name: > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > Output Name: <stdout> > > BWT Block Size: 900k > Input Size: 272168185 bytes > Decompressing data... > Output Size: 1218385920 bytes > ------------------------------------------- > > Wall Clock: 40.797562 seconds > 40.935 user_cpu 0.131 kernel_cpu 0:40.80 total_time 100.6%CPU {0W 0X 0D 0K 0M > 0F 0R 0I 0O 0r 0s 0k 1w 0c} > > # time pbzip2 -v -rdc > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > > /dev/null > Parallel BZIP2 v1.1.8 - by: Jeff Gilchrist [http://compression.ca] > [Jun. 10, 2012] (uses libbzip2 by Julian Seward) > Major contributions: Yavor Nikolov <[email protected]> > > # CPUs: 4 > Maximum Memory: 100 MB > Ignore Trailing Garbage: off > ------------------------------------------- > File #: 1 of 1 > Input Name: > /opt/local/var//macports/software/clang-3.4/clang-3.4-3.4_0+analyzer+python27.darwin_10.x86_64.tbz2 > Output Name: <stdout> > > BWT Block Size: 900k > Input Size: 272168185 bytes > *Warning* Max memory limit increased to 816 MB to support 4 CPUs > Decompressing data... > Output Size: 1218385920 bytes > ------------------------------------------- > > Wall Clock: 39.034284 seconds > 39.174 user_cpu 0.125 kernel_cpu 0:39.03 total_time 100.6%CPU {0W 0X 0D 0K 0M > 0F 0R 0I 1O 0r 0s 0k 1w 0c} > > > R > _______________________________________________ > macports-users mailing list > [email protected] > https://lists.macosforge.org/mailman/listinfo/macports-users _______________________________________________ macports-users mailing list [email protected] https://lists.macosforge.org/mailman/listinfo/macports-users
