"Jan Psota" <[EMAIL PROTECTED]> wrote:
> Latest TCP script at the bottom (3180 bytes).
> 4 tests: 64bit dual core Athlon tmpfs / disk (reiserfs) - 60MB/s,
> 32bit Athlon tmpfs / disk (reiserfs) - 55MB/s
> Both machines were idle -- used for testing only.
> Tarball and extracted files were on different physical devices.
> Test data: linux 2.6.22/3 kernel sources for memory operations,
> for the other data average file size should bring enough info.
>
> 2 x [...] processor means 1 processor with 2 cores (2 entries in cpuinfo).
> Archive format is set to pax (Joerg).
> Let's end with it. I only wanted to send You a new version of TCP script :-).
>
> --
> Jan Psota
>
> TCP, version 2007-10-25
> Linux 2.6.22-suspend2-r2 / Gentoo Base System release 2.0.0_rc5
> 2012MB of memory, 2 x AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ 2211.348
> 512 KB 4426.24 bmips
> gcc (GCC) 4.2.2 (Gentoo 4.2.2 p1.0)
> CFLAGS="-O2 -march=k8 -pipe"
Please explain how you did compile star. Setting CFLAGS will cause the
compilation to fail.
> bsdtar: bsdtar 2.3.4 - libarchive 2.3.4
> gnutar: tar (GNU tar) 1.19
> star: star: star 1.5a85 (x86_64-unknown-linux-gnu)
>
> best time of 5 repetitions,
> src=linux-2.6.23, 291M in 23867 files, avg 13KB/file,
> archive=/tmp/tcp.tar, extract to /tmp/tcptmp
> program operation real user system %CPU speed
> bsdtar create 0.764 0.232 0.532 99.96 370308 KB/s
> gnutar create 0.743 0.200 0.512 95.87 380775 KB/s
> star create 0.587 0.040 0.820 100.00 441247 KB/s
Please try to explain why star in your tests takes more system CPU time than
other programs.
> bsdtar list 0.164 0.096 0.068 99.84 1579341 KB/s
> gnutar list 0.218 0.064 0.152 98.92 1188128 KB/s
> star list 0.359 0.044 0.240 79.09 721481 KB/s
Star's list speed is the same as with gtar, please explain your results.
> bsdtar extract 0.733 0.200 0.504 96.02 353358 KB/s
> gnutar extract 0.625 0.092 0.508 96.02 414419 KB/s
> star extract 0.875 0.096 0.980 100.00 296013 KB/s
In a comparable test, star never extracts slower than gtar.
Please explain your results.
Jörg
--
EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni)
[EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
