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Full Discussion: Timing the shell script
Top Forums Shell Programming and Scripting Timing the shell script Post 302809433 by luhah on Sunday 19th of May 2013 11:13:22 PM
Old 05-20-2013
Timing the shell script

I have two shell scripts, one written with xargs for parallel processing (p1) and the other written in old school way (p3) [ `jobs | wc -l` -ge 25 ].

when I execute them, i get the below values.

Code:
$ time ./p1
real    0m25.36s
user    0m0.32s
sys     0m0.80s

$ time ./p3
real    0m23.25s
user    0m6.20s
sys     0m22.36s

Leaving the realtime (elasped time), what does the other time numbers mean in terms of efficiency

Thanks much

Last edited by jim mcnamara; 05-20-2013 at 12:23 AM..
 

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artswrapper(7)							       Arts							    artswrapper(7)

NAME
artswrapper - used to set real-time priority to artsd, the KDE sound system SYNOPSIS
artswrapper [OPTION] DESCRIPTION
artswrapper gives artsd the capability of running with real-time scheduling priority. This helps prevent audio skips and jumps. Except for the check option, artswrapper passes all other arguments directly to artsd. Artswrapper calls the arguments after setting the real-time priority and dropping privileges (if running as setuid root). The real-time status is passed to artsd via the environment variable STARTED_THROUGH_ARTSWRAPPER, and can be one of the following values: unset (not running as real-time), 1 (running as real-time), 2 (no privileges to set real-time scheduling), or 3 (no support for real-time scheduling). OPTIONS
check backward compatibility with old artswrapper. This only prints "okay" and exits. SECURITY
artswrapper must be used as setuid root to have privileges to set real-time scheduling. BUGS
Sometimes artsd locks the system on exit in 2.4 kernels. If this happens, use aKode library, which improves the CPU usage, helps maintain uninterrupted sound, and remove the setuid bit from artswrapper (thanks to Debian documentation and Christopher Martin). SEE ALSO
artsd, artsdsp AUTHOR
Manpage written by Rodrigo Rubira Branco <rrbranco@br.ibm.com> KDE Multimedia Jun 01, 2006 artswrapper(7)
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