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Full Discussion: Query on Running Multiple processes in background
Top Forums UNIX for Dummies Questions & Answers Query on Running Multiple processes in background Post 302456544 by gpta_varun on Friday 24th of September 2010 12:39:17 PM
Old 09-24-2010
Query on Running Multiple processes in background
HI All ,

Pardon me for asking some very basic questions,
I would be grateful if someone can help.

I am trying to execute a shell script which runs multiple processes in background. It includes various operations like copying , DB operations etc etc.

Now problem is that the complete script execution is taking a long long time, While we have optimized the DB part , I am on the lookout for other culprits.

Iam executing the script on T5K server . When executing multiple processes in background concurrently ....
1) Are all the processes allocated to a single CPU or multiple CPU ?
2) Can there be a possibility that a lot of time is wasted in scheduling the processes ?
 

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LEARN ABOUT SUNOS

times.h

times.h(3HEAD)							      Headers							    times.h(3HEAD)

NAME

       times.h, times - file access and modification times structure

SYNOPSIS

       #include <sys/times.h>

DESCRIPTION

       The <sys/times.h> header defines the structure tms, which is  returned by times() and includes the following members:

       clock_t tms_utime      /* user CPU time */
       clock_t tms_stime      /* system CPU time */
       clock_t tms_cutime     /* user CPU time of terminated child processes */
       clock_t tms_cstime     /* system CPU time of terminated child processes */

       The clock_t type is defined as described in <sys/types.h>.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       times(2), types.h(3HEAD), attributes(5), standards(5)

SunOS 5.10							    10 Sep 2004 						    times.h(3HEAD)
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