Recorder number of process per user Post: 302949000

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Top Forums Shell Programming and Scripting Recorder number of process per user Post 302949000 by Don Cragun on Sunday 5th of July 2015 08:45:42 PM

07-05-2015

Registered User

You can simplify your pipeline a little bit... The uniq won't reorder the output, so the second sort isn't needed. Also note that the standards don't clearly specify what happens when both the -f option and the -o option to ps are given (they place conflicting requirements on the output format; so specifying both is non-portable).

Putting your code in a loop to run your command line (and add a timestamp to the start of each line) is pretty easy. If you start the following script at 10am, by default it will produce reports at about 10:00, 10:15, 10:30, 10:45, 11:00, 11:15, 11:30, 11:45, and noon and then quit. If you pass arguments to the script you can change the number of minutes between samples and the number of samples to be run. It was a written and tested using a Korn shell, but will work with any shell that meets basic POSIX conforming shell requirements for arithmetic and variable expansions.

Code:

#!/bin/ksh
# Usage: counter [ repetition_count [ minutes_between_samples ]]
# Count and report number of processing running for each user.
reps=${1:-9}	# # of samples to collect (default: 9 samples)
delay=${2:-15}	# minutes between samples (default: 15 minutes)

printf "Gathering $reps samples $delay minutes apart\n"
while :
do	DandT=$(date '+%m/%d/%y    %H:%M')
	printf 'Date        Time     User                Num_Proc\n'
	ps -A -o user|sort|uniq -c|while read count user
	do	[ "$user" = "USER" ] && continue
		printf '%-20s %-20s %7d\n' "$DandT" "$user" "$count"
	done
	reps=$((reps - 1))
	[ "$reps" -le 0 ] && break
	echo
	sleep $((delay * 60 - 2))
done

Don Cragun

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LEARN ABOUT MOJAVE

pridist.d

pridist.d(1m)							   USER COMMANDS						     pridist.d(1m)

NAME

       pridist.d - process priority distribution. Uses DTrace.

SYNOPSIS

       pridist.d

DESCRIPTION

       This  is  a  simple  DTrace  script  that samples at 1000 Hz which process is on the CPUs, and what the priority is. A distribution plot is
       printed.

       With priorities, the higher the priority the better chance the process (actually, thread) has of being scheduled.

       This idea came from the script /usr/demo/dtrace/profpri.d, which produces similar output for one particular PID.

       Since this uses DTrace, only users with root privileges can run this command.

EXAMPLES

       This samples until Ctrl-C is hit.
	      # pridist.d

FIELDS

       CMD    process name

       PID    process ID

       value  process priority

       count  number of samples of at least this priority

BASED ON

       /usr/demo/dtrace/profpri.d

DOCUMENTATION

       DTrace Guide "profile Provider" chapter (docs.sun.com)

       See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
       bose descriptions explaining the output.

EXIT

       pridist.d will sample until Ctrl-C is hit.

SEE ALSO

       dispadmin(1M), dtrace(1M)

version 0.90							   Jun 13, 2005 						     pridist.d(1m)