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procsystime(1m)						       procsystime(1m)

NAME
       procsystime - analyse system call times.	Uses DTrace.

SYNOPSIS
       procsystime [-acehoT] [ -p PID |	-n name	| command ]

DESCRIPTION
       procsystime prints details on system call times for processes, both the
       elapsed times and on-cpu	times can be printed.

       The elapsed times are interesting, to help identify syscalls that  take
       some  time  to  complete	(during	which the process may have slept). CPU
       time helps us identify syscalls that are	consuming CPU cycles to	run.

       Since  this  uses  DTrace,  only	 the  root  user  or  users  with  the
       dtrace_kernel privilege can run this command.

OS
       Solaris

STABILITY
       stable -	needs the syscall provider.

OPTIONS
       -a     print all	data

       -c     print syscall counts

       -e     print elapsed times, ns

       -o     print CPU	times, ns

       -T     print totals

       -p PID examine this PID

       -n name
	      examine processes	which have this	name

EXAMPLES
       Print elapsed times for PID 1871,
	      #	procsystime -p 1871

       Print elapsed times for processes called	"tar",
	      #	procsystime -n tar

       Print CPU times for "tar" processes,
	      #	procsystime -on	tar

       Print syscall counts for	"tar" processes,
	      #	procsystime -cn	tar

       Print elapsed and CPU times for "tar" processes,
	      #	procsystime -eon tar

       print all details for "bash" processes,
	      #	procsystime -aTn bash

       run and print details for "df -h",
	      #	procsystime df -h

FIELDS
       SYSCALL
	      System call name

       TIME (ns)
	      Total time, nanoseconds

       COUNT  Number of	occurrences

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

EXIT
       procsystime will	sample until Ctrl-C is hit.

AUTHOR
       Brendan Gregg [Sydney, Australia]

SEE ALSO
       dtruss(1M), dtrace(1M), truss(1)

USER COMMANDS		     $Date:: 2007-08-05	#$	       procsystime(1m)

NAME | SYNOPSIS | DESCRIPTION | OS | STABILITY | OPTIONS | EXAMPLES | FIELDS | DOCUMENTATION | EXIT | AUTHOR | SEE ALSO

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