time(1) [ultrix man page]

time(1) 						      General Commands Manual							   time(1)

Name
       time - time a command

Syntax
       time command
       /bin/time command

Description
       The  command  lets  the specified command execute and then outputs the amount of elapsed real time, the time spent in the operating system,
       and the time spent in execution of the command.	Times are reported in seconds and are written to standard error.

       If you are using any shell except the C shell, you can give the command as shown on the first line of the Syntax section.  If you are using
       the  C shell, you must use the command's full pathname as shown on the second line of the Syntax section.  If you do not use the full path-
       name, will execute its own built-in command that supplies additional information and uses a different output format.

       The command can be used to cause a command to be timed no matter how much CPU time it takes.  For example:
       % /bin/time cp /etc/rc /usr/bill/rc
	       0.1 real 	0.0 user	 0.0 sys
       % /bin/time nroff sample1 > sample1.nroff
	       3.6 real 	2.4 user	 1.2 sys
       This example indicates that the command used negligible amounts of user and system time and had an elapsed time of 1/10 second (0.1).   The
       command used 2.4 seconds of user time and 1.2 seconds of system time, and required 3.6 seconds of elapsed time.

Restrictions
       Times are measured to an accuracy of 1/10 second.  Thus, the sum of the user and system times can be larger than the elapsed time.

See Also
       csh(1)

																	   time(1)

rusage(1B)					     SunOS/BSD Compatibility Package Commands						rusage(1B)

NAME

       rusage - print resource usage for a command

SYNOPSIS

       /usr/ucb/rusage command

DESCRIPTION

       The  rusage command is similar to time(1). It runs the given command, which must be specified; that is, command is not optional as it is in
       the C shell's timing facility. When the command is complete, rusage displays the real (wall clock), the system CPU, and the user CPU  times
       which  elapsed during execution of the command, plus other fields in the rusage structure, all on one long line. Times are reported in sec-
       onds and hundredths of a second.

EXAMPLES

       Example 1 The format of rusage output

       The example below shows the format of rusage output.

	 example% rusage wc /usr/share/man/man1/csh(1)
	 3045	13423	78071 /usr/share/man/man1/csh(1)
	 2.26 real 0.80 user 0.36 sys 11 pf 38 pr 0 sw 11 rb 0 wb 16 vcx 37
		  icx 24 mx 0 ix 1230 id 9 is
	 example%

       Each of the fields identified corresponds to an element of the rusage structure, as described in getrusage(3C), as follows:

       real			  elapsed real time
       user	 ru_utime	  user time used
       sys	 ru_stime	  system time used
       pf	 ru_majflt	  page faults requiring physical I/O
       pr	 ru_minflt	  page faults not requiring physical I/O
       sw	 ru_nswap	  swaps
       rb	 ru_inblock	  block input operations
       wb	 ru_oublock	  block output operations
       vcx	 ru_nvcsw	  voluntary context switches
       icx	 ru_nivcsw	  involuntary context switches
       mx	 ru_maxrss	  maximum resident set size
       ix	 ru_ixrss	  currently 0
       id	 ru_idrss	  integral resident set size
       is	 ru_isrss	  currently 0

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), time(1), getrusage(3C), attributes(5)

BUGS

       When the command being timed is interrupted, the timing values displayed may be inaccurate.

SunOS 5.11							    14 Sep 1992 							rusage(1B)