timex(ADM)                      19 June 1992                      timex(ADM)


 Name

    timex - time a command; report process data and system activity

 Syntax

    timex [ options ] command

 Description

    When you use the timex utility, the given command is executed; the
    elapsed time, user time and system time spent in execution are reported
    in seconds.  Optionally, process accounting data for the command and all
    its children can be listed or summarized, and total system activity dur-
    ing the execution interval can be reported.

    The output of timex is written on standard error.

    Options are:

    -p   List process accounting records for command and all its children.
         This option works only if the process accounting software is
         installed.  Suboptions f, h, k, m, r, and t modify the data items
         reported.  The options are as follows:

         -f   Print the fork/exec flag and system exit status columns in the
              output.

         -h   Instead of mean memory size, show the fraction of total avail-
              able CPU time consumed by the process during its execution.
              This ``hog factor'' is computed as:
              (total CPU time)/(elapsed time).

         -k   Instead of memory size, show total kcore-minutes.

         -m   Show mean core size (the default).

         -r   Show CPU factor (user time/(system-time + user-time).

         -t   Show separate system and user CPU times.  The number of blocks
              read or written and the number of characters transferred are
              always reported.

    -o   Report the total number of blocks read or written and total charac-
         ters transferred by command and all its children.  This option works
         only if the process accounting software is installed.

    -s   Report total system activity (not just that due to command) that
         occurred during the execution interval of command.  All the data
         items listed in sar(ADM) are reported.

 See also

    sar(ADM)

 Warning

    Process records associated with command are selected from the accounting
    file /usr/adm/pacct by inference, since process genealogy is not avail-
    able.  Background processes having the same user-id, terminal-id, and
    execution time window will be spuriously included.

 Examples

    A simple example:

       timex -ops sleep 60

    A terminal session of arbitrary complexity can be measured by timing a
    sub-shell:

       timex -opskmt sh
       session commands
       EOT

 Standards conformance

    timex is conformant with:

    AT&T SVID Issue 2.