TIMEX(1)

NAME

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

SYNOPSIS

timex [options] command

DESCRIPTION

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 during 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. 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
                     available 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 characters transferred by command and all its children.

-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(1) are reported.

SEE ALSO

sar(1).

WARNING

Process records associated with command are selected from the accounting file /var/adm/pacct by inference, since process genealogy is not available. 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