TIMEX(1) User Commands TIMEX(1)


NAME


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

SYNOPSIS


timex [-o] [-p [-fhkmrt]] [-s] 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


The following options are supported:

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


-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(2)/ exec(2) 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.


-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.


EXAMPLES


Example 1: Examples of timex.




A simple example:


example% timex -ops sleep 60


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


example% timex -opskmt sh
session commands
EOT


SEE ALSO


sar(1), time(1), exec(2), fork(2), times(2), attributes(5)

NOTES


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.


September 14, 1992 TIMEX(1)