time a command; report process data and system activity
timex [ options ] command
When you use the timex utility, the given command is
executed; the elapsed time (real), 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.
The following options may be specified:
List process accounting data for command and all its children.
This option works only if the process accounting software is installed.
Sub-options -f, -h, -k, -m,
-r, and -t modify the data items as follows:
Print the fork/exec flag and system exit status columns in the output.
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).
Instead of memory size, show total kilocore-minutes. A kilocore-minute
is a measure of system usage based on a process occupying 1MB of memory for
Show mean core size (the default).
Show CPU factor (user-time/(system-time + user-time)).
Show separate system and user CPU times. The number of blocks
read or written and the number of characters transferred are always reported.
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, otherwise the option is ignored.
Report total system activity (not just that due to command) that occurred
during the execution interval of command. All the data items listed in
Save the binary data into a named file in sar format.
A simple example:
timex -ops sleep 60
A terminal session of arbitrary complexity can be
measured by timing a sub-shell:
timex -opskmt sh
Process records associated with command are selected
from the accounting file /usr/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.
For SMP systems see also
timex is conformant with
AT&T SVID Issue 2.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003