TIMEX(1)TIMEX(1)NAMEtimex - time a command; report process data and system activity
SYNOPSIStimex [-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 char‐
acters 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 col‐
umns in the output.
-h
Instead of mean memory size, show the fraction of total
available CPU time consumed by the process during its exe‐
cution. 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 trans‐
ferred 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 ALSOsar(1), time(1), exec(2), fork(2), times(2), attributes(5)NOTES
Process records associated with command are selected from the account‐
ing 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.
Sep 14, 1992 TIMEX(1)
