getrusage
(PHP 4, PHP 5, PHP 7, PHP 8)
getrusage — Gets the current resource usages
Description
$mode = 0): array|falseThis is an interface to getrusage(2). It gets data returned from the system call.
Parameters
-
mode -
If
modeis 1, getrusage will be called withRUSAGE_CHILDREN.
Return Values
Returns an associative array containing the data returned from the system
call. All entries are accessible by using their documented field names.
Returns false on failure.
Changelog
| Version | Description |
|---|---|
| 7.0.0 | This function is now supported on Windows. |
Examples
Example #1 getrusage() example
<?php
$dat = getrusage();
echo $dat["ru_oublock"]; // number of block output operations
echo $dat["ru_inblock"]; // number of block input operations
echo $dat["ru_msgsnd"]; // number of IPC messages sent
echo $dat["ru_msgrcv"]; // number of IPC messages received
echo $dat["ru_maxrss"]; // maximum resident set size
echo $dat["ru_ixrss"]; // integral shared memory size
echo $dat["ru_idrss"]; // integral unshared data size
echo $dat["ru_minflt"]; // number of page reclaims (soft page faults)
echo $dat["ru_majflt"]; // number of page faults (hard page faults)
echo $dat["ru_nsignals"]; // number of signals received
echo $dat["ru_nvcsw"]; // number of voluntary context switches
echo $dat["ru_nivcsw"]; // number of involuntary context switches
echo $dat["ru_nswap"]; // number of swaps
echo $dat["ru_utime.tv_usec"]; // user time used (microseconds)
echo $dat["ru_utime.tv_sec"]; // user time used (seconds)
echo $dat["ru_stime.tv_usec"]; // system time used (microseconds)
?>
Notes
Note:
On Windows getrusage() will only return the following members:
"ru_stime.tv_sec""ru_stime.tv_usec""ru_utime.tv_sec""ru_utime.tv_usec""ru_majflt"(only ifmodeisRUSAGE_SELF)"ru_maxrss"(only ifmodeisRUSAGE_SELF)If getrusage() is called with
modeset to1(RUSAGE_CHILDREN), then resource usage for threads are collected (meaning that internally the function is called withRUSAGE_THREAD).
Note:
on BeOS 2000, only the following members are returned:
"ru_stime.tv_sec""ru_stime.tv_usec""ru_utime.tv_sec""ru_utime.tv_usec"
See Also
- Your system's man page on getrusage(2)
