Note that this function returns rusage of the current process. In a web environment where you have long running apache processes that serve several requests with PHP executions, this will return cumulative timings and is therefore not suitable for telling how much user time your used. The best you could do is to call getrusage() once at the beginning and once at the end and calculate the difference.
getrusage
(PHP 4, PHP 5, PHP 7)
getrusage — Gets the current resource usages
Опис
array getrusage
([ int
$who = 0
] )This is an interface to getrusage(2). It gets data returned from the system call.
Параметри
-
who -
If
whois 1, getrusage will be called withRUSAGE_CHILDREN.
Значення, що повертаються
Returns an associative array containing the data returned from the system call. All entries are accessible by using their documented field names.
Приклади
Приклад #1 getrusage() example
<?php
$dat = getrusage();
echo $dat["ru_nswap"]; // number of swaps
echo $dat["ru_majflt"]; // number of page faults
echo $dat["ru_utime.tv_sec"]; // user time used (seconds)
echo $dat["ru_utime.tv_usec"]; // user time used (microseconds)
?>
Журнал Змін
| Версія | Опис |
|---|---|
| 7.0.0 | This function is now supported on Windows. |
Примітки
Зауваження:
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 if
whoisRUSAGE_SELF)- "ru_maxrss" (only if
whoisRUSAGE_SELF)If getrusage() is called with
whoset to 1 (RUSAGE_CHILDREN), then resource usage for threads are collected (meaning that internally the function is called withRUSAGE_THREAD).
Зауваження:
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"
Прогляньте Також
- Your system's man page on getrusage(2)
add a note
User Contributed Notes 3 notes
jlh at gmx dot ch ¶
7 years ago
Domas Mituzas ¶
16 years ago
getrusage() reports kernel counters that are updated only once application loses context and a switch to kernel space happens. For example on modern Linux server kernels that would mean that getrusage() calls would return information rounded at 10ms, desktop kernels - at 1ms.
getrusage() isn't usable for micro-measurements at all - and getmicrotime(true) might be much more valuable resource.
Anonymous ¶
5 years ago
BeOS support is removed in PHP 7.3:
https://github.com/php/php-src/blob/php-7.3.0alpha1/NEWS
