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getrusage

(PHP 4, PHP 5, PHP 7, PHP 8)

getrusage — Gets the current resource usages

Опис

getrusage(int $mode = 0): array|false

This is an interface to getrusage(2). It gets data returned from the system call.

Параметри

mode

If mode is 1, getrusage will be called with RUSAGE_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. Returns false on failure.

Приклади

Приклад #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)
echo $dat["ru_stime.tv_sec"]; // system time used (seconds)
?>

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 mode is RUSAGE_SELF)
  • "ru_maxrss" (only if mode is RUSAGE_SELF)

If getrusage() is called with mode set to 1 (RUSAGE_CHILDREN), then resource usage for threads are collected (meaning that internally the function is called with RUSAGE_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"

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