getrusage
(PHP 4, PHP 5, PHP 7)
getrusage — Gets the current resource usages
Description
$who = 0
] ) : arrayThis is an interface to getrusage(2). It gets data returned from the system call.
Return Values
Returns an associative array containing the data returned from the system call. All entries are accessible by using their documented field names.
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 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).
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"
English translation
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Document created the 30/01/2003, last modified the 26/10/2018
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References
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