Php/docs/function.getrusage
getrusage
(PHP 4, PHP 5, PHP 7)
getrusage — 获取当前资源使用状况
说明
getrusage
([ int $who
= 0
] ) : array
这是 getrusage(2) 的接口。它返回了调用自系统的数据。
参数
who
- 如果
who
是 1,getrusage 会使用RUSAGE_CHILDREN
来调用。
返回值
返回了一个包含系统返回数据的关联数组。所以条目均可通过文档中字段的名称来访问。
范例
Example #1 getrusage() 例子
<?php$dat = getrusage();echo $dat["ru_oublock"]; // number of block output operationsecho $dat["ru_inblock"]; // number of block input operationsecho $dat["ru_msgsnd"]; // number of IPC messages sentecho $dat["ru_msgrcv"]; // number of IPC messages receivedecho $dat["ru_maxrss"]; // maximum resident set sizeecho $dat["ru_ixrss"]; // integral shared memory sizeecho $dat["ru_idrss"]; // integral unshared data sizeecho $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 receivedecho $dat["ru_nvcsw"]; // number of voluntary context switchesecho $dat["ru_nivcsw"]; // number of involuntary context switchesecho $dat["ru_nswap"]; // number of swapsecho $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)?>
更新日志
版本 | 说明 |
---|---|
7.0.0 | 此函数现在开始支持 Windows。 |
注释
Note:
在 Windows 上 getrusage() 仅会返回以下类型:
"ru_stime.tv_sec"
"ru_stime.tv_usec"
"ru_utime.tv_sec"
"ru_utime.tv_usec"
"ru_majflt"
(only ifwho
isRUSAGE_SELF
)"ru_maxrss"
(only ifwho
isRUSAGE_SELF
)If getrusage() is called with
who
set to1
(RUSAGE_CHILDREN
), then resource usage for threads are collected (meaning that internally the function is called withRUSAGE_THREAD
).
Note:
在 BeOS 2000,仅会返回以下类型:
"ru_stime.tv_sec"
"ru_stime.tv_usec"
"ru_utime.tv_sec"
"ru_utime.tv_usec"
参见
- 你系统上 getrusage(2) 的 man page