sys_getloadavg
(PHP 5 >= 5.1.3)
sys_getloadavg — Gets system load average
说明
array sys_getloadavg ( void )Returns three samples representing the average system load (the number of processes in the system run queue) over the last 1, 5 and 15 minutes, respectively.
返回值
Returns an array with three samples (last 1, 5 and 15 minutes).
范例
Example #1 A sys_getloadavg() example
<?php
$load = sys_getloadavg();
if ($load[0] > 80) {
header('HTTP/1.1 503 Too busy, try again later');
die('Server too busy. Please try again later.');
}
?>
注释
Note: 此函数未在 Windows 平台下实现。
