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<?php
function detect()
{
/**
* ----------负载计算开始----------
*/
$laodavg = shell_exec("cat /proc/loadavg | awk '{print $1,$2,$3}'");
$laodavgArray = explode(' ', $laodavg);
//获取CPU15分钟前到现在的负载平均值
$cpuLoad15Min = (float)trim($laodavgArray[2]);
//获取CPU5分钟前到现在的负载平均值
$cpuLoad5Min = (float)trim($laodavgArray[1]);
//获取CPU1分钟前到现在的负载平均值
$cpuLoad1Min = (float)trim($laodavgArray[0]);
//获取cpu总核数
$cpuCount = shell_exec('grep -c "model name" /proc/cpuinfo');
$cpuCount = (int)trim($cpuCount);
//一分钟的平均负载 / (cpu总核数 * 2),超过100则为100 不超100为真实值取整
$percent = round($cpuLoad1Min / ($cpuCount * 2) * 100, 1);
if ($percent > 100) {
$percent = 100;
}
/**
* ----------负载计算结束----------
*/
$data['load'] = $percent;
/**
* ----------cpu计算开始----------
*/
/**
* cpu使用率
*
* %Cpu(s): 0.0 us, 3.2 sy, 0.0 ni, 96.8 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
*
* us user CPU time 用户空间占用CPU百分比
* sy system CPU time 内核空间占用CPU百分比
* ni nice CPU 用户进程空间内改变过优先级的进程占用CPU百分比
* id idle 空闲CPU百分比
* wa iowait 等待输入输出的CPU时间百分比
* hi hardware 硬件中断
* si software 软件中断
* st steal 实时
*/
$topResult = shell_exec('top -b -n 1 | grep Cpu');
preg_match('/ni,(.*?)id/', $topResult, $matches);
$id = 100 - (float)trim($matches[1]);
//cpu型号
$cpuModelArray = [];
$cpuModelName = shell_exec("cat /proc/cpuinfo | grep 'model name' | uniq");
$explodeArray = explode("\n", trim($cpuModelName));
foreach ($explodeArray as $value) {
if (trim($value) != '') {
$tempArray = explode(':', $value);
array_push($cpuModelArray, trim($tempArray[1]));
}
}
//物理cpu个数
$cpuPhysical = shell_exec("cat /proc/cpuinfo | grep 'physical id' | sort -u | wc -l");
$cpuPhysical = (int)trim($cpuPhysical);
//每个物理cpu的物理核心数
$cpuPhysicalCore = shell_exec("cat /proc/cpuinfo | grep 'cpu cores' | wc -l");
$cpuPhysicalCore = (int)trim($cpuPhysicalCore);
//总物理核心数 = 物理cpu个数 * 每个物理cpu的物理核心数(每个物理cpu的物理核心数都一样吗?)
$cpuCore = $cpuPhysical * $cpuPhysicalCore;
//逻辑核心总数(线程总数)
$cpuProcessor = shell_exec("cat /proc/cpuinfo | grep 'processor' | wc -l");
$cpuProcessor = (int)trim($cpuProcessor);
/**
* ----------cpu计算结束----------
*/
$data['cpu'] = round($id, 1);
/**
* ----------内存计算开始----------
*/
/**
* MemTotal 总内存
* MemFree 空闲内存
* MemAvailable 可用内存(MemFree + 可回收的内存),系统中有些内存虽然已被使用但是可以回收,比如cache、buffer、slab都有一部分可以回收
*/
//物理内存总量
$memTotal = shell_exec("cat /proc/meminfo | grep 'MemTotal' | awk '{print $2}'");
$memTotal = (int)trim($memTotal);
//操作系统可用内存总量(没有使用空闲内存)
$memFree = shell_exec("cat /proc/meminfo | grep 'MemAvailable' | awk '{print $2}'");
$memFree = (int)trim($memFree);
//操作系统已使用内存总量
$memUsed = $memTotal - $memFree;
//内存使用率
$percent = round($memUsed / $memTotal * 100, 1);
/**
* ----------内存计算结束----------
*/
$data['mem'] = $percent;
print_r($data);
}
for (;;) {
detect();
sleep(1);
}