php 如何在没有 exec 的情况下获取 CPU 使用率和 RAM 使用率？

How to get CPU usage and RAM usage without exec?

提问by Rami Dabain

How does VBulletin get the system information without the use of exec? Is there any other information I can get about the server without exec? I am interested in:

VBulletin 如何在不使用 的情况下获取系统信息exec？在没有 exec 的情况下，我还能获得有关服务器的任何其他信息吗？我对感兴趣：

• bandwidth used
• system type
• CPU speed/usage/count
• RAM usage

• 使用的带宽
• 系统类型
• CPU 速度/使用率/计数
• 内存使用

回答by shamittomar

Use PHPSysInfolibrary

使用PHPSysInfo库

phpSysInfo is a open source PHP script that displays information about the host being accessed. It will displays things like:

phpSysInfo 是一个开源 PHP 脚本，用于显示有关正在访问的主机的信息。它将显示如下内容：

• Uptime
• CPU
• Memory
• SCSI, IDE, PCI
• Ethernet
• Floppy
• Video Information

• 正常运行时间
• 中央处理器
• 记忆
• SCSI、IDE、PCI
• 以太网
• 软盘
• 视频信息

It directly parsed parses /procand does not use exec.

它直接解析 parses/proc并且不使用exec.

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Another way is to use Linfo. It is a very fast cross-platformphp script that describes the host server in extreme detail, giving information such as ram usage, disk space, raid arrays, hardware, network cards, kernel, os, samba/cups/truecrypt status, temps, disks, and much more.

另一种方法是使用Linfo。这是一个非常快速的跨平台php 脚本，它极其详细地描述了主机服务器，提供了诸如 ram 使用情况、磁盘空间、raid 阵列、硬件、网卡、内核、操作系统、samba/cups/truecrypt 状态、临时文件等信息，磁盘等等。

回答by dhaupin

This is what I use on Linux servers. It still uses exec, but other questions point here as duplicate, and there is no [good] suggestion for those. It shouldwork on every distro, but if it doesn't, try messing with $get_cores + 1offset.

这是我在 Linux 服务器上使用的。它仍然使用exec，但其他问题在这里指出重复，并且没有[好的]建议。它应该适用于每个发行版，但如果没有，请尝试使用$get_cores + 1偏移量。

CPU in percent of cores used (5 min avg):

CPU 使用的内核百分比（平均 5 分钟）：

$exec_loads = sys_getloadavg();
$exec_cores = trim(shell_exec("grep -P '^processor' /proc/cpuinfo|wc -l"));
$cpu = round($exec_loads[1]/($exec_cores + 1)*100, 0) . '%';

RAM in percent of total used (realtime):

RAM 占总使用量的百分比（实时）：

$exec_free = explode("\n", trim(shell_exec('free')));
$get_mem = preg_split("/[\s]+/", $exec_free[1]);
$mem = round($get_mem[2]/$get_mem[1]*100, 0) . '%';

RAM in GB used (realtime):

已使用的 GB 内存（实时）：

$exec_free = explode("\n", trim(shell_exec('free')));
$get_mem = preg_split("/[\s]+/", $exec_free[1]);
$mem = number_format(round($get_mem[2]/1024/1024, 2), 2) . '/' . number_format(round($get_mem[1]/1024/1024, 2), 2);

Here is what's in the $get_memarray if you need to calc other facets:

$get_mem如果您需要计算其他方面，这是数组中的内容：

[0]=>row_title [1]=>mem_total [2]=>mem_used [3]=>mem_free [4]=>mem_shared [5]=>mem_buffers [6]=>mem_cached

Bonus, here is how to get the uptime:

奖励，这是获得正常运行时间的方法：

$exec_uptime = preg_split("/[\s]+/", trim(shell_exec('uptime')));
$uptime = $exec_uptime[2] . ' Days';

回答by Stergios Zg.

<?php
function get_server_load() 
{
    $load=array();
    if (stristr(PHP_OS, 'win')) 
    {
        $wmi = new COM("Winmgmts://");
        $server = $wmi->execquery("SELECT LoadPercentage FROM Win32_Processor");  
        $cpu_num = 0;
        $load_total = 0;
        foreach($server as $cpu)
        {
            $cpu_num++;
            $load_total += $cpu->loadpercentage;
        }

        $load[]= round($load_total/$cpu_num);

    } 
    else
    {
        $load = sys_getloadavg();
    }
    return $load;
}
echo implode(' ',get_server_load());

回答by Saud Iqbal

This is what I use for instant CPU usage without 1 second delay

这是我在没有 1 秒延迟的情况下用于即时 CPU 使用的内容

$cpu = shell_exec('top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*//" | awk \'{print 100 - }\'');

回答by Vishnu T Asok

after searching on forums and trying many methods, best accurate is this:

在论坛上搜索并尝试了多种方法后，最准确的是：

$stat1 = file('/proc/stat'); 
sleep(1); 
$stat2 = file('/proc/stat'); 
$info1 = explode(" ", preg_replace("!cpu +!", "", $stat1[0])); 
$info2 = explode(" ", preg_replace("!cpu +!", "", $stat2[0])); 
$dif = array(); 
$dif['user'] = $info2[0] - $info1[0]; 
$dif['nice'] = $info2[1] - $info1[1]; 
$dif['sys'] = $info2[2] - $info1[2]; 
$dif['idle'] = $info2[3] - $info1[3]; 
$total = array_sum($dif); 
$cpu = array(); 
foreach($dif as $x=>$y) $cpu[$x] = round($y / $total * 100, 1);
print_r($cpu);