How to get CPU usage and RAM usage without exec?
How does VBulletin get the system information without the use of exec
? Is t开发者_如何学Pythonhere any other information I can get about the server without exec? I am interested in:
- bandwidth used
- system type
- CPU speed/usage/count
- RAM usage
Use PHPSysInfo library
phpSysInfo is a open source PHP script that displays information about the host being accessed. It will displays things like:
- Uptime
- CPU
- Memory
- SCSI, IDE, PCI
- Ethernet
- Floppy
- Video Information
It directly parsed parses /proc
and does not use exec
.
Another way is to use Linfo. It is a very fast cross-platform php 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.
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 should work on every distro, but if it doesn't, try messing with $get_cores + 1
offset.
CPU in percent of cores used (5 min avg):
$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):
$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):
$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_mem
array if you need to calc other facets:
[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:
$exec_uptime = preg_split("/[\s]+/", trim(shell_exec('uptime')));
$uptime = $exec_uptime[2] . ' Days';
<?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());
This is what I use for instant CPU usage without 1 second delay
$cpu = shell_exec('top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk \'{print 100 - $1}\'');
after searching on forums and trying many methods, best accurate is this:
$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);
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