监视共享主机上的脚本性能

Question

I'm planning to run a PHP script periodically via cron on a shared hosting provider. Based on my localhost development, the script does not utilize too much of CPU. However, I would like to monitor the script runs/usage so as not to exert excess strain on the server and hence potentially result in an account limit.

What is the best way to monitor the memory and CPU usage of the script (with the additional feature of having the performance reports being e-mailed)? Since I'm on a shared host, I will not be able to install apps.

Thanks

Answer 1

You can write your script in the below way. Their is a default function in php to check the memory usage but in few servers running windows, if they are disabled, their is a work around as well. Analyze the below code and try to get the idea. Hope it helps.

function getMemUsage()
{

        if (function_exists('memory_get_usage'))
        {
            return memory_get_usage();
        }
        else if ( strpos( strtolower($_SERVER["OS"]), 'windows') !== false)
        {
            // Windows workaround
            $output = array();

            exec('tasklist /FI "PID eq ' . getmypid() . '" /FO LIST', $output);            
            return substr($output[5], strpos($output[5], ':') + 1);
        }
        else
        {
            return '<b style="color: red;">no value</b>';
        }
}

$message = getMemUsage();
$subject = "Memory USage";

mail("xxx@xxx.com",$message,$subject);