limit.php

<?php

$procList = array();
$newProcList = array();
$limitProcs = array();

while (true) {
	$count = 0;
        $newProcList = getProc();
        foreach ($newProcList as $pid) {
                if (!in_array($pid, $procList)) {
                        $limitProcs[$pid] = limitProc($pid);
                        $procList[] = $pid;
                        $count++;
                }
        }
	echo "Added $count \\ ";

        $count = 0;
        foreach ($procList as $k => $pid) {
                if (!in_array($pid, $newProcList)) {
                        unlimitProc($limitProcs[$pid]);
                        unset($limitProcs[$pid]);
                        unset($procList[$k]);
                        $count++;
                }
        }
	echo "dropped $count processes. ";

        echo "Waiting...";
        sleep(3);
        echo "\n";
}


foreach (getProc() as $pid) { echo limitProc($pid) . "\n"; }

function getProc() {
        $cmd = "echo $(ps acx | grep java | awk '{ print $1 }')";
        $proc = explode(" ", shell_exec($cmd));
        foreach ($proc as $k => $v) $proc[$k] = intval($v);

        return $proc;
}


function limitProc($pid) {
        $limit = 75;
        $limit_pid = intval(shell_exec("cpulimit -p $pid -l $limit &> /dev/null & echo $!"));
        return $limit_pid;
}

function unlimitProc($pid) {
        shell_exec("kill -9 $pid > /dev/null 2>&1");
}