. * * @package LibreNMS * @link http://librenms.org * @copyright 2017 Neil Lathwood * @author Neil Lathwood */ $usage = snmp_get($device, "hh3cEntityExtMemUsage.{$mempool['mempool_index']}", '-Ovq', 'HH3C-ENTITY-EXT-MIB'); $mempool['total'] = 100; $mempool['used'] = $usage; $mempool['free'] = ($mempool['total'] - $mempool['used']);