librenms-librenms/includes/polling/applications/memcached.inc.php

<?php

$name = 'memcached';
$app_id = $app['app_id'];
if (!empty($agent_data['app']['memcached'])) {
    $data = $agent_data['app']['memcached'][$app['app_instance']];
} else {
    $oid     = '.1.3.6.1.4.1.8072.1.3.2.3.1.2.9.109.101.109.99.97.99.104.101.100';
    $result  = snmp_get($device, $oid, '-Oqv');
    $result  = unserialize(str_replace("<<<app-memcached>>>\n", '', $result));
    $data    = reset($result);
}

echo ' memcached('.$app['app_instance'].')';

$rrd_name = array('app', $name, $app_id);
$rrd_def = array(
    'DS:uptime:GAUGE:600:0:125000000000',
    'DS:threads:GAUGE:600:0:125000000000',
    'DS:rusage_user_ms:DERIVE:600:0:125000000000',
    'DS:rusage_system_ms:DERIVE:600:0:125000000000',
    'DS:curr_items:GAUGE:600:0:125000000000',
    'DS:total_items:DERIVE:600:0:125000000000',
    'DS:limit_maxbytes:GAUGE:600:0:125000000000',
    'DS:curr_connections:GAUGE:600:0:125000000000',
    'DS:total_connections:DERIVE:600:0:125000000000',
    'DS:conn_structures:GAUGE:600:0:125000000000',
    'DS:bytes:GAUGE:600:0:125000000000',
    'DS:cmd_get:DERIVE:600:0:125000000000',
    'DS:cmd_set:DERIVE:600:0:125000000000',
    'DS:get_hits:DERIVE:600:0:125000000000',
    'DS:get_misses:DERIVE:600:0:125000000000',
    'DS:evictions:DERIVE:600:0:125000000000',
    'DS:bytes_read:DERIVE:600:0:125000000000',
    'DS:bytes_written:DERIVE:600:0:125000000000'
);

$fields = array(
    'uptime'            => $data['uptime'],
    'threads'           => $data['threads'],
    'rusage_user_ms'    => $data['rusage_user_microseconds'],
    'rusage_system_ms'  => $data['rusage_system_microseconds'],
    'curr_items'        => $data['curr_items'],
    'total_items'       => $data['total_items'],
    'limit_maxbytes'    => $data['limit_maxbytes'],
    'curr_connections'  => $data['curr_connections'],
    'total_connections' => $data['total_connections'],
    'conn_structures'   => $data['connection_structures'],
    'bytes'             => $data['bytes'],
    'cmd_get'           => $data['cmd_get'],
    'cmd_set'           => $data['cmd_set'],
    'get_hits'          => $data['get_hits'],
    'get_misses'        => $data['get_misses'],
    'evictions'         => $data['evictions'],
    'bytes_read'        => $data['bytes_read'],
    'bytes_written'     => $data['bytes_written'],
);

$tags = compact('name', 'app_id', 'rrd_name', 'rrd_def');
data_update($device, 'app', $tags, $fields);