public function getUsage()
{
if (!function_exists('memcache_get_extended_stats')) {
return false;
}
if ($this->usage === null) {
$servers = DebugBar::getConfig('memcached');
$server = array_shift($servers);
$memcache = memcache_connect($server['host'], $server['port']);
if ($memcache === false) {
return false;
}
foreach ($servers as $server) {
memcache_add_server($memcache, $server['host'], $server['port']);
}
$stats = memcache_get_extended_stats($memcache);
$memory_used = 0;
$memory_total = 0;
foreach ($stats as $host => $usage) {
$memory_used += $usage['bytes'];
$memory_total += $usage['limit_maxbytes'];
$this->usage[$host] = array('Version' => $usage['version'], 'Uptime' => $this->formatSeconds($usage['uptime']), 'Total memory' => $this->formatBytes($usage['limit_maxbytes']), 'Used memory' => $this->formatBytes($usage['bytes']), 'Available memory' => $this->formatBytes($usage['limit_maxbytes'] - $usage['bytes']), 'Threads / second' => $this->formatNum($usage['total_connections'] / $usage['uptime']), 'Current threads' => $usage['curr_connections'], 'Queries / second' => $this->formatNum($usage['cmd_get'] / $usage['uptime']), 'Hits' => $usage['get_hits'] . ' (' . $this->formatNum($usage['get_hits'] * 100 / $usage['cmd_get']) . '%)', 'Misses' => $usage['get_misses'] . ' (' . $this->formatNum($usage['get_misses'] * 100 / $usage['cmd_get']) . '%)', 'Inserts' => $usage['cmd_set'], 'Deletes' => $usage['delete_hits'], 'Items' => $usage['curr_items']);
}
$this->percent_used = $this->formatNum($memory_used * 100 / $memory_total);
}
return $this->usage;
}
