public function testBenchmark()
    {
        $time = microtime(TRUE);

        $container = $this->createContainer('sharding');
        foreach ($container->getByType('Kdyby\Redis\ClientsPool') as $client) {
            $this->getClient($client); // flushdb
        }

        $containerFile = Nette\Reflection\ClassType::from($container)->getFileName();
        $containerClass = get_class($container);

        $statsFile = TEMP_DIR . '/stats.log';

        $this->threadStress(function () use ($containerFile, $containerClass, $statsFile) {
            require_once $containerFile;
            /** @var Nette\DI\Container|\SystemContainer $container */
            $container = new $containerClass();
            $container->initialize();
            Nette\Diagnostics\Debugger::enable(TRUE, TEMP_DIR);

            $cache = new \Nette\Caching\Cache($container->getByType('Kdyby\Redis\StorageRouter'));
            $stats = array('miss' => 0);

            // randomly read every 1000th key
            for ($i = 1; $i <= 10000; $i += 10) {
                $key = rand($i, $i + 10);
                $cache->load($key, function (&$dp) use ($key, $cache, &$stats) {
                    $stats['miss'] += 1;
                    $dp[$cache::TAGS] = array_unique(array(md5($key % 10000), md5($key % 1000), md5($key % 100), md5($key % 10)));
                    return array_fill(0, 30, range('a', 'z'));
                });
            }

            /** @var \Kdyby\Redis\Diagnostics\Panel $panel */
            $panel = $container->getByType('Kdyby\Redis\Diagnostics\Panel');
            $stats['queries'] = $panel->getQueryCount();
            $stats['time'] = sprintf('%0.1f', $panel->getTotalTime()) . ' ms';
            file_put_contents($statsFile, json_encode($stats) . "\n", FILE_APPEND);

        }, 200, 5);

        var_dump(microtime(TRUE) - $time);
    }