fix memory leak

helper/queue/iqueue.php

@@ -220,11 +220,8 @@ abstract class ILooper
             try
             {
                 if ($this->_stop) break;
-//                perfor_clear();
-                $perlog = perfor_log();
-                Log::record("perlog = {$perlog}" ,Log::DEBUG);
-
 
+                perfor_clear();
                 if(defined('USE_COROUTINE') && USE_COROUTINE)
                 {
                     $res = \Swoole\Coroutine::stats();