....

src/main/java/cn/com/qmth/examcloud/commons/helpers/concurrency/simple/ConcurrentTask.java

@@ -130,14 +130,14 @@ public class ConcurrentTask<T> {
 						nullTimes++;
 						if (10 <= nullTimes) {
 							if (immortal) {
-								Util.sleep(10);
+								Util.sleep(2);
 								continue;
 							} else {
 								LOG.info("no element.worker exist.");
 								break;
 							}
 						} else {
-							Util.sleep(5);
+							Util.sleep(2);
 							continue;
 						}
 					} else {