code: public static <T extends JobBean> SchedulingMetaInfo newIntervalSchedulingMetaInfo(Class<T> jobClass, 
  			String jobName, String jobGroup, String triggerGroup, long interval, int repeatCount) {
  
  		return newIntervalSchedulingMetaInfo(jobClass, jobName, jobGroup, triggerGroup, interval, repeatCount, 40 * 1000);
  	
  	}
docs: 默认延迟40s开始执行。