摘要
中国民航订座和离港系统使用的应用系统为USAS,传统的USAS主机对外异步报文传递都是存储在PDQ中,需要多个指令才能完成报文传输。随着旅客量的增加和主机系统开放化工作的进展,需要同步的报文越来越多,不仅消耗主机CPU资源,而且对主机的安全运行也存在一定的影响。因此提出了利用消耗较低的批处理作业处理实时性要求相对较低的PDQ异步报文,这是USAS领域内第一个以后台作业处理PDQ的模式。结果表明,该方法处理单个报文的执行时间下降50%,资源消耗下降70%,为主机数据开放化提供了一个高准确、低消耗、易操控的底层系统平台。
The application system used by the reservation and departure system of civil aviation of China is USAS.The traditional asynchronous message transmission of USAS is stored in PDQ,and multiple instructions are required to complete the message trans-mission.With the increase of the number of passengers and the progress of the opening of the mainframe system,more and more mes-sages need to be synchronized,which not only consumes the CPU resources of mainframe,but also has a certain impact on the safe operation.Therefore,it is proposed to use low consumption batch jobs to process PDQ asynchronous messages with relatively low re-altime requirements,which is the first mode of background jobs processing PDQ in the field of USAS.The results show that the exe-cution time of processing a single message is reduced by 50%and the resource consumption is reduced by 70%.This method pro-vides a low-level system platform with high accuracy,low consumption and easy manipulation for the openness of mainframe data.
作者
王宗强
张劲
何宁
王强
刘昂
WANG Zong-qiang;ZHANG Jin;HE Ning;WANG Qiang;LIU Ang(TravelSky Technology Limited,Beijing 101318)
出处
《电脑与电信》
2022年第9期78-80,共3页
Computer & Telecommunication
关键词
异步报文
大型主机
软件工程
民航
asynchronous message
mainframe
software engineering
civil aviation
