基于cron的计划任务时间管理的设计与实现

Design and Implementation of Time Management of Scheduled Tasks Based on Cron

为了实现通信系统中大量的计划任务的时间管理的目的,在分析了Linux&Unix系统下的crontab的基础上,通过对crontab文件的优化,将计划任务以时间分类的方法。将执行时间相同的计划任务做成schedule形式,实现了对系统中大量同时刻或时段的计划任务进行统一的管理,改善了crontab文件的冗余问题,减少了cron服务重启次数;减轻了系统的开销。

In order to achieve the time management of a large number of the scheduled tasks in communication systems, on the basis of analysis of crontab in the Linux ＆ Unix systems, the scheduled tasks with same actuation period are converted to schedule form by optimizing the crontab file and performing the time classification for the scheduled tasks, so as to achieve the unified management of a lot of scheduled tasks appearing in the same time or period. The redundancy in crontab file and the restart of the cron service were reduced by the management.