华为AR2204-s CPU占用率总是100%，求解~！

Question

华为AR2204-s CPU占用率总是100%，经过查询日志文件发现以下警告：
The CPU is overloaded, and the tasks with top three CPU occupancy are sdcardqueue(92.1%), port_statistics(1.8%), PTS-DATA(0.9%) . (CpuUsage=100%, Threshold=80%)

一直不清楚问题出在哪里，求解！