线上问题排查方法
###1. top命令详解 输入top命令之后，会打印出如下信息 top - 11:50:26 up 167 days, 19:07, 2 users, load average: 0.00, 0.01, 0.05 Tasks: 100 total, 2 running, 98 sleeping, 0 stopped, 0 zombie %Cpu(s): 0.0 us, 0.3 sy, 0.0 ni, 99.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem: 1016656 total, 930924 used, 85732 free, 12816 buffers KiB Swap: 0 total, 0 used, 0 free. 50268 cached Mem PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 25 root 20 0 0 0 0 R 0.3 0.0 31:48.91 rcuos/0 14326 root 20 0 141092 33868 2336 S 0.3 3.....