IMF 检查虚拟机swap内存，清理及spark程序重新调整
root@master:/usr/local/kafka_monitor# free -m total used free shared buffers cached Mem: 2995 2914 81 1 3 182 -/+ buffers/cache: 2728 267 Swap: 2047 2045 2 root@master:/usr/local/kafka_monitor# top - 16:15:48 up 8:21, 6 users, load average: 6.13, 12.94, 13.96 Tasks: 506 total, 3 running, 503 sleeping, 0 stopped, 0 zombie %Cpu(s): 10.8 us, 2.2 sy, 0.0 ni, 10.1 id, 76.8 wa, 0.0 hi, 0.2 si, 0.0 st KiB Mem: 3067668 total, 2924292 used, 143376 free, 5596 buffers KiB Swap: 2097148 total, 2081288 used, 15860 free. 68356 cached Mem
master 虚拟机运行的程序负载过重，导致master虚拟机内存耗用响应慢，重新调整：
