IMF 检查虚拟机swap内存，清理及spark程序重新调整

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：