Linux的top命令类似于windows的资源管理器，通过它，我们可以了解到服务器的cpu、Memory、Swap等信息。
top - 09:57:28 up 135 days,22:00,1 user,load average: 0.12,0.09,0.09 Tasks: 1427 total,1 running,1425 sleeping,0 stopped,1 zombie cpu(s): 0.2%us,0.3%sy,0.0%ni,99.4%id,0.0%wa,0.0%hi,0.0%si,0.0%st Mem: 264496008k total,115696664k used,148799344k free,842824k buffers Swap: 32767996k total,0k used,32767996k free,4913740k cached PID USER PR NI VIRT RES SHR S %cpu %MEM TIME+ COMMAND 17478 root RT 0 756m 88m 57m S 13.0 0.0 16659:05 osysmond.bin 10394 oracle 20 0 16096 2312 924 R 2.6 0.0 0:00.43 top 38570 grid -2 0 1306m 15m 12m S 2.0 0.0 3815:06 oracle
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解释 |
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top - 09:57:28 |
当前时间 |
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135 days |
系统已经运行了135天 |
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1user |
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load average: 0.12,0.09 |
系统负载（即任务队列的平均长度，三个值分别代表1min、5min、15min前到现在的平均值） |
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tasks:1427 total |
总进程数 |
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1 running,1 zombie |
1个在运行，1425个处于睡眠，0个停止，1个冻结 |
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cpu(s) 0.2%us |
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0.3%sy |
系统内核占用0.3% |
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0.0%ni |
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99.4%id |
空闲百分比为99.4% |
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0.0%wa |
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… |
… |
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Mem: 264496008k total |
内存总量大小 |
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115696664k used |
已使用内存 |
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148799344k free |
空闲内存 |
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842824k buffers |
用作内核缓存的内存 |
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Swap: 32767996k total |
交换区总量 |
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0k used |
使用的交换区总量 |
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32767996k free |
空闲交换区 |
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4913740k cached |
缓冲的交换区总量 |
