Linux查看CPU和内存使用情况（Linux looks at CPU and memory usage）.docVIP

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Linux查看CPU和内存使用情况（Linux looks at CPU and memory usage）.doc

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Linux查看CPU和内存使用情况（Linux looks at CPU and memory usage）

Linux查看CPU和内存使用情况（Linux looks at CPU and memory usage） In the process of system maintenance, you may need to view CPU utilization at any time, and analyze the needs of the system according to the relevant information. In CentOS, you can view CPU usage by the top command. After running the top command, the CPU usage will be displayed in full screen, and will be in the mode of the conversation -- with top command, you can control the display mode, and so on. The command to quit top is q (knock q on the top run). Operation instance: Enter top on the command line You can start top The full screen dialogue mode of top can be divided into three parts: the system information bar, the command input bar, and the process list bar. Part I - the top system information bar: Line 1 (top) : 00:11:04 is the current moment of the system; 3:35 is the operation time after the system is started; 2 users for the current user login to the system, more precisely, login to the user terminal for more than one user at the same time on the system terminal connection will be deemed to be multiple users connected to the system, the users will also be shown as the number of the terminal; Load average for the average of the current system load, the back of the three values respectively for 1 minute, 5 minutes ago, 15 minutes before the process of the average of the general can be thought of as the numerical more than when the CPU number, the CPU will be demanding load current system contains process; Second line (Tasks) : 59 total is the total number of current system processes; 1 running is the number of processes in the current operation; 58 sleeping is the number of processes currently in the waiting state; 0 stoped is the number of system processes that are stopped; 0 zombie is the number of processes that are recovered; Line 3 (Cpus) : The current utilization rate of CPU is respectively indicated. Line 4 (Mem) : The total amount of memory, current usage, idle memory and the amount of memory