Linux top, linux
Linux top commands
Enter top in the terminal and the result is as follows:
1: first line, system status
19:12:02 ----> current system time
6 min -------> the system has been started for 6 minutes.
1 use -------> only one user
CPU of Linux system and performance monitoringPerformance optimization is the process of finding bottlenecks in system processing and removing them. This article was translated by sanotes.net webmaster Tonnyom in August 2009 from the Linux System
First, the Linux hardwareCPU (COMPUTE, logical judgment, logic Processing), memory (CPU processes data (memory fragments) in memory), IO (read and write operations to disk over time)Block zone cache between CPU and memory (level two cache)CPU High:
What does the CPU information in the Linux TOP Command mean?
CPU (s): 62.1% us, 15.9% Sy, 0.1% Ni, 19.4% ID, 2.0% wa, 0.1% hi, 0.4% Si
Mem: 8247956 k total, 8232004 K used, 15952 K free, 205240 K Buffers
Swap: 8191992 k total, 48 k used, 8191944 K
First, Top (Linux command)Execute the top command: (see the details of process 15477, used below) System Information (first five elements):
Line 1th: Top task Queue information (System run state and average load), same as uptime command
The top command is a performance analysis tool used in linux to display the resource usage of various processes in the system in real time. It is the same as the job manager in windows. The following describes how to use it:
[Root @ test etc] #
Explanation of top and load in CentOSThe top command is a common performance analysis tool in Linux. It can display the resource usage of various processes in the system in real time, similar to the Windows Task Manager. The following describes how
In Linux, you can view CPU and memory usage during system maintenance. you may need to view CPU usage at any time and analyze the system status based on the relevant information. In CentOS, you can use the top command to view CPU usage. After
In Linux, you can view CPU and memory usage during system maintenance. You may need to view CPU usage at any time and analyze the system status based on the relevant information. In CentOS, you can use the top command to view CPU usage. After the
I/O wait for Linux system monitoring and diagnosis tools
Directory
1. Problem:2. troubleshooting:2.1 vmstat2.2 iostat2.3 iotop3. The last words: a different path1. Problem:
Recently, log real-time synchronization was performed. Before the release,
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