How to find top 10 CPU and Memory processes from nmon command in AIX

UNIX AIX
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How to find top 10 CPU and Memory processes from nmon command in AIX

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To find the top 10 CPU and Memory processes using the nmon command in AIX, follow these steps:

  1. Start nmon:

    • Open your terminal and run the nmon command by typing:
      nmon
    • This will launch the nmon monitoring tool in interactive mode.

  2. Monitor CPU Usage:

    • Press the t key to view the top processes sorted by CPU usage.
    • To focus on the top 10 processes, you can observe the list directly as nmon typically displays the most resource-intensive processes at the top.

  3. Monitor Memory Usage:

    • Press the m key to view the memory usage of processes. Similar to CPU, nmon will sort the processes by memory usage, displaying the highest consumers first.
    • Again, you can visually note the top 10 memory-consuming processes.

  4. Save the Data for Later Analysis:

    • If you want to save this data for later analysis, you can start nmon in a logging mode by specifying an output file and running it as:

      nmon -f -s 5 -c 12
      • -f saves the output to a file.
      • -s 5 captures data every 5 seconds.
      • -c 12 captures 12 iterations of the data (i.e., for 1 minute).

    • The output will be saved in a .nmon file, which can be analyzed using tools like nmon_analyzer to extract specific data, such as top CPU and memory processes.

  5. Use topas:

    • Alternatively, you can use the topas command, which provides similar functionality to nmon. Run topas and press 1 to view the top CPU processes and 2 to view the top memory processes.

These steps should allow you to identify and monitor the top 10 CPU and memory-consuming processes on your AIX system using nmon.

ChatGPT Reference: How to find top 10 CPU and Memory processes from nmon command in AIX

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