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You may use the following commands for checking CPU/Memory utilization.

Displaying top CPU_consuming processes:
  #ps aux | head -1; ps aux | sort -rn +2 | head -10

Displaying top 10 memory-consuming processes:
  #ps aux | head -1; ps aux | sort -rn +3 | head

Displaying process in order of being penalized:
  #ps -eakl | head -1; ps -eakl | sort -rn +5

Displaying process in order of priority:
  #ps -eakl | sort -n +6 | head

Displaying process in order of nice value
  #ps -eakl | sort -n +7

Displaying the process in order of time
  #ps vx | head -1;ps vx | grep -v PID | sort -rn +3 | head -10

Displaying the process in order of real memory use
  #ps vx | head -1; ps vx | grep -v PID | sort -rn +6 | head -10

Displaying the process in order of I/O
  #ps vx | head -1; ps vx | grep -v PID | sort -rn +4 | head -10

Displaying WLM classes
  #ps -a -o pid, user, class, pcpu, pmem, args

Determinimg process ID of wait processes:
  #ps vg | head -1; ps vg | grep -w wait

Wait process bound to CPU
  #ps -mo THREAD -p <PID>

Cpu usage with priority levels
  #topas -P
  
  
Source link [[https://www.ibm.com/developerworks/community/forums/html/topic?id=dc4b4559-23c4-4974-96e7-181da97e24e4]]

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