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1Z0-460 · Question #69

Examinethe sar command below.Your Oracle Linux systemhas one CPU. What does the runq-sz columnof this output conveyabout your system?

The correct answer is A. CPU is bottleneck because the run queue size is greater than the number of CPUs on your. Use the sar -q command to report the following information: The Average queue length while the queue is occupied. The percentage of time that the queue is occupied. The following list describes the output from the -q option. The number of kernel threads in memory that are…

Troubleshooting

Question

Examinethe sar command below.Your Oracle Linux systemhas one CPU. What does the runq-sz columnof this output conveyabout your system?

Exhibit

1Z0-460 question #69 exhibit

Options

  • ACPU is bottleneck because the run queue size is greater than the number of CPUs on your
  • BThe average of three processes are only using the CPU on your system and hence the CPU is
  • CCPU is not a bottleneck because the run queue size indicates the number of CPU bound
  • DCPU is a bottleneck because the run queue size indicates that adequate memory is not allocated.

How the community answered

(47 responses)
  • A
    81% (38)
  • B
    11% (5)
  • C
    6% (3)
  • D
    2% (1)

Explanation

*Use the sar -q command to report the following information: The Average queue length while the queue is occupied. The percentage of time that the queue is occupied. *The following list describes the output from the -q option. The number of kernel threads in memory that are waiting for a CPU to run. Typically, this value should be less than 2. Consistently higher values mean that the system might be CPU-bound. The percentage of time that the dispatch queues are occupied. Swap queue of processes for the sar command. Swap queue of processes for the sar command.

Topics

#sar#run queue#CPU performance#system bottleneck

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