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XK0-005 · Question #759
XK0-005 Question #759: Real Exam Question with Answer & Explanation
The correct answer is A: The CPU is mostly waiting for I/O operations.. The high %iowait value (50.38%) in the iostat output suggests that the CPU is waiting for I/O operations to complete, often caused by storage bottlenecks rather than a lack of CPU or memory resources.
Troubleshooting
Question
Users are reporting that a Linux server is responding slowly. A systems administrator troubleshooting the server issue sees the following: Which of the following is most likely the issue?
Options
- AThe CPU is mostly waiting for I/O operations.
- B/ filesystem does not have enough storage allocated.
- C/var filesystem is almost full.
- DThe CPU capacity is inadequate.
Explanation
The high %iowait value (50.38%) in the iostat output suggests that the CPU is waiting for I/O operations to complete, often caused by storage bottlenecks rather than a lack of CPU or memory resources.
Topics
#Linux performance#I/O bottlenecks#Troubleshooting#System resource monitoring
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