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?

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?

Exhibit

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.

How the community answered

(53 responses)

A
79% (42)
B
6% (3)
C
2% (1)
D
13% (7)

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 troubleshooting#I/O wait#System monitoring#Performance bottlenecks

Community Discussion

No community discussion yet for this question.

Full XK0-005 Practice