XK0-005 · Question #1324
XK0-005 Question #1324: Real Exam Question with Answer & Explanation
The correct answer is D: High disk activity. iostat shows high disk write rate to sda sar shows high iowait percentages (higher than user percentages) free shows most RAM is used for buffers/cache which indicates high utilisation as data is read from or written to disk.
Question
A systems administrator is investigating low performance a server. After executing some diagnostic commands, the administrator analyzes the data: Which of the following is the cause of low performance on the server?
Options
- ALack of swap space
- BLack of available memory
- CUser processes have taken up all the available CPU time
- DHigh disk activity
Explanation
iostat shows high disk write rate to sda sar shows high iowait percentages (higher than user percentages) free shows most RAM is used for buffers/cache which indicates high utilisation as data is read from or written to disk.
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