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…

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.

Troubleshooting

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

How the community answered

(20 responses)

A
20% (4)
B
5% (1)
C
10% (2)
D
65% (13)

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.

Topics

#Server Performance#Troubleshooting#Resource Monitoring#Disk Activity

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