Which of the following performance information is considered the most important information provided by the vmstat command?
A) it reports total memory on the system
B) it reports buffer activity
C) it reports disk I/O
D) it reports memory swapping

Question

Quizplus · Accepted Answer

The most important performance information provided by the vmstat command is memory swapping. This indicates whether the system is low on memory and needs to swap data to disk, which can severely impact performance. The other options (total memory, buffer activity, and disk I/O) are also important, but not as critical as memory swapping.

Which of the Following Performance Information Is Considered the Most