In the standard `uptime` output, what are the three numbers reported at the end of the line?
LPIC-1 Exam 101-500, objective 103. GNU and Unix commands medium
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The options
Not correct Free memory in total, used and cached form
Wrong. That breakdown is what `free` prints. uptime says nothing about memory.
Not correct CPU usage percentages for user, system and idle time
Wrong. Those percentages come from top or vmstat. Load average is a queue length, not a percentage, and is not capped at 100.
Correct Load averages over the last 1, 5 and 15 minutes
Correct. They are the average number of runnable and uninterruptible tasks over those three windows, which is why they can exceed 1 on a busy machine.
Not correct Load averages over the last 1, 10 and 60 minutes
Wrong intervals. The windows are 1, 5 and 15 minutes — the same three shown on the first line of top.
Why
uptime prints the current time, how long the system has been up, the number of logged-in users, and the 1/5/15-minute load averages. Comparing the three numbers tells you the trend: a 1-minute value far above the 15-minute value means load is climbing right now.
Where this comes from
- Cited
- LPI exam objective 103.5
- What it says
- Use uptime to observe system load.
Practise this
Reading one question is not practice. The trainer will draw a short set from objective 103 and space the ones you get wrong.
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