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The short answer is "it depends".
The medium answer is:
WHen you pull stats every 5 min, you are getting the stats at that moment. Those stats are then averaged when we do summarization (minute-ly stats to hourly every week, hourly to daily every month, etc)
However, in each specific case, you need to have a sense of what stats we're pulling. Ping is ping at that moment. CPU is the 15-min average (unless you change it), so you're getting the system's averaging of 15 min CPU stats, which is captured as the CPU stat for that point-in-time.
Thanks for the Reply Leon.
Just to be sure I'm understanding this correctly, if the poll takes 2 seconds and captures the system performance during that time, and if the poll interval is 5 minutes, it has no idea on the specifics of the previous 298 seconds correct?
So if the CPU is 100% for 298 seconds, and then idles at 5% for the final 2 seconds the poll happen (I know this is an extreme example, but just bare with me:)), SW only see the 5% CPU utilization and has no idea that the system was pegged for 298 seconds before that?
I do see your point of the 15 minutes average, but technically SW us only aware of those short seconds in 3 different polls throughout that 15 minutes.