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CPU Utilization
When running a simple top command, you notice that while running nothing else, the User role may consume 7% of the droplet. Idle fluctuates between 92%-88%. However, when looking at the DigitalOcean dashboard I noticed that during those same instances, the droplet’s ‘CPU Usage’ statistic barely reached 1%.
I’m curious about the 'CPU Usage’ stat in general. If an idle reading is 0% while the DigitalOcean 'CPU Usage’ stat shows maybe 1%- does that mean that 100% of the CPU was dedicated to a task at that moment, but during that moment the CPU itself was only taxed at 1% of its total capability??
Trying to wrap my head around monitoring and system health. Thank you!!
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The above may be an extreme example but for instance, I have a script that creates a connection from a remote server, then runs a top command every 1 second to get second by second CPU stats. I noticed idle percentage is usually around 87-92-100% when captured on a per-second basis. However, the CPU % in DigitalOcean shows roughly 2% during this same period.
Just curious about the disconnect. Is idle % a good characteristic to measure performance?
** In Addition- I noticed running the Top command from the droplet itself displays different results than my script that uses SSH to run the top command from a remote connection. Maybe that is not an accurate depiction of current server status