CPU usage difference

Freubel

Freubel

Getting the hang of it
Apr 20, 2018
83
48
Volendam
Good morning everyone !
It's not a problem what i'm experiencing but it has triggered my curiousity.
I just did a fresh install of windows, BI and deepstack because i switched out my "older" CPU for a less "older" CPU to see if i can get the workload down.
Because i am watching that closely i noticed something, how come the BI CPU usage is way off from the taskmanager CPU usage ?
Like i said, it's not a problem, i'm just curious.

 
perhaps BI and Task manager take values from different counters to generate their stats. There are quite a few processor related counters to pull data from. If you poke around in perfmon you can see the choice. Perhaps one is displaying "realtime" datapoints and one is aggregated over a longer time... :idk:

if its not causing issues, personally i wouldnt burn my time trying to figure it out. But i know how it is when something catches your curiosity ;)
 
IAmATeaf said:
Your image for me is so blurred that I can’t make anything out?
Click to expand...
Appology, i thould imgur would make it clicable, appearantly not the way i thought it would be.
So basicly the taskamanager shows CPU usage at 5% and BI shows it at 16%. I'm just wondering where the difference comes from.

ws0U66Nl.png
 
Sphinxicus said:
perhaps BI and Task manager take values from different counters to generate their stats. There are quite a few processor related counters to pull data from. If you poke around in perfmon you can see the choice. Perhaps one is displaying "realtime" datapoints and one is aggregated over a longer time... :idk:

if its not causing issues, personally i wouldnt burn my time trying to figure it out. But i know how it is when something catches your curiosity ;)
Click to expand...
What the eyes have seen can't be unseen hahahaha. It is not a problem, just curiousity. About the datapoints over time does make sense, taskmanager is indeed real time. On the other hand, BI does move up and down a lot, kinda makes you wonder if that's also realtime. That's the downside from having not much to do on your days off work, you start noticing stuff like this.
 
Even task manager does not agree with itself if you compare what it says in Details tab compared to Processes or Performance tabs.

Also if your CPU frequency is running at 1.02 GHz like Task Manager says, then it is throttled down because of the light load. Often in such a case, the CPU frequency will jump up and down a lot, and this makes CPU usage percent really hard to measure. That could explain why the numbers are so far apart. If you went to Windows power settings and set the minimum frequency to 100% then you would probably get more consistent usage measurements, but higher power consumption.
 
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