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General Category => Process Lasso => Topic started by: bertie97 on October 29, 2022, 01:47:17 PM

Title: Odd CPU % readings
Post by: bertie97 on October 29, 2022, 01:47:17 PM
Pl 11.2.0.5 beta x64 W10
As you can see from the screen shot, the activity level bars for the cores are low (the highest CPU thread/proc use shown in the CPU Use % column being <3% on <10 top usage procs).
....But the task bar icon is <100% as is the flag obscuring the CPU core bars.

The task bar icon does alter it's fill level to >0% but I cannot see why it is going over 100% at times...
Bug or am I just lucky?

Anyway thanks JC for the great job you do on PL & PC, couldn't live without them ;)
Title: Re: Odd CPU % readings
Post by: Jeremy Collake on October 31, 2022, 09:58:37 AM
The difference is in CPU Utility % vs CPU Time %. These are different metrics for CPU use. CPU Utility % takes into account frequency scaling, so will tend to be larger than CPU Time %, and can exceed 100%.

This beta series prefers CPU Utility % (configurable), but in that build the CPU Time % was still used by the CPU core graphs.

In the most recent build, v12.0.0.13 BETA, the CPU core graphs also show CPU Utility %. So, they should match up now.

It is still undecided if we'll cap all CPU Utility displays to 100%, to avoid user confusion. Task Manager does that. It is already capped on the historical graph and tray.

If you try the new build, let me know how it goes!
Title: Re: Odd CPU % readings
Post by: bertie97 on October 31, 2022, 10:47:55 AM
Thanks for the explanation JC ;)
I have just updated to v12.0.0.13 BETA & the synchronicity of the 2 outputs is much less disturbing  ;D
Feels more 'natural' in relation to what I see/is occurring.

I had had a situation with a driver installer trying to cook my SSD the other day & the only way to stop it was a reboot, so when I saw the suddenly longer-term fills on the taskbar display I thought there might be an issue but couldn't see anything to justify that.

Don't know about the % cap per se, it could be logical & useful to have >100% readings in some circumstances e.g. if the CPU were overclocked & the % max was tied to CPUID. 
Maybe % readings from Utility or Time could be a user option, assuming there are enough people who want that as a feature, (& who wouldn't bombard you with support tickets because they didn't know what they were messing with).  ;)
Anyway thanks again, I'll get back to playing around with this build.  :)


Title: Re: Odd CPU % readings
Post by: Jeremy Collake on October 31, 2022, 11:04:11 AM
Glad it's better now!

Quote from: bertie97 on October 31, 2022, 10:47:55 AMMaybe % readings from Utility or Time could be a user option

See new menu item 'View / Show CPU Utility % instead of Time %'. My expectation is that almost everyone will prefer CPU Utility %, so it is the default.

Thanks for the feedback! Please don't hesitate to report any other observations.
Title: Re: Odd CPU % readings
Post by: bertie97 on October 31, 2022, 05:29:42 PM
Thanks JC.
Looks like I should have studied the new PL build more thoroughly!

Will try the different modes  :)