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Windows 7: How can I detect what process is using a particular CPU core?

12 May 2016   #1
morph000

Windows 7 64 bit
 
 
How can I detect what process is using a particular CPU core?

I'm seeing significant core 3 usage, circa 70-90%, but overall cpu usage is only 13% , so not impacting on system performance.

Nonetheless, such activity (these days !) is a cause for concern, when it runs for 30 mins plus, so how can I tell what's using that core ?


My System SpecsSystem Spec
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14 May 2016   #2
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Hello morph mate some system specs would be handy and also the model of that Toshiba.
System Info - See Your System Specs

Now when you say core 3 is that i7 a quad core??
My System SpecsSystem Spec
14 May 2016   #3
Alejandro85

Windows 7 Ultimate x64
 
 

Why is that a cause of concern?
My System SpecsSystem Spec
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15 May 2016   #4
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Quote   Quote: Originally Posted by Alejandro85 View Post
Why is that a cause of concern?
Well I am justguessing that it might be concern over one of the cores on that chip which I wanted to know what the CPU is but I can see what you mean
My System SpecsSystem Spec
16 May 2016   #5
morph000

Windows 7 64 bit
 
 

It's a Toshiba P870 Intel i7 quad core with Win 7 Home Premium & 16GB RAM.

Over the past few days I seem to have found the problem by fixing another.

Windows updates were stuck at 0% (a very common problem it seems...) and subsequent playing with the SystemDistribution folder has fixed it (but I didn't delete the contents as per typical web recommendation as that destroys the update history and deselected updates)
I'd say Windows update was TRYING to get updates but due to failed previous attempts it was pulling some core 3 time as it was 'stuck in a bind' of some sort. Windows bug !
Core 3 is now back to normal !


My concern stemmed from such prolonged core activity being very unusual on my system.
CPU normally sits at 3-4% even with all the stuff I run.
I was thinking 'nasty infection happening' but as usual it wasn't !


So thanks anyway to all.
My System SpecsSystem Spec
16 May 2016   #6
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

No probs but I would still keep half an eye on the core all the same.



Just in case you are interested this might be of use to you it is my bible when setting up or fixing machines and if you don't mind losing some of the "bling" like transparency well worth following some of the tips .

Optimize Windows 7
My System SpecsSystem Spec
17 May 2016   #7
morph000

Windows 7 64 bit
 
 

Thanks for the link.

I've already done a fair few of them already and in some cases done the exact opposite


Cores are running at their usual low level now so I'm happy.
My System SpecsSystem Spec
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 How can I detect what process is using a particular CPU core?




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