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Windows 7: Why am I getting episodes of 100% CPU usage?

10 Aug 2018   #1
martinlest

Windows 7 Home Premium SP1 64-bit
 
 
Why am I getting episodes of 100% CPU usage?

I use my main PC to run X-Plane 11 only (flight simulator). It mostly runs well, but for the past several days, every 10-15 minutes the CPU cores all start running at 100% and the simulator all but freezes up.

I am at a loss to explain this... I can't think of what has changed that might account for it. I ran Process Monitor and made a copy of the entries of a one-minute duration, during which time there was one of these '100% CPU episodes'. I can't see anything there that does not occur at other times when the CPU usage is quite normal, but I wonder if anyone more knowledgeable than I am might have a look at the attached PML file (opens with Process Monitor) and indicate any entry which looks 'dodgy' and may possibly be causing the CPU to run at maximum capacity?

I also have Process Lasso, but I am not sure how to use it to troubleshoot this kind of problem (I noticed a post somewhere which suggested using it for this very purpose, but with no indication as to how)..

Many thanks for any input here.

Martin




Attached Files
File Type: zip Logfile.zip (5.88 MB, 2 views)
My System SpecsSystem Spec
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13 Aug 2018   #2
Megahertz07

Windows 7 HP 64
 
 

Try this:
- On services, set Windows Update to manual
- On WU page set to never check and unmark Recommended updates.
My System SpecsSystem Spec
13 Aug 2018   #3
martinlest

Windows 7 Home Premium SP1 64-bit
 
 

Thanks. I have seen in the interim though that it is X-Plane.exe that suddenly goes to 100%. No other processes seem to be involved.

May be a bit 'specialist' for here then? Unless anyone knows how to use Process Lasso or other tool do see exactly what that exe file is doing.
My System SpecsSystem Spec
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13 Aug 2018   #4
iko22

Windows 7 x64, Vista x64, 8.1 smartphone
 
 

Hi

As you now know that it is X-Plane.exe that suddenly goes to 100%, had you checked that the graphics > rendering options, within the simulator, have changed?

Some of the rendering options are to do with the graphics card, and these are listed on the left side of the menu; while the other rendering options are to do with the CPU, and these options are listed on the right side of the menu.

For example the option "draw parked aircraft" is listed on the right-hand side of the menu, and therefore its rendering is to do with the CPU.

Maybe if you reduce the rendering demands of some of the options listed on the right, then your CPU wont throttle to 100% when you use the simulator??

Hope that helps.
My System SpecsSystem Spec
13 Aug 2018   #5
F22 Simpilot

Windows 7 Ultimate x64
 
 

You can also try Process Explorer. If you right click the process and chose properties and chose threads you can hone in on what is utilizing the CPU.

Process Explorer - Windows Sysinternals | Microsoft Docs
My System SpecsSystem Spec
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 Why am I getting episodes of 100% CPU usage?




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