Windows 10: CPU Affinity defaulting to only using 4/12 cores for all processes.

All processes start with an affinity that only uses the first 4 cores. Is this normal? Any ideas what to look into to find the cause if it is not? I'm using an i9 and an asus motherboard if that helps...



Please don't tell me I can set it myself with task manager... that is a garbage workaround and is blocked on some processes.

submitted by /u/vttbg
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:)

 

How to set 8 core cpu in affinity settings

Here is how to set your affinity settings using 8 core cpu splitting them into two 4 cpu cores

cmd.exe /c start "WoWSLauncher" /affinity F "C:\Games\World_of_Warships\WoWSLauncher.exe"

As you can see I added "F" next to /affinity that will let you use just 4 cores 0,1,2,3

I can do it easy in task manager but got to keep doing it everytime i want to play the game.

So if you want to use 0 1 2 3 cores just for the game you would add "F" in your line like so..

for cores 4,5,6,7 Do this....

Add F0 next to /affinity like so

cmd.exe /c start "obs32" /affinity F0 "C:\Program Files (x86)\obs-studio\bin\32bit\obs32.exe"

cmd.exe /c start "obs64" /affinity F0 "C:\Program Files (x86)\obs-studio\bin\64bit\obs64.exe"

Depends on if using 32 or 64bit of the os.

If doing it for obs it will not work as it can't find locale\eng-US.ini and failed to load locale but file is there.

So thats how you would set your affinity settings splitting 8 cores into two 4 cores

Am using windows 10.

You want to use 0,1,2,3 for the game and 4,5,6,7 for obs.

Only thing is that it does not save the settings of affinity after you exit the game it will return back to 8 cores when you start the game again.

So if anyone knows how to Save the settings then please post here as i have hunted on the net for awhile now.

 

CPU / CPU Processor problems / Processor affinity

Hi,

It's possible that some of your computer's processors have been disabled, causing this slow performance. We'd like to learn more about your concern so that we could provide the proper resolution. We just have a few questions for you:

• Just to confirm, how many processors are on your computer? To check, click
  Start, type System Information, and press Enter. The processor value depends on your computer, and will show something like Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz, 3192 Mhz, 4 Core(s), 4 Logical Processor(s).
• Do other programs also show CPU 0 for Processor Affinity?
• What other applications use up the CPU in Task Manager? Please post a screenshot.
• Which build version of Windows 10 is on your computer? To check, click
  Start, type winver, and press Enter. For example, 14393.1066.

 

Unable to set core affinity

I haven't played with setting core affinity in a long time. I also don't use the Steam ecosystem.

If there are multiple processes under a single heading, "Go To Details" isn't available for the whole set. It is available for individual processes. I hope that it's easy for you to determine which of those is appropriate. An example from an uninteresting application: