Limit number of active cores at run-time

perdrix · Dec 29, 2023

I know that I can use MSCONFIG to limit the maximum number of cores that will be used. This takes effect at boot time.

Is there any way to adjust the number of cores when the system is in use? If I want to benchmark the performance of some multi-threaded software with differing core counts, it would be nice to be able to adjust the limit at run time, rather than changing the limit in MSCONFIG and re-booting.

Is this possible?

Thanks

iko22 · Dec 29, 2023

At runtime, you can set the affinity of number of cores for a particular App.

Pro Tip: Assign specific processor cores for certain apps in Windows 10

For those Pros: Are you a power user doing heavy editing or intense processing work? Set your processor cores for specific apps to make things more efficient! Here's how.

www.windowscentral.com

That is all I know.

perdrix · Dec 29, 2023

Thank you for the suggestion.

On consideration, I think that for the use case I have in mind the original approach of MSCONFIG and reboot seems to win.

Cheers
David