vcpkg/cmake/ninja using only efficiency cores under windows

[cenit]

I have a machine with intel i7-13850hx. Under windows 10 when building it uses only efficient cores, while under wsl2 it uses all cores available.
There's nothing defined from the environment point of view to limit concurrency.
Is it by design on windows (maybe beyond vcpkg control)?
Am I the only one experiencing it?

Environment

• OS: Windows 10.0.19045
• Compiler: MSVC 17.10.4

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg install opencv4
2. See in task manager cpu load

Expected behavior
All cores to be used

Failure logs

• Nothing related

[autoantwort]

I don't think this is vcpkg related 😅 Is your Laptop connected to power?

[cenit]

yes 🤣

[Thomas1664]

Useful sources:
https://www.xmg.gg/en/news-tips-and-tricks-rendering-e-cores/
https://learn.microsoft.com/en-us/windows/win32/procthread/quality-of-service

[github-actions]

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[autoantwort]

Maybe related to microsoft/vcpkg-tool#1555. Can you try this PR?