Thanks! On my system (5950X, 24H2, Samsung SSD 980 PRO), I observe much less of a performance improvement, but still major: 21126 ns => 10098 ns, for a speedup of 2.1x.

Thanks! On my system (5950X, 24H2, Samsung SSD 980 PRO), I observe much less of a performance improvement, but still major: 21126 ns => 10098 ns, for a speedup of 2.1x.

Thank you too!
Yes, performance improvement depends on filesystem minifilter drivers configuration.
For example, for paths on system drive GetFileAttributes works much slower than for paths from other drives.

I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed.

Thanks again, and congratulations on your first microsoft/STL commit! 😻 🎉 💾

This change is expected to ship in VS 2022 17.13 Preview 3.