Piotr Caban piotr.caban@gmail.com writes:
I've also done some quick performance tests of GetTimeZoneInformation function and it works fast on Windows (it takes over 10 seconds to execute the function 10k times on wine while it takes ~10ms on Windows).
This is a regression that should be fixed. It's fine to use RtlQueryTimeZoneInformation instead in places where it's a trivial replacement, but we shouldn't be adding complex mechanisms to work around GetTimeZoneInformation's slowness.