Cache GetSystemInfo.dwNumberOfProcessors.
GetCPUCount is very slow (unlike GetCurrentProcessId); it takes 1.6~2 μs on my computer because its inner GetSystemInfo does several syscalls. While it shouldn’t matter (unless...), it’s unpleasant.
GetCPUCount is very slow (unlike GetCurrentProcessId); it takes 1.6~2 μs on my computer because its inner GetSystemInfo does several syscalls. While it shouldn’t matter (unless...), it’s unpleasant.