Re: [PATCH 0/2] MR7256: ntdll: monotonic_counter and NtQuerySystemTime performance improvements on macOS.

[Elizabeth Figura (＠zfigura)]

> Are there guarantees on the precision of mach_continuous_approximate_time? NtQuerySystemTime theoretically guarantees 100 nanoseconds.

It's capable of expressing 100 ns, but the actual precision of NtQuerySystemTime is the system timer, which is documented as being "approximately 10ms" [1] but in practice is more like 1 ms.

[1] https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/nf-wdm-ke...