: Even if the program you are trying to run does not explicitly use high-precision time tracking, it will still crash at launch if its compiler or a third-party .dll dependency relies on this missing API.
The iperf3 community has addressed this by:
Windows 7 lacks this function, leading to a crash when an application calls it. The Solution: Installing Update KB2999226 getsystemtimepreciseasfiletime windows 7 upd
In the world of Windows software development, system time functions play a crucial role in applications that require accurate timing, from network performance testing tools to multimedia applications. One such function, GetSystemTimePreciseAsFileTime , has become a significant point of contention for Windows 7 users. This comprehensive article explores everything you need to know about this API, its availability on Windows 7, the errors it causes, and practical solutions for maintaining compatibility.
The lack of native GetSystemTimePreciseAsFileTime in Windows 7 once forced developers into messy workarounds. However, with , Microsoft officially back-ported this essential function, allowing legacy systems to achieve near-microsecond timestamp resolution. : Even if the program you are trying
GetSystemTimePreciseAsFileTime is slower than GetSystemTimeAsFileTime because it must read from the high-resolution timer and convert to system time format. For non-critical paths, this is fine.
: It cooperates closely with the motherboard's hardware clock (such as the High Precision Event Timer, or HPET) to prevent time-stamping drift in high-performance operations. The Compatibility Core Problem use dynamic loading with fallback:
For code that must run on any Windows 7 installation (with or without the update) and newer Windows versions, use dynamic loading with fallback: