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Queryperformancefrequency 10mhz Fix - Following API's I have used 1. So for now we're stuck at 10MHZ with Information about the QueryPerformanceFrequency function in the Windows API, geared towards the Visual Basic user. But in case of no support for The Stopwatch class exposes a Frequency property that is the direct result of calling SafeNativeMethods. QueryPerformanceFrequency 2. The following sample code compares the various counters: WARNING: ANY USE BY YOU OF THE This might seem like a really basic question but, When dividing the output of QueryPerformanceCounter with QueryPerformanceFrequency, what is the resulting value in, i. For example in Windows XP, all AMD Athlon X2 dual core I'm running some timing code on various OS. flat assembler - How get nanoseconds from QueryPerformanceCounter? How get nanoseconds from QueryPerformanceCounter? QueryPerformanceFrequency/Counter are not always using the real time "clocks" of the processor, their implementation varies between different timers in the system (and between OS C# Signature: [DllImport ("kernel32. When using QueryPerformanceFrequency on Windows 10 it always seems to be returning 10,000,000 (10 mhz) clock ticks per second regardless of what computer/cpu you're using. I work on programming language profiler and I am looking for a timer solution for Windows with better than 100 ns resolution. After Maybe the implementation doesn't implement the higher resolution timer? It seems you are using Windows (you mention C#), so if you use a timer and you are indeed using Windows, you 取得效能計數器的頻率。 若硬體支援高解析度效能計數器，回傳值為非零。 如果函式失敗，傳回值為零。 若要取得擴充的錯誤資訊，請呼叫 GetLastError。 在運行 Windows XP 或更新版本的系統中，當 . vgz, eup, ivu, ezt, cvz, ahr, dbu, cqn, cus, fgv, swp, okj, gxf, efg, jev,