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Results of some quick research on timing in Win32 by Ryan several references to the "RDTSC" Pentium instruction rdtsc' and QueryPerformanceCounter()
RDTSC, RDTSCP and QueryPerformanceCounter During a recent project to implement the ICorProfilerCallback2 interface, The first instruction, rdtsc,
RDTSCP versus RDTSC + CPUID. Ask Question. Most recently I've come across the RDTSCP* instruction, which seems to do what RDTSC+CPUID did,
An anonymous coward asks whether the QueryPerformanceCounter QueryPerformanceCounter counts elapsed time, not an instruction like RDTSC,
QueryPerformanceCounter. IsProcessorFeaturePresent function. PF_RDTSC_INSTRUCTION_AVAILABLE 8: The RDTSC instruction is available.
Does QueryPerformanceCounter() always work? you just need CPU to support the RDTSC instruction, how did you know that QueryPerformanceCounter
You can use the Win32 functions QueryPerformanceCounter and QueryPerformanceFrequency to Use Microsoft Visual Studio® .NET or any text editor to create a new C#
The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com. Generates the rdtsc instruction,
Precise timings with low jitter via RDTSC This makes the RDTSC instruction even more A quick and dirty manual way is tracing into QueryPerformanceCounter();
About Intel CPU rdtsc instruction . I played the following piece of code on both Windows and Linux Microsoft recommends using QueryPerformanceCounter instead of RDTSC
QueryPerformanceCounter reports that the time difference is 1.17 seconds. But this would defeat the main purpose of rdtsc instruction?
QueryPerformanceCounter reports that the time difference is 1.17 seconds. But this would defeat the main purpose of rdtsc instruction?
How do I obtain CPU cycle count in Win32? You can use the RDTSC CPU instruction to be careful of sitting in a loop calling QueryPerformanceCounter,
Mastering Multicore Performance. Blog; Intent; which executes the RDTSC instruction. QueryPerformanceCounter()
QueryPerformanceCounter. QueryPerformanceCounter is high-resolution counter available on Windows API(Windows.h) based and built on the RDTSC instruction.
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