How can I get the Windows system time with millisecond resolution? If the above is not possible, then how can I get the operating system start time? I would like to use this value together with tim...

How do I get microsecond resolution timestamps on Windows? I am loking for something better than QueryPerformanceCounter and QueryPerformanceFrequency (these can only give you an elapsed time sinc...

Is there a high resolution timer that raises an event each time the timer elapses, just like the System.Timer class? I need a high resolution timer to Elapse every ms. I keep running into posts t...

I'm trying to compare GPU to CPU performance. For the NVIDIA GPU I've been using the cudaEvent_t types to get a very precise timing. For the CPU I've been using the following code: // Timers cloc...

I got this code from How to get duration, as int milli's and float seconds from <chrono>? #include <chrono> #include <iostream> int main (int argc, char *argv[]) { auto t0 ...

I need to know how can I calculate the time of a function in C code in nanoseconds. I tried to repeat the function until consume some microseconds. Are there any other functions in time.h that can ...

I'm looking for high-resolution timing code for iPhone, in order to do some performance timings. I'd like to write code like this: HighResolutionTimer* myTimer = [[HighResolutionTimer alloc]init];...

I need to get the millisecond accuracy. I take a look on this question but I am working on Windows: it gives linking errors for POSIX functions. It will be very good if I can get UTC time since 197...

I want to measure the speed of a function within a loop. But why my way of doing it always print "0" instead of high-res timing with 9 digits decimal precision (i.e. in nano/micro seconds)? What's...

I need a very accurate way to time parts of my program. I could use the regular high-resolution clock for this, but that will return wallclock time, which is not what I need: I needthe time spent r...