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c++ Programming Glossary: nanosecondshttp://stackoverflow.com/questions/10393093/cpu-time-is-always-zero part of the time. You need to also use tv_nsec to get the nanoseconds part. Try something like temp_time.tv_sec time2.tv_sec time1.tv_sec..
Cross platform Sleep function for C++ http://stackoverflow.com/questions/10918206/cross-platform-sleep-function-for-c milliseconds ms you can also replace milliseconds with nanoseconds microseconds seconds minutes or hours . These are static objects..
HPET's frequency vs CPU frequency for measuring time http://stackoverflow.com/questions/12971110/hpets-frequency-vs-cpu-frequency-for-measuring-time time I need to measure function execution time in nanoseconds. Now I want to understand if my computer can do that and what.. is 3.33 GH even 1GHz that one clock duration is one nanoseconds. Doesn't it mean that I can measure by nanoseconds For measuring.. is one nanoseconds. Doesn't it mean that I can measure by nanoseconds For measuring time CPU or HPET's frequency is essential and..
1D or 2D array, what's faster? http://stackoverflow.com/questions/17259877/1d-or-2d-array-whats-faster using QueryPerformanceCounter resolution here at about 300 nanoseconds . for int i 0 i 10000000 i a get_2d p i 3 4 for int i 0 i 10000000..
When is overloading pass by reference (l-value and r-value) preferred to pass-by-value? http://stackoverflow.com/questions/18303287/when-is-overloading-pass-by-reference-l-value-and-r-value-preferred-to-pass-by times and then finds the average time in floating point nanoseconds and prints that out. If two consecutive calls to your high resolution.. resolution clock doesn't return something less than 100 nanoseconds you may want to raise the length of the vectors. Here are my..
fastest (low latency) method for Inter Process Communication between Java and C/C++ http://stackoverflow.com/questions/2635272/fastest-low-latency-method-for-inter-process-communication-between-java-and-c API can achieve an average latency of less than 700 nanoseconds using a shared memory transport. http solacesystems.com news.. to flush CPU caches when doing so and obtained record 72 nanoseconds latency java to java process communication When forced to same..
Access C++ shared library from Java: JNI, JNA, CNI, or SWIG? http://stackoverflow.com/questions/3720563/access-c-shared-library-from-java-jni-jna-cni-or-swig However I measured individual calls at a few hundred nanoseconds on one machine so that's unlikely to matter except in a bottleneck...
Brute-force, single-threaded prime factorization http://stackoverflow.com/questions/3918968/brute-force-single-threaded-prime-factorization 50 cycles per prime. For a 2.5 GHz processor that's 20 nanoseconds. In 20 ns a 50 MB sec hard drive can read about one byte. The..
vector or map, which one to use? http://stackoverflow.com/questions/454762/vector-or-map-which-one-to-use not be worse than that of the vector although it may be in nanoseconds microseconds so does it have something to do with the memory..
High precision arithmetric in Python and/or C/C++? http://stackoverflow.com/questions/4773603/high-precision-arithmetric-in-python-and-or-c-c seconds but more importantly milliseconds microsecond nanoseconds . Conversion is done by these functions note that I haven't..
Convert Windows Filetime to second in Unix/Linux http://stackoverflow.com/questions/6161776/convert-windows-filetime-to-second-in-unix-linux epoch 1970 01 01T00 00 00Z . The Windows ticks are in 100 nanoseconds. Thus a function to get seconds from the UNIX epoch will be..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope surfaces when memory is detected to be corrupt billions of nanoseconds after the corruption happened when it is very hard to figure..
What is the performance cost of having a virtual method in a C++ class? http://stackoverflow.com/questions/667634/what-is-the-performance-cost-of-having-a-virtual-method-in-a-c-class On that architecture a virtual function call costs 7 nanoseconds longer than a direct non virtual function call. So not really.. seem from looking at the assembly... but still only 7 nanoseconds. Edit Andrew Not Sure and others also raise the very good point..
How to get the precision of high_resolution_clock? http://stackoverflow.com/questions/8386128/how-to-get-the-precision-of-high-resolution-clock get to the precision can I somehow at least get a count in nanoseconds of the minimum representable time duration between ticks probably..
timespec equivalent for windows http://stackoverflow.com/questions/8583308/timespec-equivalent-for-windows to timespec as possible in the future I might even require nanoseconds too which nothing I have searched in windows supports. Thanks..
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