c++ Programming Glossary: timings

http://stackoverflow.com/questions/1060648/fast-intersection-of-sets-c-vs-c-sharp

under another compiler just to see if you get similar timings there. Finally you might find these blog posts relevant for..

Why is my program slow when looping over exactly 8192 elements?

http://stackoverflow.com/questions/12264970/why-is-my-program-slow-when-looping-over-exactly-8192-elements

Small difference in matrix size large difference in timings But that's only because there's one other problem with the code...

Performance degradation due to default initialisation of elements in standard containers

http://stackoverflow.com/questions/15952412/performance-degradation-due-to-default-initialisation-of-elements-in-standard-co

for simple_function size_t i return i I get the following timings using gcc 4.8 with O3 clang 3.2 produced ~10 slower code timing.. a standard library container which would give these latter timings Or do I have to resort to manage the memory myself Now what.. potentially serious performance degradation. Here are the timings for set_omp_v0 and a equivalent cheating method using my macbook's..

Most optimized way of concatenation in strings

http://stackoverflow.com/questions/18892281/most-optimized-way-of-concatenation-in-strings

Which has been the most reliable, fastest Windows C++ profiler that you have used?

http://stackoverflow.com/questions/2308026/which-has-been-the-most-reliable-fastest-windows-c-profiler-that-you-have-use

and a mechanism for capturing data either as function timings or as a timeline at time T in function X . The code uses QueryPerformanceCounter.. function X . The code uses QueryPerformanceCounter for the timings and writes the data into named shared memory via CreateFileMapping..

cin or printf?

http://stackoverflow.com/questions/3551319/cin-or-printf

c share improve this question To bet on relative timings of console IO functions is imho without any real use. This is..

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

functions cost share improve this question I ran some timings on a 3ghz in order PowerPC processor. On that architecture a.. does not but maybe Intel's most recent hardware does. My timings control for the influence of icache misses on execution deliberately..

How can adding code to a loop make it faster?

http://stackoverflow.com/questions/688325/how-can-adding-code-to-a-loop-make-it-faster

many times reversing the order they're run in and the timings are roughly the same every time. I know there's a lot of mystery..

Speed of accessing local vs. global variables in gcc/g++ at different optimization levels

http://stackoverflow.com/questions/7241035/speed-of-accessing-local-vs-global-variables-in-gcc-g-at-different-optimizati

in C but their C counterparts give practically the same timings global 0 for int i 0 i SIZE i global which uses a global variable.. p start p start SIZE p tmp p global tmp Here at O0 the timings are close though the version using the local variable is slightly..

Same program faster on Linux than Windows — why?

http://stackoverflow.com/questions/8071851/same-program-faster-on-linux-than-windows-why

I used timethis.exe . UPDATE I did some more precise timings comparing the running time for different inputs run time must..

Finding out the CPU clock frequency (per core, per processor)

http://stackoverflow.com/questions/8351944/finding-out-the-cpu-clock-frequency-per-core-per-processor

in depth information about the system bus speed memory timings etc. However is there a programmatic way of calculating the..

Why C++ lambda is slower than ordinary function when called multiple times?

http://stackoverflow.com/questions/8611756/why-c-lambda-is-slower-than-ordinary-function-when-called-multiple-times

v i 1.0 this adds O 1 time and prevents caching both cases timings are approximately equal with lambda as a favourite. share improve..

Comprehensive vector vs linked list benchmark for randomized insertions/deletions

http://stackoverflow.com/questions/9764452/comprehensive-vector-vs-linked-list-benchmark-for-randomized-insertions-deletion

that can be done beforehand so it does not influence the timings As a bonus it would be nice to be able to apply this to two..