If I had the following code: clock_t t; t = clock(); //algorithm t = clock() - t; t would equal the number of ticks to run the program. Is this the same is CPU time? How do I compare CPU time of t...

I am working on a Python script that is going to be run in the command line. The idea is to get a command from the user, run it and then provide the wall-clock time and the CPU time of the command ...

When I have this code in an application: Executors.newFixedThreadPool(4); but I never use this thread pool. Will the idle threads consume CPU time? If so - why?

I'm currently using xhprof library forked by tideways.io for profiling myscript.php execution. From xhprof, i can get the walltime, cputime, memoryusage, and peakmemoryusage. I'm try to benchmark a...

I want to run some benchmarks on a C++ algorithm and want to get the CPU time it takes, depending on inputs. I use Visual Studio 2012 on Windows 7. I already discovered one way to calculate the CPU...

Many scientific computing languages make a distinction between absolute time (wall clock) and CPU time (processor cycles). For example, in Matlab we have: >> tic; pause(1); toc Elapsed time ...

I have two query to filter some userid depend on question and its answers. Scenario Query A is (the original version): SELECT userid FROM mem..ProfileResult WHERE ( ( QuestionID = 4 AND Questio...

I have some WCF services that are hosted in a windows service. Yesterday I looked at Task Manager and noticed that the CPU time for my windows service process was over 5 hours, while the majority o...

I'm running a script that daily downloads, builds and checks a program I'm contributing to. The "check" part implies performing a suit of test runs and comparing results with the reference. As lon...

What is the difference in CPU cycles (or, in essence, in 'speed') between x /= y; and #include <cmath> x = sqrt(y); EDIT: I know the operations aren't equivalent, I'm just arbitrari...