Stopwatch class for Java

Which Java class should you use for time performance measurements? (One could use any date/time class, but the reason I’m asking is in .Net there’s a designated Stopwatch class for this purpose) Answer The Spring Framework has an excellent StopWatch class: StopWatch stopWatch = new StopWatch(“My Stop Watch”); stopWatch.start(“initializing”); Thread.sleep(2000); // simulated work stopWatch.stop(); stopWatch.start(“processing”); … Read more

simplest tool to measure C program cache hit/miss and cpu time in linux?

I’m writing a small program in C, and I want to measure it’s performance. I want to see how much time do it run in the processor and how many cache hit+misses has it made. Information about context switches and memory usage would be nice to have too. The program takes less than a second … Read more

Units of a Fourier Transform (FFT) when doing Spectral Analysis of a Signal

My question has to do with the physical meaning of the results of doing a spectral analysis of a signal, or of throwing the signal into an FFT and interpreting what comes out using a suitable numerical package, Specifically: take a signal, say a time-varying voltage v(t) throw it into an FFT (you get back … Read more

How can I measure the speed of code written in PHP? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 1 year ago. Improve this question How can I say which class of many (which all do the same job) execute faster? is there a … Read more

Tool for UI Designer where you can see distances between elements

I am creating tons of pixel-perfect views for static websites. My front-end developers losses their times figuring out distances between related divs, images, etc (using Paint). What I want to achieve is to automate this process and generate an output file when you can easily see those distances just like in CAD software. Sketch has … Read more