Use perf: perf stat ./yourapp See the kernel wiki perf tutorial for details. This uses the hardware performance counters of your CPU, so the overhead is very small. Example from the wiki: perf stat -B dd if=/dev/zero of=/dev/null count=1000000 Performance counter stats for ‘dd if=/dev/zero of=/dev/null count=1000000’: 5,099 cache-misses # 0.005 M/sec (scaled from 66.58%) … Read more
New Way There are several ways to achieve this. *CSS supports dimensions that are relative to viewport. 3.2vw = 3.2% of width of viewport 3.2vh = 3.2% of height of viewport 3.2vmin = Smaller of 3.2vw or 3.2vh 3.2vmax = Bigger of 3.2vw or 3.2vh body { font-size: 3.2vw; } see css-tricks.com/…. and also look … Read more
You have (at least) two solutions : The quite “naïve” one is using microtime(true) tobefore and after a portion of code, to get how much time has passed during its execution ; other answers said that and gave examples already, so I won”t say much more. This is a nice solution if you want to … Read more
You can still do this in top. While top is running, press ‘1’ on your keyboard, it will then show CPU usage per core. Limit the processes shown by having that specific process run under a specific user account and use Type ‘u’ to limit to that user
//***C++11 Style:*** #include <chrono> std::chrono::steady_clock::time_point begin = std::chrono::steady_clock::now(); std::chrono::steady_clock::time_point end = std::chrono::steady_clock::now(); std::cout << “Time difference = ” << std::chrono::duration_cast<std::chrono::microseconds>(end – begin).count() << “[µs]” << std::endl; std::cout << “Time difference = ” << std::chrono::duration_cast<std::chrono::nanoseconds> (end – begin).count() << “[ns]” << std::endl;