C gcc programs versus C++ g++ by benchmark task performance reverse-complement source secs mem gz cpu cpu load C gcc 1.78 994,444 1438 3.96 42% 49% 96% 42% C++ g++ 3.08 980,604 2280 4.66 62% 25% 12% 54% fannkuch-redux source secs mem gz cpu cpu load C gcc 8.66 980 910 34.22 100% 97% 100% 100% C++ g++ 10.61 2,044 980 41.90 100% 96% 100% 100% k-nucleotide source secs mem gz cpu cpu load C gcc 6.67 130,160 1506 19.33 76% 50% 92% 75% C++ g++ 7.75 165,180 1276 26.02 80% 96% 82% 79% regex-redux source secs mem gz cpu cpu load C gcc 1.48 152,352 1230 4.05 59% 99% 57% 61% C++ g++ 1.61 203,572 1315 4.18 100% 52% 57% 54% pidigits source secs mem gz cpu cpu load C gcc 1.74 2,716 452 1.74 100% 1% 1% 2% C++ g++ 1.88 4,276 513 1.88 0% 100% 1% 0% binary-trees source secs mem gz cpu cpu load C gcc 2.44 133,956 836 7.57 80% 65% 68% 100% C++ g++ 2.55 135,568 809 7.99 85% 96% 69% 66% fasta source secs mem gz cpu cpu load C gcc 1.32 2,912 2268 5.25 100% 99% 100% 99% C++ g++ 1.35 1,952 2711 4.18 79% 78% 78% 79% spectral-norm source secs mem gz cpu cpu load C gcc 2.00 1,300 569 7.89 99% 99% 100% 99% C++ g++ 2.02 1,332 1044 7.91 99% 99% 99% 99% mandelbrot source secs mem gz cpu cpu load C gcc 1.64 29,424 1135 6.53 99% 100% 100% 100% C++ g++ 1.51 25,704 1791 5.99 99% 100% 100% 100% n-body source secs mem gz cpu cpu load C gcc 9.12 1,176 1490 9.12 1% 100% 2% 2% C++ g++ 8.23 1,856 1763 8.23 100% 1% 1% 0% C gcc gcc (Ubuntu 7.2.0-8ubuntu3) 7.2.0 C++ g++ g++ (Ubuntu 7.2.0-8ubuntu3) 7.2.0 vs C++ vs Java