C gcc versus C++ g++ fastest programs by faster benchmark performance reverse-complement source secs mem gz cpu cpu load C gcc 1.76 994,488 1438 3.98 97% 43% 44% 46% C++ g++ 2.93 980,716 2280 4.52 51% 23% 33% 51% regex-redux source secs mem gz cpu cpu load C gcc 1.46 152,216 1397 3.40 45% 41% 100% 49% C++ g++ 1.83 203,520 1315 4.41 50% 45% 100% 49% fannkuch-redux source secs mem gz cpu cpu load C gcc 8.67 852 910 34.14 99% 100% 100% 95% C++ g++ 10.12 1,852 980 39.95 100% 100% 96% 100% mandelbrot source secs mem gz cpu cpu load C gcc 1.64 26,512 1135 6.54 99% 100% 99% 100% C++ g++ 1.81 29,072 1002 7.10 98% 98% 98% 100% pidigits source secs mem gz cpu cpu load C gcc 1.75 2,672 452 1.75 100% 2% 2% 0% C++ g++ 1.89 4,272 513 1.89 1% 3% 100% 2% n-body source secs mem gz cpu cpu load C gcc 9.37 1,088 1490 9.37 100% 0% 1% 0% C++ g++ 9.42 1,704 1763 9.41 2% 100% 1% 0% spectral-norm source secs mem gz cpu cpu load C gcc 1.98 1,168 1139 7.87 100% 99% 100% 99% C++ g++ 1.98 1,164 1044 7.87 99% 99% 99% 100% binary-trees source secs mem gz cpu cpu load C gcc 3.73 116,600 836 11.74 76% 71% 98% 72% C++ g++ 3.68 119,052 809 11.93 98% 76% 77% 78% fasta source secs mem gz cpu cpu load C gcc 1.36 2,864 2268 5.41 99% 100% 100% 99% C++ g++ 1.33 1,740 2711 4.29 81% 81% 81% 82% k-nucleotide source secs mem gz cpu cpu load C gcc 4.88 130,060 1506 16.06 87% 96% 87% 60% C++ g++ 3.73 156,080 1624 11.60 75% 70% 72% 96% C gcc gcc (Ubuntu 8.2.0-7ubuntu1) 8.2.0 C++ g++ g++ (Ubuntu 8.2.0-7ubuntu1) 8.2.0 all other C gcc programs & measurements