C gcc programs versus C++ g++ by benchmark task performance reverse-complement source secs mem gz cpu cpu load C gcc 1.75 994,468 1438 3.96 48% 44% 95% 44% C++ g++ 2.95 980,472 2280 4.56 50% 41% 16% 50% fannkuch-redux source secs mem gz cpu cpu load C gcc 8.72 980 910 34.43 98% 97% 100% 100% C++ g++ 10.62 2,040 980 41.91 100% 95% 100% 100% regex-redux source secs mem gz cpu cpu load C gcc 1.50 152,088 1230 4.06 54% 59% 60% 100% C++ g++ 1.66 203,568 1315 4.23 48% 53% 57% 99% pidigits source secs mem gz cpu cpu load C gcc 1.75 2,728 452 1.74 1% 2% 0% 100% C++ g++ 1.89 4,284 513 1.88 5% 0% 1% 100% binary-trees source secs mem gz cpu cpu load C gcc 2.54 130,292 836 7.76 78% 67% 64% 98% C++ g++ 2.62 130,212 809 7.92 76% 67% 63% 99% fasta source secs mem gz cpu cpu load C gcc 1.32 2,892 2268 5.22 100% 100% 99% 99% C++ g++ 1.33 1,956 2711 4.16 79% 79% 79% 79% spectral-norm source secs mem gz cpu cpu load C gcc 1.99 1,292 569 7.89 99% 99% 99% 99% C++ g++ 1.98 1,340 1044 7.87 99% 100% 99% 99% mandelbrot source secs mem gz cpu cpu load C gcc 1.64 26,416 1135 6.55 100% 100% 99% 100% C++ g++ 1.51 25,588 1791 5.99 99% 99% 99% 99% n-body source secs mem gz cpu cpu load C gcc 9.22 1,228 1490 9.22 100% 1% 1% 0% C++ g++ 8.24 1,924 1763 8.23 1% 0% 100% 1% k-nucleotide source secs mem gz cpu cpu load C gcc 5.07 130,008 1506 15.25 88% 84% 58% 73% C++ g++ 3.66 155,956 1624 11.16 70% 98% 70% 68% C gcc gcc (Ubuntu 7.3.0-16ubuntu3) 7.3.0 C++ g++ g++ (Ubuntu 7.3.0-16ubuntu3) 7.3.0 all other C gcc programs & measurements