Hack programs versus PHP by benchmark task performance binary-trees source secs mem gz cpu cpu load Hack 10.90 351,656 742 34.16 86% 87% 81% 63% PHP 65.20 736,468 868 235.57 93% 94% 92% 98% mandelbrot source secs mem gz cpu cpu load Hack 42.45 99,020 877 166.87 98% 99% 99% 99% PHP 118.07 137,452 875 471.57 100% 100% 100% 100% fasta source secs mem gz cpu cpu load Hack 41.54 86,892 1147 41.52 69% 4% 4% 32% PHP 59.12 9,412 1062 59.11 40% 0% 1% 60% spectral-norm source secs mem gz cpu cpu load Hack 31.83 88,408 1212 124.68 98% 98% 98% 99% PHP 37.09 20,208 1152 147.78 100% 100% 100% 100% fannkuch-redux source secs mem gz cpu cpu load Hack 226.71 86,800 1160 894.82 100% 99% 99% 99% PHP 233.57 34,748 1160 929.49 100% 99% 100% 99% regex-redux source secs mem gz cpu cpu load Hack 3.44 238,608 815 3.18 34% 31% 44% 73% PHP 2.63 270,048 816 2.46 38% 39% 85% 38% k-nucleotide source secs mem gz cpu cpu load Hack 59.22 293,544 1081 201.51 90% 89% 77% 88% PHP 41.39 242,044 1079 133.27 83% 76% 73% 91% n-body source secs mem gz cpu cpu load Hack 666.77 88,744 1439 666.62 9% 1% 1% 91% PHP 353.84 9,220 1082 353.77 0% 100% 1% 0% reverse-complement source secs mem gz cpu cpu load Hack Bad Output PHP 0.50 ? 438 ? 6% 8% 8% 92% pidigits source secs mem gz cpu cpu load Hack Bad Output PHP 0.12 ? 399 0.10 0% 55% 100% 0% Hack HipHop VM 3.21.0 (rel) Compiler: 3.21.0+dfsg-2 Repo schema: 1c159cf2047dca5f4a3363b2138a33e14a1e99fa PHP PHP 7.2.0 (cli) (built: Nov 30 2017 10:13:12) ( NTS ) Copyright (c) 1997-2017 The PHP Group Zend Engine v3.2.0, Copyright (c) 1998-2017 Zend Technologies vs Java vs PHP