Hack programs versus Java by benchmark task performance regex-redux source secs mem gz cpu cpu load Hack 3.44 238,608 815 3.18 34% 31% 44% 73% Java 10.51 573,972 929 31.30 70% 73% 70% 86% binary-trees source secs mem gz cpu cpu load Hack 10.90 351,656 742 34.16 86% 87% 81% 63% Java 8.39 933,808 835 28.28 82% 86% 84% 88% k-nucleotide source secs mem gz cpu cpu load Hack 59.22 293,544 1081 201.51 90% 89% 77% 88% Java 8.75 385,056 1812 27.09 85% 72% 70% 85% mandelbrot source secs mem gz cpu cpu load Hack 42.45 99,020 877 166.87 98% 99% 99% 99% Java 6.10 76,520 796 23.59 97% 98% 98% 96% spectral-norm source secs mem gz cpu cpu load Hack 31.83 88,408 1212 124.68 98% 98% 98% 99% Java 4.38 35,388 950 16.80 96% 96% 95% 97% fannkuch-redux source secs mem gz cpu cpu load Hack 226.71 86,800 1160 894.82 100% 99% 99% 99% Java 18.27 31,820 1282 72.06 99% 99% 98% 98% fasta source secs mem gz cpu cpu load Hack 41.54 86,892 1147 41.52 69% 4% 4% 32% Java 2.27 43,628 2473 5.93 51% 75% 57% 81% n-body source secs mem gz cpu cpu load Hack 666.77 88,744 1439 666.62 9% 1% 1% 91% Java 22.17 33,040 1489 22.27 100% 1% 0% 1% pidigits source secs mem gz cpu cpu load Hack Bad Output Java 0.28 1,028 938 0.36 43% 11% 19% 66% reverse-complement source secs mem gz cpu cpu load Hack Bad Output Java 0.34 2,096 2183 0.49 50% 56% 24% 47% Hack HipHop VM 3.21.0 (rel) Compiler: 3.21.0+dfsg-2 Repo schema: 1c159cf2047dca5f4a3363b2138a33e14a1e99fa Java java 10 2018-03-20 Java(TM) SE Runtime Environment 18.3 (build 10+46) Java HotSpot(TM) 64-Bit Server VM 18.3 (build 10+46, mixed mode) vs Java vs PHP