The Computer Language
Benchmarks Game

Haskell GHC versus Java fastest programs

Back in April 2010, Russ Cox charitably suggested that only fannkuch-redux, fasta, k-nucleotide, mandlebrot, nbody, reverse-complement and spectral-norm were close to fair comparisons. As someone who implemented programming languages, his interest was "measuring the quality of the generated code when both compilers are presented with what amounts to the same program."

Differences in approach - to memory management, parallel programming, regex, arbitrary precision arithmetic, implementation technique - don't fit in that kind-of fair comparison — but we still have to deal with them.

These are only the fastest programs. There may be additional measurements for programs which seem more-like a fair comparison to you. Always look at the source code.

regex-redux
source secs mem gz busy cpu load
Haskell GHC 1.72 307,968 2213 3.77 78% 40% 61% 40%
Java 10.25 634,884 740 30.23 68% 95% 67% 65%
fasta
source secs mem gz busy cpu load
Haskell GHC 1.43 7,900 1882 4.25 76% 76% 73% 73%
Java 2.24 44,876 2473 6.13 18% 79% 79% 97%
spectral-norm
source secs mem gz busy cpu load
Haskell GHC 4.08 4,060 987 15.82 97% 97% 97% 97%
Java 4.20 36,636 950 16.37 97% 98% 97% 97%
n-body
source secs mem gz busy cpu load
Haskell GHC 21.87 4,232 1883 86.49 100% 99% 98% 99%
Java 21.91 35,356 1429 22.28 100% 0% 0% 1%
fannkuch-redux
source secs mem gz busy cpu load
Haskell GHC 18.37 4,296 842 72.64 100% 100% 96% 100%
Java 17.93 34,616 1282 70.89 98% 100% 98% 99%
pidigits
source secs mem gz busy cpu load
Haskell GHC 4.21 9,296 379 5.24 9% 100% 8% 8%
Java 3.07 39,184 938 3.29 99% 3% 4% 1%
binary-trees
source secs mem gz busy cpu load
Haskell GHC 13.34 466,176 592 49.53 95% 93% 92% 91%
Java 8.29 966,764 835 27.76 86% 80% 86% 83%
mandelbrot
source secs mem gz busy cpu load
Haskell GHC 11.65 39,512 782 46.54 100% 100% 100% 100%
Java 6.90 78,956 796 27.14 99% 98% 98% 98%
reverse-complement
source secs mem gz busy cpu load
Haskell GHC 6.28 501,496 1020 8.42 11% 11% 11% 100%
Java 3.26 738,800 2183 7.49 44% 63% 73% 48%
k-nucleotide
source secs mem gz busy cpu load
Haskell GHC 37.65 756,564 1486 132.24 87% 86% 87% 91%
Java 9.06 435,240 1812 28.35 98% 73% 72% 69%
Haskell GHC

The Glorious Glasgow Haskell Compilation System,
version 8.8.1

Java

openjdk 13 2019-09-17
OpenJDK Runtime Environment (build 13+33)
OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing)