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 1.78 307,992 2213 4.35 79% 50% 50% 65%
Java 10.31 644,560 740 31.47 72% 72% 92% 70%
fasta
source secs mem gz busy cpu load
Haskell GHC 1.40 7,992 1882 4.15 75% 74% 75% 74%
Java 2.22 45,172 2473 5.99 61% 50% 98% 60%
mandelbrot
source secs mem gz busy cpu load
Haskell GHC 4.87 36,328 1975 19.39 99% 100% 100% 99%
Java 6.83 79,108 796 26.86 97% 99% 99% 99%
spectral-norm
source secs mem gz busy cpu load
Haskell GHC 4.10 4,012 987 15.83 97% 97% 99% 95%
Java 4.19 36,680 950 16.31 98% 97% 97% 98%
n-body
source secs mem gz busy cpu load
Haskell GHC 21.87 4,364 1883 86.49 99% 100% 99% 98%
Java 21.95 35,604 1429 22.75 2% 1% 100% 1%
fannkuch-redux
source secs mem gz busy cpu load
Haskell GHC 18.37 4,352 842 72.54 96% 100% 100% 100%
Java 14.33 34,888 1282 56.56 99% 98% 99% 98%
pidigits
source secs mem gz busy cpu load
Haskell GHC 4.22 9,964 585 5.27 8% 100% 9% 9%
Java 3.07 39,320 938 3.31 2% 5% 3% 98%
binary-trees
source secs mem gz busy cpu load
Haskell GHC 12.96 476,448 592 47.98 92% 92% 93% 94%
Java 8.32 953,620 835 28.37 95% 87% 81% 77%
reverse-complement
source secs mem gz busy cpu load
Haskell GHC 6.42 501,528 1020 9.38 14% 100% 16% 16%
Java 3.16 712,368 2183 7.08 65% 47% 42% 70%
k-nucleotide
source secs mem gz busy cpu load
Haskell GHC 35.91 637,624 1486 125.59 86% 86% 86% 91%
Java 9.33 447,976 1812 29.36 73% 83% 82% 77%
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)