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 1.73 308,544 2213 3.98 64% 76% 45% 45%
Java 10.48 645,680 740 31.62 72% 87% 74% 68%
fasta
source secs mem gz busy cpu load
Haskell GHC 1.88 8,332 1998 4.80 64% 65% 64% 63%
Java 2.23 45,156 2473 5.99 51% 62% 59% 97%
spectral-norm
source secs mem gz busy cpu load
Haskell GHC 4.05 3,900 987 15.74 97% 97% 97% 98%
Java 4.19 36,740 950 16.36 98% 97% 98% 98%
n-body
source secs mem gz busy cpu load
Haskell GHC 21.96 4,160 1883 86.83 98% 99% 98% 100%
Java 21.94 35,588 1429 22.39 100% 0% 1% 1%
fannkuch-redux
source secs mem gz busy cpu load
Haskell GHC 18.12 4,264 842 71.41 96% 100% 100% 99%
Java 17.04 34,236 1282 67.30 99% 98% 100% 98%
pidigits
source secs mem gz busy cpu load
Haskell GHC 4.20 10,248 379 5.32 86% 9% 8% 23%
Java 3.07 39,680 938 3.30 99% 3% 0% 5%
binary-trees
source secs mem gz busy cpu load
Haskell GHC 13.52 493,528 592 50.12 92% 90% 92% 97%
Java 8.28 907,060 835 27.59 86% 90% 80% 77%
reverse-complement
source secs mem gz busy cpu load
Haskell GHC 5.93 501,548 1020 7.92 100% 12% 10% 12%
Java 3.27 740,524 2183 7.44 44% 57% 84% 43%
mandelbrot
source secs mem gz busy cpu load
Haskell GHC 11.60 37,756 782 46.30 100% 100% 100% 100%
Java 5.98 79,184 796 23.43 98% 98% 97% 99%
k-nucleotide
source secs mem gz busy cpu load
Haskell GHC 35.69 756,200 1486 126.21 88% 88% 87% 90%
Java 8.70 446,004 1812 27.18 83% 78% 78% 73%
Haskell GHC

The Glorious Glasgow Haskell Compilation System,
version 8.6.5

Java

openjdk 12 2019-03-19
OpenJDK Runtime Environment (build 12+33)
OpenJDK 64-Bit Server VM (build 12+33, mixed mode, sharing)