Step 1 : Are the Haskell GHC programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
Each chart bar shows, for one unidentified benchmark, how much the fastest Haskell GHC program used compared to the fastest Java 7 -server program.
Look at speed another way - look at a box plot of Time-used data.
Step 2 : Are the Haskell GHC programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used ~ speed and size.
Each table row shows, for one named benchmark, how much the fastest Haskell GHC program used compared to the fastest Java 7 -server program.
| Haskell GHC used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | |
| pidigits | ± | 1/8 | 1/5 | |
| spectral-norm | ± | 1/12 | ± | |
| regex-dna | ± | 1/3 | 2× | |
| reverse-complement | ± | 1/2 | 1/2 | |
| binary-trees | ± | ± | 1/2 | |
| fannkuch-redux | 2× | 1/12 | ± | |
| n-body | 2× | 1/7 | ± | |
| fasta | 3× | 1/8 | ± | |
| k-nucleotide | 4× | ± | ± | |
| Haskell GHC used what fraction? used how many times more? | |||||||
|---|---|---|---|---|---|---|---|
| Time-used | |- | |--- | 25% | median | 75% | ---| | -| |
| (Elapsed secs) | ± | ± | ± | ± | 2× | 3× | 4× |
± read the measurements and then read the program source code.
Step 3 : Are the Haskell GHC programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ≈ CPU Load ~ speed and size.
For each named benchmark, measurements of the fastest Haskell GHC program are shown for comparison against measurements of the fastest Java 7 -server program.
| Program Source Code | CPU secs | Elapsed secs | Memory KB | Code B | ≈ CPU Load |
|---|---|---|---|---|---|
| pidigits | |||||
| Haskell GHC | 7.28 | 4.72 | 4,864 | 341 | 23% 60% 32% 38% |
| Java 7 -server | 9.25 | 4.69 | 41,156 | 1808 | 77% 27% 15% 74% |
| spectral-norm | |||||
| Haskell GHC | 18.77 | 4.84 | 1,172 | 984 | 97% 97% 97% 97% |
| Java 7 -server | 16.27 | 4.18 | 14,224 | 950 | 96% 97% 98% 98% |
| regex-dna | |||||
| Haskell GHC | 45.62 | 12.03 | 205,776 | 1518 | 93% 96% 96% 95% |
| Java 7 -server | 28.02 | 10.02 | 682,200 | 929 | 66% 62% 62% 92% |
| reverse-complement | |||||
| Haskell GHC | 2.22 | 2.01 | 125,816 | 999 | 4% 2% 100% 4% |
| Java 7 -server | 3.02 | 1.54 | 294,356 | 1661 | 42% 32% 71% 52% |
| binary-trees | |||||
| Haskell GHC | 38.79 | 13.26 | 406,632 | 612 | 78% 65% 83% 68% |
| Java 7 -server | 20.54 | 9.73 | 522,484 | 1007 | 55% 27% 76% 57% |
| fannkuch-redux | |||||
| Haskell GHC | 120.52 | 30.65 | 1,172 | 1153 | 100% 96% 99% 100% |
| Java 7 -server | 67.86 | 17.17 | 13,732 | 1282 | 98% 98% 99% 100% |
| n-body | |||||
| Haskell GHC | 52.71 | 50.34 | 1,956 | 1695 | 26% 23% 33% 23% |
| Java 7 -server | 24.29 | 24.26 | 13,668 | 1424 | 0% 0% 100% 0% |
| fasta | |||||
| Haskell GHC | 15.59 | 14.53 | 1,956 | 1413 | 20% 53% 21% 15% |
| Java 7 -server | 4.96 | 4.89 | 14,784 | 1507 | 1% 1% 1% 100% |
| k-nucleotide | |||||
| Haskell GHC | 89.94 | 41.11 | 344,112 | 2749 | 70% 47% 70% 34% |
| Java 7 -server | 33.74 | 9.19 | 386,060 | 2431 | 90% 90% 91% 97% |
| fasta-redux | |||||
| Java 7 -server | 0.13 | 0.11 | ? | 1443 | 18% 0% 100% 20% |
| mandelbrot | |||||
| Haskell GHC | |||||
| Java 7 -server | 0.30 | 0.13 | ? | 802 | 43% 42% 93% 50% |
Step 4 : Are there other Haskell GHC programs for these benchmarks?
Remember - those are just the fastest Haskell GHC and Java 7 -server programs measured on this OS/machine. Check if there are other implementations of these benchmark programs for Haskell GHC.
Maybe one of those other Haskell GHC programs is fastest on a different OS/machine.
Step 5 : Are there other faster programs for these benchmarks?
Remember - those are just the fastest Haskell GHC and Java 7 -server programs measured on this OS/machine. Check if there are faster implementations of these benchmark programs for other programming languages.
Maybe one of those other programs is fastest on a different OS/machine.
Haskell GHC : lazy pure functional programming
The Glorious Glasgow Haskell Compilation System, version 7.4.1
Home Page: http://www.haskell.org/
Download: http://www.haskell.org/ghc/