1 : Are the Scala programs faster? At a glance.
This chart shows 3 comparisons - Time-used, Memory-used and Code-used.
Each chart bar shows, for one unidentified benchmark, how much the fastest Scala program used compared to the fastest Java 6 -server program.
2 : Are the Scala programs faster? Approximately.
This table shows 3 comparisons - Time-used, Memory-used and Code-used.
Each table row shows, for one named benchmark, how much the fastest Scala program used compared to the fastest Java 6 -server program.
| Scala used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | Reduced N |
| reverse-complement | ± | ± | ± | |
| n-body | ± | ± | ± | |
| spectral-norm | ± | ± | ± | |
| binary-trees | ± | ± | ± | |
| fasta | ± | ± | ± | |
| mandelbrot | ± | ± | ± | |
| regex-dna | ± | ± | ± | |
| fannkuch | ± | 15× | ± | |
| chameneos-redux | 2× | ± | ± | |
| pidigits | 2× | 12× | 1/3 | |
| k-nucleotide | 2× | 2× | ± | |
± read the measurements and then read the program source code.
3 : Are the Scala programs faster? Measurements.
This table shows 5 measurements - CPU Time, Elapsed Time, Memory, Code and ~ CPU Load.
For each named benchmark, measurements of the fastest Scala program are shown for comparison against measurements of the fastest Java 6 -server program.
| Program Source Code | CPU secs | Elapsed secs | Memory KB | Code B | ~ CPU Load |
|---|---|---|---|---|---|
| reverse-complement | |||||
| Scala | 2.37 | 2.31 | 403,140 | 505 | 97% 0% 2% 3% |
| Java 6 -server | 2.71 | 2.67 | 475,908 | 592 | 3% 1% 94% 3% |
| n-body | |||||
| Scala | 23.04 | 23.03 | 17,920 | 1420 | 0% 0% 100% 0% |
| Java 6 -server | 23.13 | 23.13 | 15,100 | 1424 | 0% 0% 0% 100% |
| spectral-norm | |||||
| Scala | 17.66 | 4.56 | 20,720 | 720 | 96% 96% 97% 98% |
| Java 6 -server | 17.33 | 4.51 | 15,208 | 950 | 98% 95% 94% 97% |
| binary-trees | |||||
| Scala | 20.53 | 16.95 | 555,044 | 536 | 14% 12% 83% 12% |
| Java 6 -server | 20.53 | 16.18 | 566,032 | 603 | 13% 86% 16% 11% |
| fasta | |||||
| Scala | 8.98 | 9.01 | 16,048 | 1207 | 95% 0% 0% 5% |
| Java 6 -server | 8.24 | 8.22 | 15,144 | 1240 | 0% 1% 0% 100% |
| mandelbrot | |||||
| Scala | 50.98 | 12.87 | 46,960 | 737 | 99% 99% 99% 99% |
| Java 6 -server | 42.02 | 10.69 | 66,984 | 903 | 98% 98% 98% 99% |
| regex-dna | |||||
| Scala | 30.62 | 13.47 | 747,292 | 659 | 71% 63% 47% 44% |
| Java 6 -server | 26.67 | 10.91 | 681,824 | 929 | 57% 68% 63% 55% |
| fannkuch | |||||
| Scala | 88.80 | 23.89 | 268,980 | 1001 | 92% 93% 90% 95% |
| Java 6 -server | 68.47 | 19.09 | 17,584 | 1150 | 81% 97% 74% 99% |
| chameneos-redux | |||||
| Scala | 44.51 | 14.75 | 37,384 | 1171 | 62% 60% 76% 75% |
| Java 6 -server | 12.57 | 8.64 | 41,288 | 1756 | 37% 45% 15% 40% |
| pidigits | |||||
| Scala | 12.84 | 10.87 | 622,340 | 632 | 7% 9% 93% 8% |
| Java 6 -server | 14.15 | 5.79 | 50,508 | 1816 | 49% 60% 52% 56% |
| k-nucleotide | |||||
| Scala | 91.39 | 27.61 | 981,336 | 1287 | 89% 79% 82% 79% |
| Java 6 -server | 49.22 | 14.57 | 480,408 | 1602 | 79% 78% 98% 82% |
Scala : higher-order type-safe programming for jvm
Scala compiler version 2.7.7.final -- Copyright 2002-2009, LAMP/EPFL
Online book: Programming in Scala pdf
A Scala Tutorial for Java programmers pdf
Home Page: http://scala.epfl.ch/
Download: http://scala.epfl.ch/downloads/index.html
