Step 1 : Are the Smalltalk VisualWorks 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 Smalltalk VisualWorks program used compared to the fastest Java 6 -server program.
Step 2 : Are the Smalltalk VisualWorks 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 Smalltalk VisualWorks program used compared to the fastest Java 6 -server program.
| Smalltalk VisualWorks used what fraction? used how many times more? | ||||
|---|---|---|---|---|
| Benchmark | Time | Memory | Code | Reduced N |
| partial-sums | ± | ± | ± | |
| binary-trees | ± | ± | ± | |
| nsieve | 2× | 2× | ± | |
| k-nucleotide | 4× | 1/2 | ± | |
| nsieve-bits | 4× | ± | ± | |
| reverse-complement | 5× | ± | ± | |
| pidigits | 5× | 2× | ± | |
| fasta | 5× | ± | ± | |
| fannkuch | 8× | ± | ± | |
| regex-dna | 9× | 1/2 | 1/2 | |
| chameneos-redux | 10× | ± | 2× | |
| sum-file | 12× | ± | ± | |
| spectral-norm | 14× | ± | ± | |
| recursive | 24× | 3× | ± | |
| n-body | 33× | ± | ± | |
| mandelbrot | 49× | ± | ± | |
± read the measurements and then read the program source code.
Step 3 : Are the Smalltalk VisualWorks 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 Smalltalk VisualWorks program are shown for comparison against measurements of the fastest Java 6 -server program.
Measurements for all the accepted programs
Smalltalk VisualWorks : uniform reflective environment - real live objects
Code size measurements are misleading for Smalltalk because source files are usually only used to archive or transfer code. Smalltalk code is created, stored and run in a Smalltalk image. We show Smalltalk source code in a verbose chunk file format used to archive or transfer source code between Smalltalk images.
"Design Principles Behind Smalltalk" by Daniel Ingalls
VisualWorks(R) 7.6 Feb 14 2008
Home Page: Cincom Smalltalk™ VisualWorksl® Environment Data Sheet
Download: VisualWorksl® Non-Commercial
We've made the Smalltalk code a little more generic by abstracting out these implementation specific details:
Object subclass: #Tests instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'Shootout'! !Tests class methodsFor: 'platform'! arg ^CEnvironment commandLine last asNumber! ! !Tests class methodsFor: 'platform'! stdin ^Stdin! ! !Tests class methodsFor: 'platform'! stdinSpecial ^ExternalReadStream on: (ExternalConnection ioAccessor: (UnixDiskFileAccessor new handle: 0))! ! !Tests class methodsFor: 'platform'! stdout ^Stdout! ! !Tests class methodsFor: 'platform'! stdoutSpecial ^ExternalWriteStream on: (ExternalConnection ioAccessor: (UnixDiskFileAccessor new handle: 1))! ! !Stream methodsFor: 'platform'! nl self nextPut: Character lf! ! !Stream methodsFor: 'platform'! print: number digits: decimalPlaces self nextPutAll: ((number asFixedPoint: decimalPlaces) printString copyWithout: $s)! ! !Stream methodsFor: 'platform'! print: number paddedTo: width number printOn: self paddedWith: $ to: width base: 10! ! !Integer methodsFor: 'platform'! asFloatD ^self asDouble! !