"After all, facts are facts, and although we may quote one to another with a chuckle the words of the Wise Statesman, 'Lies--damned lies--and statistics,' still there are some easy figures the simplest must understand, and the astutest cannot wriggle out of." Leonard Henry Courtney, 1895

tl;dr

Measurement is highly specific -- the time taken for this benchmark task, by this toy program, with this programming language implementation, with these options, on this computer, with these workloads.

Same toy program, same computer, same workload -- but much slower.

Measurement is not prophesy.

 
 x86 Ubuntu™ Intel® Q6600® one core  x64 Ubuntu™ Intel® Q6600® quad-core  x86 Ubuntu™ Intel® Q6600® quad-core  x64 Ubuntu™ Intel® Q6600® one core 
 
Ada 2005 GNATAda 2005 GNATAda 2005 GNATAda 2005 GNAT
C gccC gccC gccC gcc
ClojureClojureClojureClojure
C# MonoC# MonoC# MonoC# Mono
C++ g++C++ g++C++ g++C++ g++
DartDartDartDart
Erlang HiPEErlang HiPEErlang HiPEErlang HiPE
F# MonoF# MonoF# MonoF# Mono
Fortran IntelFortran IntelFortran IntelFortran Intel
GoGoGoGo
 Hack Hack
Haskell GHCHaskell GHCHaskell GHCHaskell GHC
JavaJavaJavaJava
JavaScript V8  JavaScript V8
Lisp SBCLLisp SBCLLisp SBCLLisp SBCL
Lua  Lua
OCamlOCamlOCamlOCaml
Free PascalFree PascalFree PascalFree Pascal
PerlPerlPerlPerl
PHPPHPPHPPHP
Python 3Python 3Python 3Python 3
RacketRacketRacketRacket
RubyRubyRubyRuby
JRubyJRubyJRubyJRuby
RustRustRustRust
ScalaScalaScalaScala
Smalltalk VisualWorks  Smalltalk VisualWorks
 
 x86 Ubuntu™ Intel® Q6600® one core  x64 Ubuntu™ Intel® Q6600® quad-core  x86 Ubuntu™ Intel® Q6600® quad-core  x64 Ubuntu™ Intel® Q6600® one core 
 
n-bodyPerform an N-body simulation of the Jovian planetsn-bodyn-body
fannkuch-reduxRepeatedly access a tiny integer-sequencefannkuch-reduxfannkuch-redux
meteor-contestSearch for solutions to shape packing puzzlemeteor-contestmeteor-contest
fastaGenerate and write random DNA sequencesfastafasta
spectral-normCalculate an eigenvalue using the power methodspectral-normspectral-norm
reverse-complementRead DNA sequences and write their reverse-complementreverse-complementreverse-complement
mandelbrotGenerate a Mandelbrot set and write a portable bitmapmandelbrotmandelbrot
k-nucleotideRepeatedly update hashtables and k-nucleotide stringsk-nucleotidek-nucleotide
regex-dnaMatch DNA 8-mers and substitute nucleotides for IUB coderegex-dnaregex-dna
pidigitsCalculate the digits of Pi with streaming arbitrary-precision arithmeticpidigitspidigits
chameneos-reduxRepeatedly perform symmetrical thread rendezvous requestschameneos-reduxchameneos-redux
thread-ringRepeatedly switch from thread to thread passing one tokenthread-ringthread-ring
binary-treesAllocate and deallocate many many binary treesbinary-treesbinary-trees
 
 x86 Ubuntu™ Intel® Q6600® one core  x64 Ubuntu™ Intel® Q6600® quad-core  x86 Ubuntu™ Intel® Q6600® quad-core  x64 Ubuntu™ Intel® Q6600® one core 
 
Which programs are fastest?Which programs are fastest?Which programs are fastest?Which programs are fastest?

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