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 Are the JavaScript V8 programs faster?

Do the JavaScript V8 programs use optimized assembly code libraries? Are they small simple programs or very optimized programs? Do the JavaScript V8 programs use a fraction of the time used by other programs or do they use several times more?


 JavaScript V8 used what fraction? used how many times more? 
Programs Time Memory Code Reduced N
↓ regex-dna1/62×1/3
↓ k-nucleotide7×1/31/3
↓ spectral-norm7×21×1/4
↓ fasta8×57×±
↓ binary-trees8×2×1/2
↓ n-body9×49×±
↓ fannkuch15×15×1/2
↓ reverse-complement29×3×1/2
↓ pidigits87×21×±

± look at the measurements and then look at the programs.

 Are the JavaScript V8 programs faster?

Program & Logs CPU secs Elapsed secs Memory KB Code B ~ CPU Load
 regex-dna 
JavaScript V85.635.63211,488373  0% 0% 0% 100%
C GNU gcc32.1532.15124,6961099  0% 0% 0% 100%
 k-nucleotide 
JavaScript V8355.20355.19332,880390  0% 1% 0% 100%
C GNU gcc53.8453.83843,1321141  0% 0% 0% 100%
 spectral-norm 
JavaScript V881.1581.1413,880311  0% 0% 0% 100%
C GNU gcc11.9511.946641139  0% 0% 0% 100%
 fasta 
JavaScript V840.0840.0822,488923  0% 0% 0% 100%
C GNU gcc5.195.193961221  0% 0% 0% 100%
 binary-trees 
JavaScript V895.6695.67188,024467  0% 0% 0% 100%
C GNU gcc12.2312.2399,528850  0% 0% 0% 100%
 n-body 
JavaScript V8200.11200.1020,3121287  0% 0% 0% 100%
C GNU gcc23.5223.524161429  0% 0% 0% 100%
 fannkuch 
JavaScript V8707.22707.198,088488  0% 0% 0% 100%
C GNU gcc47.7647.76552937  0% 0% 0% 100%
 reverse-complement 
JavaScript V839.4039.40317,988456  0% 0% 0% 100%
C GNU gcc1.381.38125,188722  0% 0% 2% 100%
 pidigits 
JavaScript V8235.04235.0421,172609  0% 0% 0% 100%
C GNU gcc2.712.711,008541  0% 0% 0% 100%
 mandelbrot
JavaScript V8Failed
 chameneos-redux
   No program

 JavaScript V8 : web-browser embedded scripting 

V8 version 1.3.11.1 [console: dumb]

Home Page: V8 JavaScript Engine

Revised BSD license