[R] How to profile an R program?

[Sharpie]

Peng Yu wrote:
> 
> Is there a way to profile an R program similar to valgrind
> (valgrind.org), in the sense that I can easily see which function is
> the bottleneck of an R program?
> 

See writing R-Extensions, Section 3 "Tidying and Profiling R Code":

 
http://cran.r-project.org/doc/manuals/R-exts.html#Tidying-and-profiling-R-code


-Charlie
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