[Aquamacs-devel] ESS and time running R functions

[Paul Rathouz]

Hi All -- I am running R withing ESS withing Aquamac. I am running a 
simple program which defines two functions and tests them.  It looks like 
this:

--------------
starttime <- proc.time()
...
proc.time()-starttime
-------------

When I select this code and then run it in ESS using the command 
ess-eval-region, the result in the R window is:

> proc.time()-starttime
    user  system elapsed
   0.059   0.005  12.149

(the last number is the actual real time I waited for the code to 
execute).
When I run the program in batch mode from a terminal window (using R CMD 
BATCH...), the result is:

> proc.time()
    user  system elapsed
   0.839   0.054   0.890

Does anyone know how come this executes so much more slowly in ESS in 
Aquamacs? I vaguely remember this issue arising before, but it was a long 
time ago and much appears to have changed in Aquamacs since then.

Thanks much -- pr

==========================================================================
Paul Rathouz, Assoc. Professor of Biostatistics           ph 773-834-1970
Dept. of Health Studies, Rm. W-264                       fax 773-702-1979
University of Chicago                               prathouz at uchicago.edu
5841 S. Maryland Ave. MC 2007
Chicago, IL 60637
=========================================================================