[ESS] ESS on Mac slower than R.app?

[Rodney Sparapani]

On 12/23/09 05:00 AM, baptiste auguie wrote:
> Dear list,
>
> I'm using R on Mac OS 10.5, with either R.app or ESS running with
> aquamacs. The only reason I keep R.app is because I find ESS very slow
> to run a given chunk of code -- copying and pasting into R.app is
> often faster. I'm guessing that it's not due to ESS itself being
> slower, but that there is something wrong with my setup.
>
> Say I am editing a script that is 50 lines long. I start an R process
> first, then hit C-c-C-b to evaluate the buffer content. I have to wait
> almost 10 seconds before aquamacs responds again, during which time I
> have the message "Starting evaluation..." at the bottom. If I copy
> this code and paste it into R.app, the evaluation is instantaneous for
> this particular piece of code (I don't know how to make a precise
> timing but it seems less than a second).
>
> I also tried C-c-M-b ("eval and go") and C-c C-r but the results are similar.
>
> Needless to say, I am a complete novice with emacs. I'll appreciate any tips.
>
> Best regards,
>
> baptiste
>
> ESS version 5.3.6
>
> sessionInfo()
> R version 2.10.1 RC (2009-12-06 r50690)
> i386-apple-darwin9.8.0
>
> locale:
> [1] en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8
>
> attached base packages:
> [1] grid      stats     graphics  grDevices utils     datasets  methods
> [8] base

I think if you update to the latest version of ESS this problem will go 
away.  See the previous discussion of a very similar GNU Emacs bug fix 
at https://stat.ethz.ch/pipermail/ess-bugs/2009q4/000584.html
Happy Holidays!

Rodney