On Sun, 6 Sep 2009, Charles Geyer wrote:
Does --with-valgrind-instrumentation=2 slow down R when valgrind or gctorture are not in use? I am thinking of compiling the R that the whole department uses for research and teachin with --with-valgrind-instrumentation=2. Is that a good idea or a bad idea?
It is a slightly bad idea: it does add extra code in memory.c that would always be called.
This only affects R.bin (or libR.so if you use the already slower shared-library version), so you can so as I do and simply use a different version of R.bin.
There is a similar issue with memory profiling. -- Brian D. Ripley, rip...@stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
