I ran R on an AMD Athlon 64 with a 32 bit Linux (by accident, I moved
the hard disk from another machine). Now, after install 64 bit Linux and
64 bit R, I am finding some of my R tests are quite a bit slower, I
think because memory demands cause a lot of swap. Does anyone know if
extra memory usage would be mainly because of R itself, or is there a
lot of extra memory demand because of the OS, windowing system, and
other apps?

Paul Gilbert

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