Le Tue, Dec 08, 2009 at 09:06:56AM -0700, Gary Hodges a écrit : > Gary Hodges wrote: >> Hi. Last week I updated from 32 bit etch to 32 bit lenny on an AMD SMP >> machine. I first cloned the system disk to an identical drive, and >> updated the cloned drive. I still have the etch install untouched on >> the previous drive, which has allowed me to do some testing. After the >> update R has slowed down significantly. A user brought this to my >> attention, and at this point we have only tested one script (multiple >> times, different days).
> Update: We just tried something a little different. My colleague's > script writes output to the screen. I suggested writing to pdf files > instead and it ran much faster; comparable to the speeds on etch. So at > this point I'm guessing this is not a R issue per se, but an issue with > graphics. Dear Gary, I think that between Etch and Lenny, R switched its default rendering system to use the Cairo library, which provides anti-aliasing and other improvements. This rendering system is slower than the previous system, Xlib. Maybe you can try your comparison using ‘type = "Xlib"’ when you open X11() or png() devices. Best regards, -- Charles Plessy Tsurumi, Kanagawa, Japan _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian
