Good afternoon, This is possibly a windows only bug, definitely of comparatively low importance - but for the sake of completeness here we go. I've searched http://bugs.R-project.org/ etc., but can find no mention.
For RGui.exe, the CPU usage goes to 100% for certain dialog boxes for the duration that the dialog box is visible, e.g. * check CPU usage is low * On the RGui.exe menu chose File / Change dir... * the CPU usage goes to 100% * hit OK * the CPU usage goes back down again This also occurs when I incant Help / Apropos or Help / Search help... or at the "command prompt" > winDialogString("hello", "nonsense") Note the latter also applies to R.exe inside a cmd window. I've checked this with a few windows machines for 2.6.2 & 2.6.1 - including with --vanilla. This machine here has the following... > sessionInfo() R version 2.6.2 (2008-02-08) i386-pc-mingw32 locale: LC_COLLATE=English_Ireland.1252;LC_CTYPE=English_Ireland.1252;LC_MONETARY=English_Ireland.1252;LC_NUMERIC=C;LC_TIME=English_Ireland.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major 2 minor 6.2 year 2008 month 02 day 08 svn rev 44383 language R version.string R version 2.6.2 (2008-02-08) I am not familiar with the R sources, so the following should be taken with a large grain of salt... to my uninitiated eyes it appears to be something to do with askstring() in src\extra\graphapp\dialogs.c or possibly handle_message_dialog() - I'm afraid I have never programmed windows at a low level so I'm not sure what's going on here... I am of course available to help pin this down - but unfortunately I don't have a development environment here. Best Regards, Sean O'Riordain Dublin, Ireland not affiliated... seanpor A T acm D ot org ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel