[R-SIG-Mac] R 2.2.1/Cocoa - internal editor cpu/mem leaks; external editor call doesn't work
jbthiel at neticare.com
Fri Feb 17 04:45:48 CET 2006
R 2.2.1 on OS X 10.4.3 (also seen on OS X 10.3.9)
via the Cocoa GUI:
* The R internal editor rails the cpu to 100% when open, even when it
is just sitting in the background -- probably is using polling.
* There appears to be a memory leak with the internal editor, whereby
every time the editor is loaded and exited, the R app consumes at
least 1.2MB of additional memory, and fails to release it. A simple
close the edit window
will apparently increase the R real memory allocation without bound.
* Possibly related to the above, as the internal editor is invoked
repeatedly over time, it takes increasingly longer to load the edit
* We have also observed a condition where simply mouse-click
switching between the Rconsole window and another R window containing
a displayed graph - but not actually doing anything other than
clicking back and forth, increases the R real memory usage by
10-20KB on each series of clicks.
* Editing via external editor does not seem to work. The fix() call
invokes the external application, but returns immediately. The
external editor starts up fine, and sees the tempfile, but any
editing done to it is never seen (since the fix() has already
returned). Tested with editors like TextWrangler, Smultron, TextEdit.
These bugs make it problematic to run long R sessions with heavy
editing, as the R session starts to drag more and more (and can
induce other application (possibly even system) crashes as other apps
fail to run in the diminishing memory space).
Thanks for your great work on the Cocoa R, which is extremely useful
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