I've got an iMac with 8GB of memory.
From time to time, Mathematica grinds to a halt in performing certain functions. For example, rotating complex Graphics3D output, or more recently, an notebook taking forever to reformat itself when it was resized.
I've noticed in the Mac's Activity Monitor that I am frequently up towards 7.8GB of memory used, with the Mathematica app taking up a hefty proportion of this.
Is there any way within Mathematica to determine if a given slowdown is indeed a result of a shortage of memory?