A couple of observations and request for education (mine)!
First, Merry Christmas & Happy New Year to 1 & all!!
I've been wondering the same thing for a little while. I know browsers will cache stuff (I haven't yet found the preferences page where I can control cache behaviour for Safari - any ideas?) but I do expect memory usage to drop a fair amount once I close a tab or window that contained video etc!
It's also slightly (very) amusing to think that I'm having memory leaks whilst hunting for info on memory leaks... (is that because I'm a Brit, human, or just me?! ;-))
I did spot the following:
They WERE hunting memory leaks - last update for the site at the given URL was in 2005!
Can somebody enlighten me on exactly what a memory leak is, in the context of OS X?
Lastly, I'm struggling to understand why a 64 bit app uses twice the memory of a 32 bit app? I can see that in some cases it *might* use *some* extra memory, but not twice as much. A 64 bit app will have instructions that are 64 bits long, but given that a 64 bit processor can do some things in 1 instruction what a 32 bit processor would need 2, 3 or even 4 instructions to do, the 1:2 ratio doesn't hold. Further, what ever data structures are being used, they'll use almost exactly the same amount of memory as a 32 bit app - storing a single character of text (8 bits) does not use up a 32 bit word, or a 64 bit word - compilers are smart when it comes to this sort of thing these days!
So, can somebody point out what I'm missing?
Cheers
Martin