title: iPhone: How much memory usage is too much?
body: <p>This is a pretty weird question I guess, but I've never really had to deal with memory allocation before so now I'm really paranoid about using too much of it or forgetting to deallocate stuff. I've found the extremely useful memory leak tool (and am quite proud to see that, so far at least, I'm not losing anything that way) and also the Allocations tool which I assume is for measuring how much memory is used up at any given point of application runtime. However, I'm not really certain how much memory I <em>should</em> be using up. </p>
  
  <p>I think there's a good 256M in my iPod touch, not too sure, but I don't know how much of that is taken up by system processes, nor really how much I can safely use before I start running into low memory issues. At the moment my program's taking up around 4 MB, which seems pretty high for what it's doing but I guess at least some of that is system processes that can't be stopped, or high-maintenance stuff like the large graphical backdrop I'm using.</p>
  
  <p>In short, can someone give me a good benchmark figure that my applications should aim for in terms of the maximum amount of memory used at any given time? Figures for iPhone 4 and iPad would be nice too, if these differ significantly.</p>
  
  <p>-Ash</p>