Memory usage
Memory usage
- Subject: Memory usage
- From: Michael Becker <email@hidden>
- Date: Fri, 25 Mar 2005 00:39:37 +0100
Hi!
I am not sure if this is the appropriate list to post this, but I am
sure people here can answer my question. I have an application that
reads out and displays the iPhoto library. After selecting one of the
albums, the images of this album are read from disk and displayed. So
far, everything works fine, but I just checked my memory usage with the
command-line tool "top".
I must admit that I am in no ways a memory expert, so there may be
wrong assumptions here. What worries me the most is, that unlike
iPhoto, my app's stats grow worse over time. That means, if I change
between the albums, each of the numbers in top grows. Although I am
properly releasing my objects, it seems as memory usage increases.
In my list, every running app uses at most about 400 REGS (memory
regions). But my app (after some album switching) easily reaches more
than 1500 of those.
Now here is the question: Why does my app increase in memory usage even
though I properly facilitate Cocoa's memory management? Say, I have 100
images in the current album view. When I switch the album, those 100
images are released, then the new album's images are read from disk. If
the new album only has 10 images, shouldn't that drop my mem-usage?
I'm sorry if I am asking stupid questions, but as I mentioned before, I
am new to this stuff and a little scared of the moment when a user uses
my app for more than 30 minutes :-)
Regards,
Michael
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