So I’m going to use malloc history. Let’s go ahead and run this — hopefully, it’ll build — and see if this happens to make any difference in terms of my memory usage. I’m going to go ahead and apply the filter again. So if you background your app or foreground it, the app life cycle events are great to, are a great way to know. Allocations profiles the heap allocations made by your app, and Leaks will check for memory leaks in a process over time. And even after all of that, we’re still not done.

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So I’m going to go ahead and use grep to just show me the lines that talk about CG image. I should figure out where these came from.


Not that type of pages. I’m going to go ahead and rebuild and wait for it to launch on the application.

We can just turn it on when our app is running because then, as we monitor it, the more we can notice the regressions as we’re debugging. As an additional bonus, if I want to use this mask over again, I can 461a the tint color on an image view, and that will just change it with a multiply, meaning that I don’t have to allocate any more memory.

I know that the operating system, not necessarily, but as a general rule, the later the VM region was created, the later in my app’s life cycle it happened. So let’s go back to the debug navigator and to the memory report. Well, one of the tools that James mentioned was heap, but that’s about objects on the heap, and I’m dealing with a virtual memory region, so that doesn’t help.


I find the By Operation tab really useful here. So now, I’m going to hand it back to Kyle, who’s going to wrap things up for akp.

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So I can’t really get anywhere further looking at the leaks output, which is unfortunate. As a jumping off point, I’d recommend just running vmmap with the summary flag against a Memgraph taken of your 416 and then follow the thread down there.

So if you leverage like the viewWillAppear and viewDidDisappear code or callbacks, you can keep your memory footprint smaller.

If I reload my images there, I’m saving memory when in the background, and I’m keeping the same fidelity when the user comes back. Well, that’s both kind of good news and bad news. Just using the new API, I’m now getting a 1-byte-per-pixel image. UIViewController methods are great for, like, tab controllers or navigation controllers because you’re going to have multiple view controllers, but only 1 of them is on screen at once.

And the first — actually, let me bring this up a little bit — is to look for leaks. Then, you can pass that Memgraph to the command-line tool instead of the target [inaudible] and you’re good to go. I should probably attach this and the Memgraph to a bug report and get someone else to look at it.

Similarly, if I’m in a nav controller or a tab controller, my view controllers can unload their images when they disappear. Now, those are always going to count towards dirty memory. There’s a load, a decode, and a render phase. And then, finally, I pipe that into a super simple awk script to sum up the dirty column and then print it out as the number of dirty pages at the end.


I, that, I don’t think that’s really the problem here. There’s a huge range. It gives you a virtual memory system profile and will show you things like page cache hits and page zero fills for the VM.

This is not what we want to do in a memory-constrained environment. Related Forums The place where Electrical professionals meet. And if I wanted to, I could go through and expand every single one of these nodes and look at the details for each of them, but that’s going to take a while, and it’s kind of tedious.

Well, the heap tool provides all sorts of information about object allocations in the process heap.

An error occurred when aol your query. So let’s see what we can do. So we really got to be careful about memory warnings in general.

So when faced with a memory problem, which tool do you pick? And what that does is it prints out each frame on its own line, makes it a lot more human readable.