Hi, i've developed an iPhone program which is kind of an image manipulation program: The user get an UIImagePickerController and selects an image. Then the program does some heavy calculating in a new thread (for responsiveness of the application). The thread has, of course, its own autorelease pool. When calculation is done, the seper...
I a profiling my iPhone application on target, and according to Instruments 65% of the time is spent in mach_msg_trap. I have a background thread that runs-forever and send results back to the main thread using performSelectorOnMainThread:withObject:waitUntilDone:, aproximately every 2 seconds. I am not waiting until done. // Fredrik ...
Hi I have a problem running one application on the iPhone from Xcode (or Instruments). When I try to run the app I get the error message Failed to upload XXX.app in the bottom left corner of Xcode. The strange thing is it actually uploaded the app to the iPhone but it doesn't start it (after this I can start the app by hand on the iPhon...
Hi guys, I am profiling my iPhone application with the 'Activity Monitor' Instrument. When I use UITableViews and scroll through them, I see the memory usage of my application go up all the time while I scroll. When I return to the previous view and the UITableViewController gets deallocated, the memory usage goes down a bit, but not to...
Hi, I'd like to measure the performance of code on the iPhone that runs only once, so Instrument's CPU sampler tool is of limited use, because it needs many iterations to collect enough samples. Is there a tool that I can use that times each function on each invocation? That does call tracing instead of statistical sampling? Regards, ...
hello all, is there any good tutorial/link on how to use instruments while debugging, especially for memory leaks? Thanks ...
I have two projects - one with a static library target and a unit test target - one with an application target that is dependent on the static library and it's own unit test target In the static library project, I can only do a 'Build' or 'Build and Analyze'. If I build the unit test target, the tests are run, but there does not seem t...
When you check gather leaked memory contents in the Leaks instrument what does this do? I have a troublesome leak and thought maybe this "memory content" might be useful in tracking it down...but I can't find it!?! ...
Hello, I have almost developed my iPhone application. Now I want to test it for memory leaks and fix it. I want to know how to find bugs and leaks and locate them in code and then fix it.. So if anyone can provide me a good tutorial or example ?? Thanks ...
Hello all , I have developed my iPhone application and now I am testing it with instruments to find memory leakages . I have my appDelegate class in which I am fetching data from web service and then parse it then store it in an array.. Here is my applicationDidFinishLaunching method : UIApplication* app = [UIApplication sharedAppl...
Hi, I'm using Xcode on OSX to develop command line C applications. I would also like to use Instruments to profile and find memory leaks. However, I couldn't find a way to display the console when launching the application from within Instruments. I'm also unable to attach to a running command line process (it exits with an error): He...
I'm trying to be a good programmer and fix the leaks in my iPhone app... I can't understand though what the Stack Trace in Leaks is trying to tell me. There are multi coloured stack calls and I guess each color means something, but what? Also .. in the screenshot below all calls in the stack trace are not from any of my classes, does th...
Hey Everyone, I am running into some serious memory leaks in one of my applications I am building. I have a UINavigatonController that is inside a UITabBarview. Inside the NavView is a MKMap view. When you click an accessory button on a callout a detail view is loaded. In that detail view I am trying to populate a table from a plist usi...
I've reached the stage where it's time to start tracking down memory leaks and, to my dismay, Instruments is giving me very little to go on (other than the fact that I definitely have leaks). My stack trace contains no information other than memory addresses. Since I'm working on a new project and I've transitioned to version 3.2.1...
I'm trying to kill all memory leaks in my iPhone 3.0 application. CLANG builds with all lights green so now I'm analyzing with Instruments. This is easier said then done, since it is indicating hundreds of 16 byte leaks after just a few minutes of using the app. It seams to be mainly in UIKit, and the common part is that the end of the...
BOOL continueLoop; CGPoint thePoint; while(continueLoop != NO) { continueLoop = NO; thePoint = [self generateRandomLocation]; NSMutableArray *blocks = [self getBlocksForX:thePoint.x]; for(BlueBlock *block in blocks) { if(block.getBlockLocationY == thePoint.y) { continueLoop = YES; } } [blocks release]; } This cause...
Hi there, I'm trying to monitor my core data usage but all the Core Data instruments are greyed out in Instruments. It's also not available from the "Run with Performance Tool" in Xcode. It says that the Core Data instruments are for the Mac and it's not available on the iPhone, but I've heard people talking about using it, and it's men...
I don't want to compile my app every-time I want to test it in instruments is there any other program or way of utilizing this benefit without having to compile every-time? ...
Hi all, I am in memory-leak cleanup mode on my latest app, and have come across something that I am unable to solve. the following method has been cleaned up except for 1 nagging issue. Instruments tells me that my NSMutableArray called itemsToKeep is leaking memory, at the point that I am creating the object. Any ideas on why I am leak...
I recently had an app rejected from the app store because of Low Memory Exception. The app doesn't leak memory, but its base memory footprint seems to be too high. According to the crash logs sent by apple, it was taking about 14000 pages in the memory (mostly due to huge textures). There were 2 strange things though: I tested it on 5 ...