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• Xcode Instruments. What is the meaing of Virtual Memory? iPhone OS has no VM?

  - by dugla

  Hello, I've been staring at the Memory Monitor in Instruments and I am scratching my had. Why is it displaying virtual memory? iPhone OS has no virtual memory. What does it mean? My concern is that I am getting memory warnings for my iPad app but the apps real memory never exceeds 70MB and the virtual memory never exceeds 180MB? Could someone…

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• Running out of memory but not seeing excessive object allocation in Instruments

  - by Scotty Allen

  I have an iPad app that's crashing due to low memory. However, Instruments doesn't show any significant amount of memory allocated using ObjectAlloc - it stays under 1MB for the lifetime of the application. Leaks shows less than 1kB leaked over the course of the run. Memory monitor shows the free memory on the devices drop significantly with…

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• NSURLConnection shown as leaking in instruments

  - by Gyozo Kudor

  Hello another stupid question regarding leaks and also NSURLConnection. How do i release it? Is it enough if i release in the following 2 methods? (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error (void)connectionDidFinishLoading:(NSURLConnection *)connection Because in instruments it shows me the line where…

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• UIImageWriteToSavedPhotosAlbum showing memory leak with iPhone connected to Instruments

  - by user168739

  Hi, I'm using version 3.0.1 of the SDK. With the iPhone connected to Instruments I'm getting a memory leak when I call UIImageWriteToSavedPhotosAlbum. Below is my code: NSString *gnTmpStr = [NSString stringWithFormat:@"%d", count]; UIImage *ganTmpImage = [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:gnTmpStr…

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• Why Instruments report a leak?

  - by mike

  Hi, I am developing an iphone app. Instruments reported a leaked object ServiceTypes. Below is the relevant code. Does anyone have any ideas? Thanks a lot for your help. ServiceTypes *serviceTypes = [[ServiceTypes alloc] init]; if ([userConnection getServiceTypes:serviceTypes]) { if ([serviceTypes.types length] 0) { NSArray *array =…

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• Instruments (Leaks) and NSDateFormatter

  - by Cal

  When I run my iPhone app with Instruments Leaks and parse a bunch of NSDates using NSDateFormatter my memory goes up about 1mb and stays even though these NSDates should be dealloc'd after the parsing (I just discard them if they aren't new). I thought the malloc (in my heaviest stack trace below) could become part of the NSDate but I also…

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• How much memory is my iphone app using (from Simulator)

  - by Jonathan

  I know this has something to do with Instruments, but well it's kind of confusing and searching for Instruments on Google doesn't help much. I'd like to know how well my app runs, like how much memory it uses. I just don't know where to find something like: "As close as we can tell from the simulator you'll app will currently be using xx…

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• Labview + National Instruments hardware or ???

  - by NSL

  I'm in the processes of buying a new data acquisition system for my company to use for various projects. At first, it's primary purpose will be to monitor up to 20 thermocouples and control the temperature of a composites oven. However, I also plan on using it to monitor accelerometers, strain gauges, and to act as a signal generator. …

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• memory leaks in Instruments

  - by jj

  I'm getting lots of leaks in my code, but none of the leaks point to any of my code (they are all UIKit methods). I'm running 3.0. Could someone tell me how I go about figuring out where these leaks are coming from?

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• xCode 3.2.1 Alien Leak

  - by Mark

  Used code in entire project: - (void)applicationDidFinishLaunching:(UIApplication *)application { UITabBarController *tb = [[UITabBarController alloc] initWithNibName:nil bundle:nil]; [window addSubview:tb.view]; [tb release]; [window setBackgroundColor:[UIColor blackColor]]; [window makeKeyAndVisible]; } …

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• Accuracy of OpenGL ES Instrument

  - by Rob Jones

  I'm developing a game for the iPhone. I've decided that 30FPS is plenty so I've written some code that only allows the App to present the render buffer every 1/30 of a second. When I tried to verify this with Instruments I got varying information. On an iPod Touch (2009 edition, 32G) it reports 30 FPS for Core Animation Frames Per…

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• renderInContext creating memory that is not promptly released

  - by iworkinprogress

  While debugging in instruments using 'ObjectAlloc' I'm noticing 7megs of memory being allocated for the renderInContext call, but it never is released. When I comment out the renderInContext call this doesn't happen, and future renderInContext calls does not continue to increase the memory allotment. …

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• Memory Leak from Foundation & CFNetwork Library

  - by Lakshmie

  I am using instruments to resolve memory leak issues for an app in iPhone. I just wanted to know if I have to resolve the leaks coming from Foundation and CFNetwork Libraries. Specifically, the leaks are from: 1. NSCFString 2. NSConcreteData 3. General Block-3584 Since they do not directly point to…

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• Cocoa Memory Usage

  - by user288024

  I'm trying to track down some peculiar memory behavior in my Cocoa desktop app. My app does a lot of image processing using NSImage and uploads those images to a website over HTTP using NSURLConnection. After uploading several hundred images (some very large), when I run Instrument I get no…

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• Leak - GeneralBlock-3584

  - by lamicka

  When i try to check leaks of my iPhone App using Instruments, everything is just fine. Same App on actual real device shows this leak for a few times during the app launch. It is pretty non-deterministic and it happens in system libraries. I tried to google down the solution without a luck.…

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• Is there an NSCFTimer memory leak?

  - by mystify

  I tracked down a memory leak with instruments. I always end up with the information that the responsible library is Foundation. When I track that down in my code, I end up here, but there's nothing wrong with my memory management: - (void)setupTimer { // stop timer if still there …

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• Memory Warning but Small Live Bytes

  - by Kamchatka

  Hi everyone, In my application, I get a memory warning of level 1 and then 2 after repeating some action (choosing a picture + processing) several times and then a crash. The leak tool doesn't show any leak. I'm also following the Allocations tool in Instruments and my Live Bytes are…

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• Analyzing CPU usage of an iOS application

  - by Mustafa

  I'm working on an application that constructs springboard like interface (like iPhone's home screen). I have multiple pages, and each page contains many subviews. Each subview is able to detect touch and hold event. Once a touch and hold event is recognized, all the subviews start to…

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• Iphone memory leak with malloc

  - by Icky

  Hello. I have memory leak, found by instruments and it is supposed to be in this line of code: indices = malloc( sizeof(indices[0]) * totalQuads * 6); This is actually a code snippet from a tutorial, something which i think is leak-free so to say. Now I reckon, the error is…

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• Why isn't my leak detected by Xcode Intrumensts?

  - by Arlaharen

  I am trying to analyze some code of mine, looking for memory leaks. My problem is that some of my objects are leaking (at least as far as I can see), but the Leaks tool doesn't detect the leaks. My guess is that some iPhone OS object still holds pointers to my leaked objects. …

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• Memory issues - Living vs. overall -> app is killed

  - by D33

  I'm trying to check my applications memory issues in Instruments. When I load the application I play some sounds and show some animations in UIImageViews. To save some memory I load the sounds only when I need it and when I stop playing it I free it from the memory. problem…

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• TI MSP430 Interrupt source

  - by TheDelChop

  Guys, I know that when working with the MSP430F2619 and TI's CCSv4, I can get more than one interrupt to use the same interrupt handler with code that looks something like this: #pragma vector=TIMERA1_VECTOR #pragma vector=TIMERA0_VECTOR __interrupt void Timer_A (void){ …

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• How to remove NSString Related Memory Leaks?

  - by Rahul Vyas

  in my application this method shows memory leak how do i remove leak? -(void)getOneQuestion:(int)flashcardId categoryID:(int)categoryId { flashCardText = [[NSString alloc] init]; flashCardAnswer=[[NSString alloc] init]; //NSLog(@"%s %d %s", __FILE__,…

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• How to export Instrument's CPU Monitor's statistics to be usable in Excel or Numbers?

  - by unknownthreat

  I require statistics of CPU Load of my iPhone apps. I am trying to use Instrument to see the CPU Load, but all I see in Instrument program is graphs and they are not usable. I need these statistics data in numbers so that I can put all of them on graphs using Excel…

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• Generating C code from a Matlab-Simulink model for DSP C6748

  - by Juanma

  I'm trying to generate C code from a Matlab-Simulink simple model (eg.: sine wave generator with a DAC at the output). This code must be executed with Code Composer Studio for TMS320C6748 DSP (Texas Instrument C6748). Specifically, for the development board…

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