instruments

Instruments CoreAnimation's Screenshots Why can't I find "debug options" in Xcode 9.3's instruments? Can anyone solve this problem? "The Core Animation instrument and template have been deprecated in Instruments. The functionality previously under "Debug Options" has moved to Xcode, under "Debug > View Debugging." Source: Xcode Release Notes 来源： https://stackoverflow.com/questions/49912480/where-is-debug-options-in-instruments

I am looking to ensure my app does not consume too much memory on what are still fairly resource constrained devices. Several days ago I was using Instruments to determine how much memory my app was using and I was getting around 4-8 megabytes for Live Bytes . Today I run Instruments again and I am up around 30-35 megabytes for Live Bytes. I don't believe I have made any significant changes to my code between these two times. My app uses an MKMapView with a custom tile overlay. I put off updating XCode for a fairly long time, and so I suspect that the difference may be that my iOS simulator

I am Profiling an Application with Instruments. The profiling is done using Allocations Tool in two ways: By choosing Directly the Allocations when I run the App for Profiling By Choosing Leaks when I run the App for Profiling. In both the cases , I had Allocations tool enabled for testing. But surprisingly , I had two different kind of Out put for Allocations at these instances. Are they supposed to behave differently? or this is a problem with Instruments. The time I Profile the with Leaks Tool: In Allocations Graph: 1. I get lot of Peaks in Graph, The Live bytes and overall bytes are same.

My app has been crashing a lot, for reasons that I'm struggling to understand. It's not so much that it's crashing -- it's getting killed by an outside "Unknown" process: Processes Name <UUID> rpages recent_max [reason] (state) test-app <....> 167111 167111 [per-process-limit] (frontmost) (resume) I could understand that if I were allocating a huge block of memory, or a zillion smaller blocks, but I'm not doing anything that outrageous. Profiling with Instruments tells me that the app uses only around 8 MB, occasionally spiking up to 13 MB or so when I load some large content. There are no

I work with OpenAL to play sounds in my app. When I test it using Instruments tool, it finds a leak: LeakedObject = GeneralBlock-512 Size = 512 Bytes Responsible Library = AudioToolbox Responsible Frame = AU3DMixerEmbeddedInputElement::Initialize() Stack trace: 0 libSystem.B.dylib malloc 1 libstdc++.6.dylib operator new(unsigned long) 2 libstdc++.6.dylib operator new[](unsigned long) 3 AudioToolbox AU3DMixerEmbeddedInputElement::Initialize() 4 AudioToolbox AU3DMixerEmbedded::SetProperty(unsigned long, unsigned long, unsigned long, void const*, unsigned long) 5 AudioToolbox AUBase:

Can Instruments be used as a replacement for valgrind If one wants to check for memory leaks using instruments can it be used from the terminal? miku Instruments has a command line interface: $ instruments -h Example usage: $ instruments -t mytemplate -a myapp.app For leaks, try the Leaks.tracetemplate . To see all available templates, use -s . There is another executable, just called leaks . You can inspect any running application by giving leaks its PID: $ ps aux | grep "[b]ash" | awk '{print $2}' 620 $ leaks 620 leaks Report Version: 2.0 Process: bash [620] Path: /bin/bash Load Address:

虽然iOS 5.0版本之后加入了ARC机制，由于相互引用关系比较复杂时，内存泄露还是可能存在。所以了解原理很重要。 这里讲述在没有ARC的情况下，如何使用Instruments来查找程序中的内存泄露，以及 NSZombieEnabled设置的使用。 本文假设你已经比较熟悉Obj-C的内存管理机制。 实验的开发环境：XCode 4.5.2 1、运行Demo。 先下载一个实现准备好的内存泄露的Demo吧： leak app 下载下来，打开运行，程序是一个寿司的列表，列出各种寿司卷。试着选择里面的几行，应该是选第二行的时候就崩溃了。崩溃截图： 在崩溃的地方断住了，知道crash的地方了，但是不知道具体crash的原因。 2、设置NSZombieEnabled 这是一个 “EXC_BAD_ACCESS”错误。我们打开XCode的选项：“NSZombieEnabled” 。在crash时可能会给你更多的一些提示信息。 设置步骤：1 2：勾上红色框里的 运行，按刚才的操作选中其中的cell。再次crash，这次在output窗口会看到多了一项错误信息： 2012-11-28 13:22:08.911 PropMemFun[2132:11303] *** -[CFString respondsToSelector:]: message sent to deallocated instance

Is there any way to compare trace files saved with Instruments. How can I have a comparison of any way regarding consecutive realise builds of the app. Lest's say I release iPhone app version 1.0 then in 2 months 1.1. What's is the best have to have a profiling comparison in terms of memory and time? You can save trace files. But to make is reasonable to interpret those results at a future date, it's useful to insert "flags" in your trace, to mark significant events, so that you can tell what the app was doing at notable points in the trace. In the past, I'd suggest the inclusion of flags

When I try to run a UI Automation script on iOS 5 devices I am getting the following error: "An error occurred while trying to run the script." The same script is running perfectly in the simulator or on an iOS 4.3.3 device. How can I solve this problem? user1751511 This should fix this issue: sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer On devices you should explicity allow to run UI Automation scripts. Go to Settings -> Developer Switch Enable UI Automation to on After turning the option on, the error went away and everything worked as expected. I would try closing