To answer the whys, profiling memory usage is especially important for iOS apps because iPhones and iPads have much less RAM than Macs. The iPhone 4 has 512 MB of RAM, but earlier versions had 256 or 128 MB. Factor in the RAM the OS uses and multitasking, and your app doesn’t have much RAM … Read more
In GNU/Linux I use Intel’s PCM to monitor CPU utilization. I’m not sure if this works fine on OSX, but as far as I know the source-code is including the MacMSRDriver directory. I have no any OSX device, never test it anyway. In case this source compiled on your device, Just run: pcm.x -r — … Read more
Magenta overlays are caused by subpixel misalignment, while yellow overlays are caused by stretching. Prior to iOS 4, Instruments used magenta for both.
instruments -t /Developer/Platforms/iPhoneOS.platform/Developer/Library/Instruments/\ PlugIns/AutomationInstrument.bundle/Contents/Resources/Automation.tracetemplate \ <full_path_to_application> -e UIASCRIPT <path_to_script.js> \ -e UIARESULTSPATH <output_results_path> for xcode >= 4.5 instruments -t /Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/PlugIns/\ AutomationInstrument.bundle/Contents/Resources/Automation.tracetemplate \ <full_path_to_application> -e UIASCRIPT <path_to_script.js> \ -e UIARESULTSPATH <output_results_path> for xcode >= 6.1 instruments -w <device ID> -t \ /Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/PlugIns/\ AutomationInstrument.xrplugin/Contents/Resources/Automation.tracetemplate \ <full_path_to_application> -e UIASCRIPT <path_to_script.js> \ -e UIARESULTSPATH <output_results_path> There a few important … Read more
The solution for me was to make sure that my Profile scheme was using the “debug” and not “release” build configuration. In Xcode 4 select Product/Edit Scheme from the top menu then click on the “profile” button on the left. On the “info” pane you will see a setting for Build Configuration- set that to … Read more
Firefox Profiler Understanding Firefox Profiler The Firefox Profiler has more current documentation available at profiler.firefox.com/docs/. However the following could have some potentially useful information for Gecko-specific problems. You can check out some frequently asked questions about the Firefox Profilers. Reporting a Performance Problem has a step-by-step guide for obtaining a profile when requested by Firefox … Read more
You could try installing OS X in a virtual machine, and having two instances of the virtual machine running simultaneously. I know that might not be what you are looking for, but it should work.
You can use the Allocations instrument to track the lifecycle of your objects. If you use the “Allocations” template, it is configured to record malloc and free events. You may want to configure it to also record retain, release, and autorelease events by turning on the “Record reference counts” checkbox in the Allocations instrument settings: … Read more
I was hitting the same issue for a week. Since today, I change the Xcode Version back to Xcode 9.2 – and the problem was resolved. It seems like this is a bug of Xcode 9.3, I just filed an issue to Apple yesterday. No reply has been received.
I Changed my project settings to not include the dSYM file while building: Changing it to include the dSYM File helped the profiler desymbolize the symbols and fixed my issue: