Why would Xcode show MUCH more memory use than Instruments for SceneKit app?

Why would Xcode show MUCH more memory use than Instruments for SceneKit app?

By : Dread_Knought
Date : October 18 2020, 08:10 PM
I wish this helpful for you I'm trying to debug why our SceneKit-based app is using so much memory but Xcode and Instruments / Allocations seem to have very different values for the amount of memory being used. When I look in Xcode I see something like 600 MB but when I transfer the same running session over to Instruments / Allocations, I see a very different number for persistent bytes, like 150 MB. ,
Which one is correct?
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XCode and Instruments: How to get the app memory peak

XCode and Instruments: How to get the app memory peak

By : LucasA618
Date : March 29 2020, 07:55 AM
like below fixes the issue Use the "Allocations" performance tool by selecting Run | Run with Performance Tool | Allocations in Xcode. This will show you everything that your app allocates including items in libxml2. You may not to see exact line numbers of memory allocations in the library, but you will be able to see where the majority of your allocations are happening.
Xcode 4 & Instruments for Memory Leaks

Xcode 4 & Instruments for Memory Leaks

By : user3429440
Date : March 29 2020, 07:55 AM
I wish did fix the issue. You may want to take a look Apple's official Instruments Quick Start Guide. Hope this helps.
Xcode Instruments using lots of memory.

Xcode Instruments using lots of memory.

By : user3473760
Date : March 29 2020, 07:55 AM
Any of those help instruments consumes a lot of memory.
depending on what you are recording, you may reduce its memory usage. for example, you can often specify what (or what not) to record, or lower sampling frequencies(if applicable).
Instruments show memory leak - Xcode 5 / iOS7

Instruments show memory leak - Xcode 5 / iOS7

By : Julius Berger
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I had the same issue with Xcode 5 on iOS 7. After some experimentation I noticed that Instruments does not show a mem leak when running against the iOS 6.1 simulator or against a device (iPhone 5s) running iOS 7. Based on these I can only conclude that this is a false positive and a bug in the iOS 7 simulator.
EDIT: This issue no longer occurs after I updated to Xcode 5.0.1 and OS X Mavericks (I'm guessing it's the first that fixed it but can't tell for sure).
Out of memory in XCode, but not in Instruments

Out of memory in XCode, but not in Instruments

By : ha phuong
Date : March 29 2020, 07:55 AM
hope this fix your issue I would look at the two schemes and make sure the settings are the same. It's possible that the profiler is using a non-debug configuration and "Run" is using debug configuration.
I'd pay special attention to the "Enable Zombie Objects" in the "Diagnostics" tab of the "Run" configuration, as that can take up memory keeping track of all of the deallocated objects. Zombies are a wonderful diagnostic tool, but you want to turn that off in order to ensure you reclaim all of the memory associated with the deallocated objects.
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