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iphoneiosobjective-cmemory-managementios7

Live Bytes in iOS 7 increased by 59x approx. as compared to iOS 6

I have an app for iOS 6.x. I have tested memory allocation for this app couple of times using Instruments. Almost every time Live Bytes right after the app launch were 872 KBs approx.

Then I ran this app on iOS 7 using Xcode 5-DP5 without doing ANY changes in the code. I saw the app was very slow as compared to iOS 6. I ran the Memory Allocations in Instruments just to find some dropping dead results. Live bytes right after the app launch: 49.8 MBs, which approximately 59 times. Please see the screens if that might be of any help:

iOS 7

iOS 6

AFAIK nothing specific to memory has been mentioned in the iOS 7 docs. Moreover my app is ARC enabled. Does anyone know about this huge increase in live bytes on iOS 7? Is there a specific reason on iOS 7 for this? Or is it just because of beta release?

Solution

  • This was due to the Developer release of the SDK. It got fixed when the GM seed version came in.