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Fixed in Unity 5.2.0

Votes

0

Found in

4.6.6f2

Issue ID

708937

Regression

No

[IL2CPP] Queue.Dequeue and BinaryReader.ReadInt32 significantly slower than on Mono

IL2CPP

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Priority: 7Not yet prioritized for a release

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Severity: 2Core functionality majorly impacted

To Reproduce:

1. Deploy the attached project (with debug symbols on) to an device.
2. Run the app with time profiler in Instruments and observe that some functions are significantly slower with Il2CPP than with Mono. On iPad mini 2 (iOS 8.4) (ARMv7):

IL2CPP:

Running Time Symbol Name
1160.0ms 20.9% BinaryReader_ReadInt32_m4980

Running Time Symbol Name
328.0ms Queue_1_Dequeue_m12_gshared

Mono:

Running Time Symbol Name
139.0ms m_System_Collections_Generic_Queue_1_int_Dequeue

Running Time Symbol Name
263.0ms m_System_IO_BinaryReader_ReadInt32

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