koobas.hobune.stream
How to pin-point memory leak?
Hi, I'm having a memory leak issue and need help! My game is a single scene game and it load itself once the level is ended. On editor and iMac it has no problem. On Android (Shield TV) it has no problem.
On Mac Mini however, it crashes after reloading the scene about ~40 times. And Weird thing is, the screen(Camera) is corrupted, but the game runs as expected behind the 'crashed' screen. UIs that are set to ScreenSpace-Overlay is drawn correctly. Other screen area where Unity camera draws are corrupted and turn into something like 'normal map texture'(rgb gradation). And Unity doesn't throw any Error/warning or whatever.
Since the game is running behind, game can be played 'blind'. So after finishing levels and reloading 4~7 times, then the Unity Crashes, flushing logs below :
Candy Planet_1.5.7_171129_RELEASE(2037,0xa537c1c0) malloc: *** mach_vm_map(size=8392704) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
DynamicHeapAllocator allocation probe 1 failed - Could not get memory for large allocation 8388608.
Candy Planet_1.5.7_171129_RELEASE(2037,0xa537c1c0) malloc: *** mach_vm_map(size=8392704) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
DynamicHeapAllocator allocation probe 2 failed - Could not get memory for large allocation 8388608.
Candy Planet_1.5.7_171129_RELEASE(2037,0xa537c1c0) malloc: *** mach_vm_map(size=8392704) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
DynamicHeapAllocator allocation probe 3 failed - Could not get memory for large allocation 8388608.
Candy Planet_1.5.7_171129_RELEASE(2037,0xa537c1c0) malloc: *** mach_vm_map(size=8392704) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
DynamicHeapAllocator allocation probe 4 failed - Could not get memory for large allocation 8388608.
Candy Planet_1.5.7_171129_RELEASE(2037,0xa537c1c0) malloc: *** mach_vm_map(size=8392704) failed (error code=3)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
DynamicHeapAllocator out of memory - Could not get memory for large allocation 8388608!
Could not allocate memory: System out of memory!
Trying to allocate: 8388608B with 16 alignment. MemoryLabel: Physics
Allocation happend at: Line:173 in /Users/builduser/buildslave/unity/build/Runtime/Dynamics/PhysicsManager.cpp
Memory overview
[ ALLOC_DEFAULT ] used: 107527712B | peak: 0B | reserved: 122249024B
[ ALLOC_TEMP_JOB ] used: 0B | peak: 0B | reserved: 12582912B
[ ALLOC_TEMP_BACKGROUND_JOB ] used: 0B | peak: 0B | reserved: 1048576B
[ ALLOC_GFX ] used: 4177960B | peak: 0B | reserved: 7340032B
[ ALLOC_CACHEOBJECTS ] used: 105126984B | peak: 0B | reserved: 113746476B
[ ALLOC_TYPETREE ] used: 0B | peak: 0B | reserved: 0B
[ ALLOC_PROFILER ] used: 4105940B | peak: 0B | reserved: 8388608B
[ ALLOC_TEMP_THREAD ] used: 51920B | peak: 0B | reserved: 3440640B
Could not allocate memory: System out of memory!
Trying to allocate: 8388608B with 16 alignment. MemoryLabel: Physics
Allocation happend at: Line:173 in /Users/builduser/buildslave/unity/build/Runtime/Dynamics/PhysicsManager.cpp
Memory overview
[ ALLOC_DEFAULT ] used: 107527712B | peak: 0B | reserved: 122249024B
[ ALLOC_TEMP_JOB ] used: 0B | peak: 0B | reserved: 12582912B
[ ALLOC_TEMP_BACKGROUND_JOB ] used: 0B | peak: 0B | reserved: 1048576B
[ ALLOC_GFX ] used: 4177960B | peak: 0B | reserved: 7340032B
[ ALLOC_CACHEOBJECTS ] used: 105126984B | peak: 0B | reserved: 113746476B
[ ALLOC_TYPETREE ] used: 0B | peak: 0B | reserved: 0B
[ ALLOC_PROFILER ] used: 4105940B | peak: 0B | reserved: 8388608B
[ ALLOC_TEMP_THREAD ] used: 51920B | peak: 0B | reserved: 3440640B
(Filename: /Users/builduser/buildslave/unity/build/Runtime/Allocator/MemoryManager.cpp Line: 1053)
Receiving unhandled NULL exception
Obtained 35 stack frames.
#0 0x00000000440816 in DualThreadAllocator<DynamicHeapAllocator<LowLevelAllocator> >::GetRequestedPtrSize(void const*) const
#1 0x000000004518b2 in MemoryManager::RegisterAllocation(void*, unsigned long, MemLabelId const&, char const*, char const*, int)
#2 0x0000000044eff7 in MemoryManager::Allocate(unsigned long, unsigned long, MemLabelId const&, AllocateOptions, char const*, int)
#3 0x0000000044e565 in malloc_internal(unsigned long, unsigned long, MemLabelId const&, AllocateOptions, char const*, int)
#4 0x00000000c95683 in NovodexAllocator::allocate(unsigned long, char const*, char const*, int)
#5 0x00000001a17549 in physx::shdfnd::Foundation::AlignCheckAllocator::allocate(unsigned long, char const*, char const*, int)
#6 0x00000001a168cf in physx::shdfnd::Allocator::allocate(unsigned long, char const*, int)
#7 0x000000018a27ff in physx::PxsAABBManager::setDynamicAABBData(unsigned int, physx::PxcAABBDataDynamic const&)
#8 0x000000018837bf in physx::Sc::ShapeSim::onGeometryChange()
#9 0x00000001865808 in physx::Sc::RigidCore::onShapeChange(physx::Sc::ShapeCore&, physx::PxFlags<physx::Sc::ShapeChangeNotifyFlag::Enum, unsigned int>, physx::PxFlags<physx::PxShapeFlag::Enum, unsigned char>)
#10 0x0000000182206a in physx::NpShape::setGeometry(physx::PxGeometry const&)
#11 0x00000000c5b4e5 in BoxCollider::ScaleChanged()
#12 0x00000000c836a9 in PhysicsManager::SyncTransforms()
#13 0x00000000c96ba0 in PhysicsModule::AutoSyncTransforms()
#14 0x00000000e3328e in ParticleSystem::BeginUpdateAll()
#15 0x00000000e33e32 in ParticleSystem::InitializeClass()::PreLateUpdateParticleSystemBeginUpdateAllRegistrator::Forward()
#16 0x000000009d0c8e in PlayerLoop()
#17 0x0000000035f0e6 in -[PlayerAppDelegate UpdatePlayer]
#18 0x00000095e1e336 in __NSFireTimer
#19 0x000000946c8b96 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__
#20 0x000000946c86ad in __CFRunLoopDoTimer
#21 0x000000946c814e in __CFRunLoopDoTimers
#22 0x000000946bfb10 in __CFRunLoopRun
#23 0x000000946bf01a in CFRunLoopRunSpecific
#24 0x000000946bee0b in CFRunLoopRunInMode
#25 0x00000093dbf396 in RunCurrentEventLoopInMode
#26 0x00000093dbf182 in ReceiveNextEventCommon
#27 0x00000093dbef7b in _BlockUntilNextEventMatchingListInModeWithFilter
#28 0x0000009257d2d9 in _DPSNextEvent
#29 0x00000092ce2c0b in -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
#30 0x00000092ce2535 in -[NSApplication(NSEvent) nextEventMatchingMask:untilDate:inMode:dequeue:]
#31 0x00000092571f7a in -[NSApplication run]
#32 0x0000009253efe2 in NSApplicationMain
#33 0x0000000035ea07 in PlayerMain(int, char const**)
#34 0x0000009f7b3395 in start
Stacktrace:
Native stacktrace:
0 libsystem_kernel.dylib 0x9f8e2496 __pthread_kill + 10
1 libsystem_c.dylib 0x9f842a34 abort + 141
2 Candy Planet_1.5.7_171129_RELEASE 0x00d04c59 _Z12HandleSignaliP9__siginfoPv + 41
3 libmono.0.dylib 0x0d2c4404 mono_chain_signal + 69
4 libmono.0.dylib 0x0d21cff8 mono_sigsegv_signal_handler + 231
5 libsystem_platform.dylib 0x9f9bce5b _sigtramp + 43
6 ??? 0xffffffff 0x0 + 4294967295
7 Candy Planet_1.5.7_171129_RELEASE 0x004518b2 _ZN13MemoryManager18RegisterAllocationEPvmRK10MemLabelIdPKcS5_i + 98
8 Candy Planet_1.5.7_171129_RELEASE 0x0044eff7 _ZN13MemoryManager8AllocateEmmRK10MemLabelId15AllocateOptionsPKci + 1063
9 Candy Planet_1.5.7_171129_RELEASE 0x0044e565 _Z15malloc_internalmmRK10MemLabelId15AllocateOptionsPKci + 117
10 Candy Planet_1.5.7_171129_RELEASE 0x00c95683 _ZN16NovodexAllocator8allocateEmPKcS1_i + 67
11 Candy Planet_1.5.7_171129_RELEASE 0x01a17549 _ZN5physx6shdfnd10Foundation19AlignCheckAllocator8allocateEmPKcS4_i + 57
12 Candy Planet_1.5.7_171129_RELEASE 0x01a168cf _ZN5physx6shdfnd9Allocator8allocateEmPKci + 63
13 Candy Planet_1.5.7_171129_RELEASE 0x018a27ff _ZN5physx14PxsAABBManager18setDynamicAABBDataEjRKNS_18PxcAABBDataDynamicE + 1023
14 Candy Planet_1.5.7_171129_RELEASE 0x018837bf _ZN5physx2Sc8ShapeSim16onGeometryChangeEv + 495
15 Candy Planet_1.5.7_171129_RELEASE 0x01865808 _ZN5physx2Sc9RigidCore13onShapeChangeERNS0_9ShapeCoreENS_7PxFlagsINS0_21ShapeChangeNotifyFlag4EnumEjEENS4_INS_11PxShapeFlag4EnumEhEE + 56
16 Candy Planet_1.5.7_171129_RELEASE 0x0182206a _ZN5physx7NpShape11setGeometryERKNS_10PxGeometryE + 362
17 Candy Planet_1.5.7_171129_RELEASE 0x00c5b4e5 _ZN11BoxCollider12ScaleChangedEv + 133
18 Candy Planet_1.5.7_171129_RELEASE 0x00c836a9 _ZN14PhysicsManager14SyncTransformsEv + 1065
19 Candy Planet_1.5.7_171129_RELEASE 0x00c96ba0 _ZN13PhysicsModule18AutoSyncTransformsEv + 32
20 Candy Planet_1.5.7_171129_RELEASE 0x00e3328e _ZN14ParticleSystem14BeginUpdateAllEv + 670
21 Candy Planet_1.5.7_171129_RELEASE 0x00e33e32 _ZZN14ParticleSystem15InitializeClassEvEN52PreLateUpdateParticleSystemBeginUpdateAllRegistrator7ForwardEv + 34
22 Candy Planet_1.5.7_171129_RELEASE 0x009d0c8e _Z10PlayerLoopv + 974
23 Candy Planet_1.5.7_171129_RELEASE 0x0035f0e6 -[PlayerAppDelegate UpdatePlayer] + 454
24 Foundation 0x95e1e336 __NSFireTimer + 97
25 CoreFoundation 0x946c8b96 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 22
26 CoreFoundation 0x946c86ad __CFRunLoopDoTimer + 1213
27 CoreFoundation 0x946c814e __CFRunLoopDoTimers + 350
28 CoreFoundation 0x946bfb10 __CFRunLoopRun + 2192
29 CoreFoundation 0x946bf01a CFRunLoopRunSpecific + 506
30 CoreFoundation 0x946bee0b CFRunLoopRunInMode + 123
31 HIToolbox 0x93dbf396 RunCurrentEventLoopInMode + 268
32 HIToolbox 0x93dbf182 ReceiveNextEventCommon + 494
33 HIToolbox 0x93dbef7b _BlockUntilNextEventMatchingListInModeWithFilter + 83
34 AppKit 0x9257d2d9 _DPSNextEvent + 1227
35 AppKit 0x92ce2c0b -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1742
36 AppKit 0x92ce2535 -[NSApplication(NSEvent) nextEventMatchingMask:untilDate:inMode:dequeue:] + 132
37 AppKit 0x92571f7a -[NSApplication run] + 943
38 AppKit 0x9253efe2 NSApplicationMain + 1368
39 Candy Planet_1.5.7_171129_RELEASE 0x0035ea07 _Z10PlayerMainiPPKc + 1143
40 libdyld.dylib 0x9f7b3395 start + 1
Debug info from gdb:
=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
I don't know what cause this error. I checked every static references and null it when the gameobject is distroyed, remove listeners on OnDestroy(), et cetra... It doesn't happen on all devices. Only Mac Mini. And the allocation attempt is triggered by Unity's PhysicsManager.cpp
Can anyone give some advices?
It turns out that on Mac Mini(with internal GPU Intel HD Iris / HD Graphics 5000), setting Color Space to "Linear" causes the issue. I switched it back to "Gamma" space, and the problem no longer occurs.
I think Unity Dev should know this.
I'm sure there are memory profilers for Unity just like there are for everything else. Those are the easiest way but probably not free. You may also try looking to see if MonoDevelop has something useful for you and seeing if you can get it working on a Mac.
Assuming you don't want to or can't find/buy a memory profiler that works for unity on a Mac Mini, another option is to perform something akin to a binary search.
Duplicate your scene.
Verify that the problem is still there.
Remove half the stuff in it.
If the problem is still there, chop away another half of the stuff.
If the problem isn't there, re-duplicate and remove the complementary set of things.
Repeat as needed until you find the problem game object.
Repeat as needed until you find the offending script.
Of course, it's not as simple as a dumb binary search through a sorted list. There are dependencies to manage and some of those dependencies are separate on-disk artifacts (like a material or whatever).
The basic rule of just ruling out pieces of content is the safest, surest path, though. Doing so in as close to as binary a fashion as you can will speed things up a little.
Thanks for your advice! But the issue seems to be caused by hardware + Unity error.
