The UE4Editor on Mac OS X when playing with landscapes has started to lock up on me. Adding a new section to the landscape and even navigating have become plagued with frequent lockups.
I’ve CPU profiled the editor with Instruments.app during various lockups and the consistent thing in all fo them is FDebug::EnsureFailed() taking all the time. Example:
Running Time Self Symbol Name
2025.0ms 95.9% 0.0 FEngineLoop::Tick()
2025.0ms 95.9% 0.0 UUnrealEdEngine::Tick(float, bool)
2025.0ms 95.9% 0.0 UEditorEngine::Tick(float, bool)
2025.0ms 95.9% 0.0 UWorld::Tick(ELevelTick, float)
2025.0ms 95.9% 0.0 UNavigationSystem::Tick(float)
2025.0ms 95.9% 0.0 UNavigationSystem::AddElementToNavOctree(FNavigationDirtyElement const&)
2025.0ms 95.9% 0.0 UNavigationSystem::AddComponentElementToNavOctree(UActorComponent*, FNavigationDirtyElement const&, FBox const&)
2005.0ms 94.9% 0.0 FDebug::EnsureFailed(char const*, char const*, int, wchar_t const*)
2005.0ms 94.9% 0.0 FGenericPlatformStackWalk::StackWalkAndDump(char*, unsigned long, int, void*)
2005.0ms 94.9% 0.0 FApplePlatformStackWalk::ProgramCounterToHumanReadableString(int, unsigned long long, char*, unsigned long, unsigned int, FGenericCrashContext*)
2000.0ms 94.7% 0.0 FApplePlatformStackWalk::ProgramCounterToSymbolInfo(unsigned long long, FProgramCounterSymbolInfo&)
1984.0ms 93.9% 0.0 <Unknown Address>
1984.0ms 93.9% 1984.0 __fork
6.0ms 0.2% 1.0 fork
4.0ms 0.1% 0.0 dladdr
3.0ms 0.1% 3.0 read
2.0ms 0.0% 0.0 __cxa_demangle
1.0ms 0.0% 1.0 __wait4
5.0ms 0.2% 0.0 dladdr
- Branch: UE 4.4.0-2237849 Binary
- OS X 10.9.4
- iMac 3.5 GHz quad core i7, 16 GB RAM
- NVIDIA GeForce GTX 780M 4 GB VRAM