Hello,
Recently I have found our dedicated server often randomly hangs for about 20 seconds. After some investigation, I think it could be something related to phyx. After using “stat dumphitches”, this is what I have got:
> [2020.09.23-19.03.54:624][939]LogStats: ------------------Thread Hitch 2, Frame 108939 3404.2ms ---------------
> [2020.09.23-19.03.54:624][939]LogStats: ------------------ Game Thread 3404.19ms
> [2020.09.23-19.03.54:624][939]LogStats: 3404.171ms ( 5) - Thread_a3c_0 - GameThread - STATGROUP_Threads -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3404.154ms ( 2) - FrameTime - STAT_FrameTime - STATGROUP_Engine -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3404.094ms ( 1) - GameEngine Tick - STAT_GameEngineTick - STATGROUP_Engine - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3404.074ms ( 1) - World Tick Time - STAT_WorldTickTime - STATGROUP_Game - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3391.590ms ( 6) - Tick Time - STAT_TickTime - STATGROUP_Game -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.674ms ( 2) - TG_StartPhysics - STAT_TG_StartPhysics - STATGROUP_TickGroups -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.670ms ( 2) - ReleaseTickGroup Block - STAT_ReleaseTickGroup_Block -
> STATGROUP_TickGroups -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.667ms ( 1) - Game TaskGraph Tasks - STAT_TaskGraph_GameTasks -
> STATGROUP_Threading - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.238ms ( 2) - FTickFunctionTask -
> STATGROUP_TaskGraphTasks -
> STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.236ms ( 1) - FStartPhysicsTickFunction_ExecuteTick
> - STATGROUP_Quick - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.094ms ( 1) - FetchAndStart Time (all) - STAT_TotalPhysicsTime -
> STATGROUP_Physics - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.094ms ( 1) - Start Physics Time - STAT_PhysicsKickOffDynamicsTime
> - STATGROUP_Physics - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3389.059ms ( 2) - PhysX Single Thread Task - STAT_PhysXSingleThread -
> STATGROUP_Physics - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3382.294ms ( 24) - PxsContext.contactManagerDiscreteUpdate
> - STATGROUP_PhysXTasks - STATCAT_Advanced
> [2020.09.23-19.03.54:624][939]LogStats: 3382.293ms ( 24) - Self
> [2020.09.23-19.03.54:624][939]LogStats: 0.001ms ( 2) - OtherChildren
Have anybody encountered similar issue before?
Thanks in advance.