BGE bullet physics constraint memory leak #38448

New Issue

Jean-Francois Gallant · 2014-02-02T17:05:12+01:00

2014-02-02 17:05:12 +01:00

System Information
Windows 7 64bit with Geforce 8800 GTX

Blender Version
Broken: Blender Windows 64bit 2.69.0 r60995

Short description of error
When "bge.constraints.createConstraint" is used and many constraint is created and deleted , memory raise very fast.
I run some simulation need to do this many time over the night. At beginning memory taken by blender is like 100mo ... but
after 8hours , memory taken by Blender is near to 5-6Gigs. If no constraint created, memory stay near to the same ( around 100mo ).
See the attached blend file

Exact steps for others to reproduce the error

Open the attached .blend file
Press P to run game engine to see what exactly happening
Look how memory raise ( task manager of windows )
Press Esc so end the game engine
In the script editor , at line 4 , change the code "timerEnd = 300" for "timerEnd = 3"
Press P to run game engine again
Look how memory raise ( task manager of windows )

**System Information** Windows 7 64bit with Geforce 8800 GTX **Blender Version** Broken: Blender Windows 64bit 2.69.0 r60995 **Short description of error** When "bge.constraints.createConstraint" is used and many constraint is created and deleted , memory raise very fast. I run some simulation need to do this many time over the night. At beginning memory taken by blender is like 100mo ... but after 8hours , memory taken by Blender is near to 5-6Gigs. If no constraint created, memory stay near to the same ( around 100mo ). See the attached blend file **Exact steps for others to reproduce the error** - Open the attached .blend file - Press P to run game engine to see what exactly happening - Look how memory raise ( task manager of windows ) - Press Esc so end the game engine - In the script editor , at line 4 , change the code "timerEnd = 300" for "timerEnd = 3" - Press P to run game engine again - Look how memory raise ( task manager of windows )

Jean-Francois Gallant commented

2014-02-02 17:05:12 +01:00

Changed status to: 'Open'

Jean-Francois Gallant commented

2014-02-02 17:05:12 +01:00

Added subscriber: @pyroevil

Jean-Francois Gallant commented

2014-02-02 17:06:32 +01:00

bge_memoryleak.blend

[bge_memoryleak.blend](https://archive.blender.org/developer/F75804/bge_memoryleak.blend)

Mitchell Stokes commented

2014-02-10 06:13:50 +01:00

Added subscriber: @Moguri

Mitchell Stokes commented

2014-02-10 06:13:50 +01:00

Could you try a build from http://builder.blender.org/download/? I'm not seeing a memory leak (either via Valgrind or anything significant via a system monitor). I remember fixing some constraint memory issues a little while back.

HyperV commented

2014-02-10 11:22:00 +01:00

(Migrated from localhost:3001)

Added subscriber: @HyperV

HyperV commented

2014-02-10 11:22:00 +01:00

(Migrated from localhost:3001)

The reason why it is causing a memory leak is because it doesn't process the loop.
If you set the timerEnd to 3 it creates an infinite loop.that is the reason why the memory is raising and it doesn't free the memory.

It needs more time to process the loop and should free the memory.

i have uploaded the same file with some features to see the the process.bge_memoryleak.blend.

HyperV

The reason why it is causing a memory leak is because it doesn't process the loop. If you set the timerEnd to 3 it creates an infinite loop.that is the reason why the memory is raising and it doesn't free the memory. It needs more time to process the loop and should free the memory. i have uploaded the same file with some features to see the the process.[bge_memoryleak.blend](https://archive.blender.org/developer/F76695/bge_memoryleak.blend). HyperV

Jean-Francois Gallant commented

2014-02-11 01:24:49 +01:00

moguri: I download the latest build and I try it.

HyperV: Not sure I understand. Blender need time in the loop to free memory? Put timerEnd to 3 is probably excessive but it's just to show faster how memory increase. At 300 it's work too but just take more time. timerEnd at 30 raise memory to approximatly 1Mo per 10sec. In my realcase scenario , I have many objects with many constraints , but remove it to every 300,500 or even 1000 tics , it's still increase. I lunch a sims during the weekend and when I coime back today I see memory going from 80Mo to 30Go. Here is what I simulate exactly: https://www.youtube.com/watch?v=mJaI2bnaq9Q

moguri: I download the latest build and I try it. HyperV: Not sure I understand. Blender need time in the loop to free memory? Put timerEnd to 3 is probably excessive but it's just to show faster how memory increase. At 300 it's work too but just take more time. timerEnd at 30 raise memory to approximatly 1Mo per 10sec. In my realcase scenario , I have many objects with many constraints , but remove it to every 300,500 or even 1000 tics , it's still increase. I lunch a sims during the weekend and when I coime back today I see memory going from 80Mo to 30Go. Here is what I simulate exactly: https://www.youtube.com/watch?v=mJaI2bnaq9Q

Jean-Francois Gallant commented

2014-02-11 01:52:48 +01:00

Not working with build with hash a84bcea 2014-02-09 17h03

One detail I ommit in th main description is: If I left the gaming running for a amount of time (starting to 80Mo of ram for example) , until reaching 2Go of ram ( or any other number , this don't matter ) for example and I press ESC to exit the "game" and come back to Blender , the memory stay high. Never come back to "normal". If I start the game engine engine again , it's just continue to increase. I already left it running until I go over the memory of my computer and starting to be really slow.

Adding a loop in the second loop to make it more slow not working too.

EDIT: If I remove the 3 lines where I add the constraint and remove it ( so , not create any constraint ) , the memory stay really stable. The problem seam really to be with the constraints.

Not working with build with hash a84bcea 2014-02-09 17h03 One detail I ommit in th main description is: If I left the gaming running for a amount of time (starting to 80Mo of ram for example) , until reaching 2Go of ram ( or any other number , this don't matter ) for example and I press ESC to exit the "game" and come back to Blender , the memory stay high. Never come back to "normal". If I start the game engine engine again , it's just continue to increase. I already left it running until I go over the memory of my computer and starting to be really slow. Adding a loop in the second loop to make it more slow not working too. EDIT: If I remove the 3 lines where I add the constraint and remove it ( so , not create any constraint ) , the memory stay really stable. The problem seam really to be with the constraints.

HyperV commented

2014-02-13 10:49:47 +01:00

(Migrated from localhost:3001)

i did some research about the memory leak i found that if you change the cnsType to 10 it stays stable and change it to 11 or 12 the memory is raising up and at 13 it stays stable.

HyperV

i did some research about the memory leak i found that if you change the cnsType to 10 it stays stable and change it to 11 or 12 the memory is raising up and at 13 it stays stable. HyperV

Jean-Francois Gallant commented

2014-02-13 15:34:51 +01:00

when cnsType 12 is changed for 10 , 11 or 13 , no constraints is created for the file bge_memoryleak.blend
If I try it on my quadruped or biped blend file project , Blender just close ( crash ).

from: http://www.tutorialsforblender3d.com/BGE_Python/Physics_Constraints/6DOF/6DOF_createConstraint.html

0 = No Constraint
1 = Point to Point Constraint
2 = Line Hinge Constraint
11 = Vehicle Constraint
12 = 6DOF Constraint (6 Degrees Of Freedom)

when cnsType 12 is changed for 10 , 11 or 13 , no constraints is created for the file bge_memoryleak.blend If I try it on my quadruped or biped blend file project , Blender just close ( crash ). from: http://www.tutorialsforblender3d.com/BGE_Python/Physics_Constraints/6DOF/6DOF_createConstraint.html 0 = No Constraint 1 = Point to Point Constraint 2 = Line Hinge Constraint 11 = Vehicle Constraint 12 = 6DOF Constraint (6 Degrees Of Freedom)

Inês Almeida commented

2014-07-21 22:01:41 +02:00

Added subscriber: @brita

Jacob Merrill commented

2015-05-23 02:59:33 +02:00

Added subscriber: @JacobMerrill-1

Jacob Merrill commented

2015-05-23 02:59:33 +02:00

cycling add rigid body joint remove rigid body used to crash randomly, but that was in a very complex file, I will try again on 2.74 in my more predictable newer game files.

Jorge Bernal commented

2015-06-07 02:50:48 +02:00

Added subscriber: @JorgeBernalMartinez

Jorge Bernal commented

2015-06-07 02:50:48 +02:00

I can not reproduce the memory leak (opensuse linux 64bits). @pyroevil could you check it again with current master as createConstraint has been improved during blender 2.73-2.74?

Jean-Francois Gallant commented

2015-06-16 20:20:05 +02:00

memory still raising on my side with Blender version 2.74 Date: 2015-03-31 13:39 Windows 64bit

Put "timerEnd" variable at a value of 3 to see it increase faster ( in the internal python script named "script" )

memory still raising on my side with Blender version 2.74 Date: 2015-03-31 13:39 Windows 64bit Put "timerEnd" variable at a value of 3 to see it increase faster ( in the internal python script named "script" )

Porteries Tristan commented

2015-07-27 12:03:23 +02:00

Added subscriber: @panzergame