Memory leak: Play animation for world material with lot of muted node groups #101486

New Issue

Gaonirico · 2022-09-29T22:59:46+02:00

Gaonirico commented

2022-09-29 22:59:46 +02:00

System Information
Operating system: Linux-5.15.0-48-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: NVIDIA GeForce GT 1030/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 515.65.01

Blender Version
Broken: version: 3.4
Broken: version: 3.3
Broken: version: 2.93
Broken: version: 2.83
Broken: version: 2.80

This sample file does not open on version 2.93 and below (have to save uncompressed to be able to open it in 2.93 nd below)

Short description of error

Blender quit
Error: Not freed memory blocks: 18736245, total unfreed memory 5428.092384 MB

Steps to reproduce
Open file
Click play animation.
Wait.
memory leak.blend

**System Information** Operating system: Linux-5.15.0-48-generic-x86_64-with-glibc2.31 64 Bits Graphics card: NVIDIA GeForce GT 1030/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 515.65.01 **Blender Version** Broken: version: 3.4 Broken: version: 3.3 Broken: version: 2.93 Broken: version: 2.83 Broken: version: 2.80 This sample file does not open on version 2.93 and below (have to save uncompressed to be able to open it in 2.93 nd below) **Short description of error** ``` Blender quit Error: Not freed memory blocks: 18736245, total unfreed memory 5428.092384 MB ``` **Steps to reproduce** Open file Click play animation. Wait. [memory leak.blend](https://archive.blender.org/developer/F13593974/memory_leak.blend)

Gaonirico commented

2022-09-29 22:59:46 +02:00

Added subscriber: @gaonirico

Iliya Katushenock commented

2022-09-29 23:06:52 +02:00

Added subscriber: @mod_moder

Iliya Katushenock commented

2022-09-29 23:06:52 +02:00

Hi, thanks for report.
I can't reproduce RAM issues. Maybe your system is just using RAM as a replacement for video memory. As you can see, the load on the 3D core has increased for me. This happens because every frame you need to perform a bunch of operations. The bandwidth of RAM is much lower than that of video memory. I do not know if there is a real increase in memory costs, but I suspect that it is under heavy load.

![image.png](https://archive.blender.org/developer/F13593837/image.png) Hi, thanks for report. I can't reproduce RAM issues. Maybe your system is just using RAM as a replacement for video memory. As you can see, the load on the 3D core has increased for me. This happens because every frame you need to perform a bunch of operations. The bandwidth of RAM is much lower than that of video memory. I do not know if there is a real increase in memory costs, but I suspect that it is under heavy load.

Gaonirico commented

2022-09-29 23:41:26 +02:00

But it's strange, ram consumption never increases when all nodegroups are enabled. Consumption only starts to creep up when you disable/mute a group of nodes which doesn't make sense. Here I recorded my PC showing how this happens when playing the animation, first by muting the nodes (which makes the ram increase every few seconds) and then by enabling the nodes (which makes the ram consumption freeze). What I pointed out in the video is the ram usage that starts at 2.5 gigs and continues to increase beyond 4.7 gigs if you let the Blender animation play longer.

memory ram saturation video.mp4

But it's strange, ram consumption never increases when all nodegroups are enabled. Consumption only starts to creep up when you disable/mute a group of nodes which doesn't make sense. Here I recorded my PC showing how this happens when playing the animation, first by muting the nodes (which makes the ram increase every few seconds) and then by enabling the nodes (which makes the ram consumption freeze). What I pointed out in the video is the ram usage that starts at 2.5 gigs and continues to increase beyond 4.7 gigs if you let the Blender animation play longer. [memory ram saturation video.mp4](https://archive.blender.org/developer/F13593925/memory_ram_saturation_video.mp4)

Iliya Katushenock changed title from ~~ram memory saturation~~ to Memory leak: Play animation for world material with lot of muted node groups

2022-09-29 23:53:24 +02:00

Iliya Katushenock commented

2022-09-29 23:53:24 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Iliya Katushenock commented

2022-09-29 23:54:23 +02:00

Thanks, now I can reproduce the error.

Gaonirico commented

2022-09-30 00:07:02 +02:00

Thank you for taking the report. Incidentally, I was testing with previous versions of Blender and the problem also occurs in Blender 3.3, 3.2 and 3.1 (I don't have the other versions installed). Either way, hopefully it can be fixed. Thanks to all the people of Blender for the great work they do with the program.

Philipp Oeser commented

2022-09-30 09:42:49 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2022-09-30 09:42:49 +02:00

This sample file does not open on version 2.93

That is because the file is saved compressed (if you save it with the Compress option disabled it opens in 2.93 and below)

The leak can be observed all the way back to 2.80

> This sample file does not open on version 2.93 That is because the file is saved compressed (if you save it with the Compress option disabled it opens in 2.93 and below) The leak can be observed all the way back to 2.80

Markus Studer commented

2022-12-19 01:52:42 +01:00

Added subscriber: @m.studer

Markus Studer commented

2022-12-19 01:52:42 +01:00

I can also reproduce the error. After three hours of "deleting out" a project file i found out, how to reproduce:

Create a new file
Set shading mode to preview mode (i also activate Scnene lightnings)
Add a mix shader Node between BSDF and Output
Make it as a Group
Leave group
Mute The Node Group
Save .blend file
Goto terminal and open it again with "blender --open-last" (tested on ubuntu)

After the sahder is loaded, exit and the following message will appear:

Side note: You do not need to connect the group anywhere, just mute it, and the mem leak just happened.

markus@Host300:~$ blender --open-last
Read prefs: /home/markus/.config/blender/3.4/config/userpref.blend
Read blend: /home/markus/Desktop/untitled.blend
Saved session recovery to '/tmp/quit.blend'

Blender quit
Error: Not freed memory blocks: 88, total unfreed memory 0.031082 MB

Here is the file i created: leaking.blend

I can also reproduce the error. After three hours of "deleting out" a project file i found out, how to reproduce: - Create a new file - Set shading mode to preview mode (i also activate Scnene lightnings) - Add a mix shader Node between BSDF and Output - Make it as a Group - Leave group - Mute The Node Group - Save .blend file - Goto terminal and open it again with "blender --open-last" (tested on ubuntu) # After the sahder is loaded, exit and the following message will appear: Side note: You do not need to connect the group anywhere, just mute it, and the mem leak just happened. > markus@Host300:~$ blender --open-last > Read prefs: /home/markus/.config/blender/3.4/config/userpref.blend > Read blend: /home/markus/Desktop/untitled.blend > Saved session recovery to '/tmp/quit.blend' > > Blender quit > **Error: Not freed memory blocks: 88, total unfreed memory 0.031082 MB** Here is the file i created: [leaking.blend](https://archive.blender.org/developer/F14071218/leaking.blend)

Pavel Duong commented

2023-01-02 19:51:00 +01:00

Added subscriber: @vignette

Philipp Oeser removed the

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Memory leak: Play animation for world material with lot of muted node groups #101486

After the sahder is loaded, exit and the following message will appear: