Redrawtimer PlayAnim cause a hang #76754

New Issue

Julian Mohr · 2020-05-14T17:19:54+02:00

Julian Mohr commented

2020-05-14 17:19:54 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87

Blender Version
Broken: version: 2.90 (sub 1), branch: master, commit date: 2020-05-13 13:19, hash: 3a1426afbd

Short description of error
Edge case ahead:
Redrawtimer Play Anim should run 10 times.
with or without an animation the result is the same on second run it hangs with nothing obvious wrong.
2020-05-12 23-08-14.mp4

I can cause it to hang:
10 out of 10 times when during the computation left mouse is clicked.(mostly on the second run also the mouse cursor dont need to be in blender)

Exact steps for others to reproduce the error
Based on default cube.
start Redraw Timer Play Anim and click left mouse

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 445.87 **Blender Version** Broken: version: 2.90 (sub 1), branch: master, commit date: 2020-05-13 13:19, hash: `3a1426afbd` **Short description of error** **Edge case ahead:** Redrawtimer Play Anim should run 10 times. with or without an animation the result is the same on second run it hangs with nothing obvious wrong. [2020-05-12 23-08-14.mp4](https://archive.blender.org/developer/F8535436/2020-05-12_23-08-14.mp4) I can cause it to hang: 10 out of 10 times when during the computation left mouse is clicked.(mostly on the second run also the mouse cursor dont need to be in blender) **Exact steps for others to reproduce the error** Based on default cube. start Redraw Timer Play Anim and click left mouse

Julian Mohr commented

2020-05-14 17:19:54 +02:00

Added subscriber: @Jewls

Julian Mohr commented

2020-05-14 17:22:29 +02:00

Had commented in #71569 wich was closed nov ´19 my bad.

Richard Antalik commented

2020-05-14 23:43:37 +02:00

Added subscriber: @iss

Richard Antalik commented

2020-05-14 23:43:37 +02:00

Can't reproduce on
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Radeon RX550/550 Series ATI Technologies Inc. 4.5.13586 Core Profile Context 19.12.2 26.20.15002.61

In task manager program is flagged as "not responding" though

@Jewls have you tried to wait for a minute?

Can't reproduce on Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: Radeon RX550/550 Series ATI Technologies Inc. 4.5.13586 Core Profile Context 19.12.2 26.20.15002.61 In task manager program is flagged as "not responding" though @Jewls have you tried to wait for a minute?

Julian Mohr commented

2020-05-15 11:56:57 +02:00

yes but its unsure to recover: 5 out of 10 times it wont recover.
and ill have to close it
Its really an edge case
maybe its only on my machine but for sure here are more infos:
system-info.txt

yes but its unsure to recover: 5 out of 10 times it wont recover. and ill have to close it Its really an **edge case** maybe its only on my machine but for sure here are more infos: [system-info.txt](https://archive.blender.org/developer/F8536845/system-info.txt)

Julian Mohr commented

2020-05-15 12:20:49 +02:00

Have tested also with 2.80 Series starting from 2.80 releases and all will play the animation even tough there is no animation.
It will stuck but not completly hang.
2020-05-15 12-05-27.mp4

Also had a weird experience with 2.79 where it overjumped the animation completely and finished under a second.
And other times it ran normally.

Im not getting clever out of this Issue

Have tested also with 2.80 Series starting from 2.80 releases and all will play the animation even tough there is no animation. It will stuck but not completly hang. [2020-05-15 12-05-27.mp4](https://archive.blender.org/developer/F8536856/2020-05-15_12-05-27.mp4) Also had a weird experience with 2.79 where it overjumped the animation completely and finished under a second. And other times it ran normally. Im not getting clever out of this Issue

Germano Cavalcante commented

2020-05-15 16:45:35 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-05-15 16:45:35 +02:00

I cannot reproduce the problem in debug mode which makes it quite difficult to investigate what is going on.

I managed to make the daily build hang for a few seconds.
It must be related to the fact that the program is flagged as "not responding".

This is an operator used for benchmark. Therefore, clicking or doing things while it is running can change the result.

I don't know if this operator is really being used for benchmark tests, I think it could be removed.
But the fact that blender is flagged as "not responding" might be worth investigating.

I cannot reproduce the problem in debug mode which makes it quite difficult to investigate what is going on. I managed to make the daily build hang for a few seconds. It must be related to the fact that the program is flagged as `"not responding"`. This is an operator used for benchmark. Therefore, clicking or doing things while it is running can change the result. I don't know if this operator is really being used for benchmark tests, I think it could be removed. But the fact that blender is flagged as `"not responding"` might be worth investigating.

Julian Mohr commented

2020-05-15 20:15:15 +02:00

@mano-wii I wanted to build an debug build for this issue but "Avira Anivirus" cancelled it and found allegedly an virus should it also been reported to you ?

Germano Cavalcante commented

2020-05-15 20:27:24 +02:00

In #76754#932604, @Jewls wrote:
@mano-wii I wanted to build an debug build for this issue but "Avira Anivirus" cancelled it and found allegedly an virus should it also been reported to you ?

If I'm not mistaken this is common.
User build and daily build are not signed.

And it is not suitable as a bug report as we don't take build errors as bug reports.

> In #76754#932604, @Jewls wrote: > @mano-wii I wanted to build an debug build for this issue but "Avira Anivirus" cancelled it and found allegedly an virus should it also been reported to you ? If I'm not mistaken this is common. User build and daily build are not signed. And it is not suitable as a bug report as we don't take build errors as bug reports.

Robert Guetzkow commented

2020-05-15 23:08:41 +02:00

Added subscriber: @rjg

Robert Guetzkow commented

2020-05-15 23:08:41 +02:00

@Jewls This is most likely a false positive. Depending on configuration some anti-virus software flags anything for quarantine that isn't whitelisted or doesn't have a known signature. A custom debug build would certainly fall into that category.

Julian Mohr commented

2020-05-15 23:32:42 +02:00

Thank you for your explonations @mano-wii and @rjg

Julian Mohr commented

2020-05-16 00:15:56 +02:00

have managed to build thedebug buildand the result is quite the same with one exception it will recover it self.
10 out of 10 game again and it will get stuck at the second run as soon mouse is clicked it becomes unresponsive but not as unresponsive marked in the task manager.
2020-05-16 00-07-10.mp4
any guesses or hints where to look at?

have managed to build the**debug build**and the result is quite the same with one exception it **will** recover it self. 10 out of 10 game again and it will get stuck at the second run as soon mouse is clicked it becomes unresponsive but not as unresponsive marked in the task manager. [2020-05-16 00-07-10.mp4](https://archive.blender.org/developer/F8537778/2020-05-16_00-07-10.mp4) any guesses or hints where to look at?

Julian Mohr commented

2020-05-16 02:54:15 +02:00

Some spectations while playing with this:

All information gathered on first run because it runs smooth

Eevee:
Solid mode time to finish a run avrage 10 secs
Render preview time avrage 4,5 secs

Cyles:
Solid mode 10 secs
Renderpreview cpu 4,7 secs
Render preview gpu 10 secs - no lag or hang - also tested with master because debug build will cancel the render but behavior is the same.

All Animations are the same simple cube and clearly capped to default 24 fps frame rate - default 250 frames long.
Suspicion: frame rate cap is overwriten with 60 fps or uncapped in preview modes. 250/ 60 = 4.16 secs

Some spectations while playing with this: All information gathered on first run because it runs smooth Eevee: Solid mode time to finish a run avrage **10** secs Render preview time avrage **4,5** secs Cyles: Solid mode **10** secs Renderpreview cpu **4,7** secs Render preview gpu **10** secs - no lag or hang - also tested with master because debug build will cancel the render but behavior is the same. All Animations are the same simple cube and clearly capped to default 24 fps frame rate - default 250 frames long. Suspicion: frame rate cap is overwriten with 60 fps or uncapped in preview modes. 250/ 60 = 4.16 secs

Philipp Oeser commented

2020-11-20 10:04:15 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-11-20 10:04:15 +01:00

Changed status from 'Needs Triage' to: 'Needs Developer To Reproduce'

Philipp Oeser commented

2020-11-20 10:04:15 +01:00

Hm, this has been in limbo for quite some time now.

I cannot reproduce it here

**System Information**
Operating system: Linux-5.8.18-300.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits
Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66
version: 2.92.0 Alpha, branch: master, commit date: 2020-11-18 22:29, hash: `rB9d6d5b9bebd1`, also tested 2.90.1

Will flag this as a Windows issue, and since the triaging force seems to have to obvious way to proceed here, will leave up to developers to decide what to do.

Hm, this has been in limbo for quite some time now. I cannot reproduce it here ``` **System Information** Operating system: Linux-5.8.18-300.fc33.x86_64-x86_64-with-fedora-33-Thirty_Three 64 Bits Graphics card: GeForce GTX 970M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 450.66 version: 2.92.0 Alpha, branch: master, commit date: 2020-11-18 22:29, hash: `rB9d6d5b9bebd1`, also tested 2.90.1 ``` Will flag this as a Windows issue, and since the triaging force seems to have to obvious way to proceed here, will leave up to developers to decide what to do.

Philipp Oeser removed the

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Redrawtimer PlayAnim cause a hang #76754