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Tag for Blender performance related tasks.

Recent Activity

Thu, Oct 22

Richard Antalik (ISS) merged T81871: "Child Of" Constraint corrupt animation process when switched off into T73199: Switched off modifier still recalculates if there is second one, that switched on.
Thu, Oct 22, 7:16 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Tue, Oct 20

Jeroen Bakker (jbakker) added inline comments to D9087: LatticeDeform: Performance.
Tue, Oct 20, 8:21 AM · BF Blender (2.91), Performance
Jeroen Bakker (jbakker) updated the diff for D9087: LatticeDeform: Performance.
  • Use float[3] array in test cases
Tue, Oct 20, 8:19 AM · BF Blender (2.91), Performance

Mon, Oct 19

Jeroen Bakker (jbakker) updated the diff for D9087: LatticeDeform: Performance.
  • Fixed Code review comments
Mon, Oct 19, 4:58 PM · BF Blender (2.91), Performance
Campbell Barton (campbellbarton) added inline comments to D9087: LatticeDeform: Performance.
Mon, Oct 19, 12:01 PM · BF Blender (2.91), Performance
Campbell Barton (campbellbarton) added inline comments to D9087: LatticeDeform: Performance.
Mon, Oct 19, 11:58 AM · BF Blender (2.91), Performance
Campbell Barton (campbellbarton) added inline comments to D9087: LatticeDeform: Performance.
Mon, Oct 19, 11:57 AM · BF Blender (2.91), Performance
Campbell Barton (campbellbarton) added a comment to D9087: LatticeDeform: Performance.

Generally looks fine, only minor things noted.

Mon, Oct 19, 11:55 AM · BF Blender (2.91), Performance

Fri, Oct 16

Brecht Van Lommel (brecht) moved T70016: Document performance profiling Blender from Backlog to Long-Term on the Platforms, Builds & Tests board.
Fri, Oct 16, 5:03 PM · Development Management, Documentation, Good First Issue, Performance, Platforms, Builds & Tests
Dalai Felinto (dfelinto) added a comment to T73701: Stereo render display significantly slows down rendering.

This seems to be fixed now in (the upcoming 2.91) since (4212b6528afb0) - image draw refactor. Closing it now, let me know if the issue is still around.

Fri, Oct 16, 11:13 AM · Performance, Rendering, Render & Cycles, BF Blender

Wed, Oct 14

Germano Cavalcante (mano-wii) updated the task description for T81705: Framerate issue when "Edit Linked Library" is expanded and a dense Grease Pencil object is selected.
Wed, Oct 14, 9:12 PM · Add-ons (Community), Performance
Germano Cavalcante (mano-wii) added a comment to T81705: Framerate issue when "Edit Linked Library" is expanded and a dense Grease Pencil object is selected.

This seems to be a problem in addon then, I'll edit the description to indicate this.

Wed, Oct 14, 9:11 PM · Add-ons (Community), Performance
Robin Bonhoure (Ziboo) added a comment to T81705: Framerate issue when "Edit Linked Library" is expanded and a dense Grease Pencil object is selected.

I didn't know it was an addon actually...
It only happens when the addon is activated (https://docs.blender.org/manual/en/dev/addons/object/edit_linked_library.html)

Wed, Oct 14, 8:32 PM · Add-ons (Community), Performance
Germano Cavalcante (mano-wii) added a comment to T81705: Framerate issue when "Edit Linked Library" is expanded and a dense Grease Pencil object is selected.
  • In the Sidebar: Collapse and Expand the "Edit Linked Library" to see the difference in frame rate
Wed, Oct 14, 8:26 PM · Add-ons (Community), Performance
Robin Bonhoure (Ziboo) added projects to T81705: Framerate issue when "Edit Linked Library" is expanded and a dense Grease Pencil object is selected: Grease Pencil, Performance.
Wed, Oct 14, 5:33 PM · Add-ons (Community), Performance

Fri, Oct 9

Jeroen Bakker (jbakker) abandoned D8262: [WIP] DependencyGraph: Combine multiple drivers in a single operation.
Fri, Oct 9, 5:14 PM · Dependency Graph, Performance

Fri, Oct 2

Jeroen Bakker (jbakker) added a reviewer for D9087: LatticeDeform: Performance: Modeling.
Fri, Oct 2, 9:20 AM · BF Blender (2.91), Performance

Mon, Sep 28

Richard Antalik (ISS) merged T80892: dynamic paint still calculating when completely disabled, bringing Blender to it's knees. into T73199: Switched off modifier still recalculates if there is second one, that switched on.
Mon, Sep 28, 10:17 AM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Sat, Sep 26

Angad Mishra (angad) closed T79789: Performance regression, macOS viewport FPS slower in 2.83 than on 2.82 as Resolved.
Sat, Sep 26, 11:48 AM · Performance, Platform: macOS, BF Blender
Angad Mishra (angad) added a comment to T79789: Performance regression, macOS viewport FPS slower in 2.83 than on 2.82.

Problem was with Viewport Anti-Aliasing. With it turned off performance is back to rock solid 60, with no perceivable difference in appearance.
Seems an unnecessary option to have enabled by default on Retina machines.

Sat, Sep 26, 11:47 AM · Performance, Platform: macOS, BF Blender

Thu, Sep 24

Sybren A. Stüvel (sybren) merged T80977: Inconsistent behavior with armature deformation of objects disabled by driver into T76257: Disabled objects still get evaluated if there is a driver on their hide_viewport property..
Thu, Sep 24, 4:24 PM · Performance, Dependency Graph, Animation & Rigging, BF Blender

Sep 21 2020

Campbell Barton (campbellbarton) moved T73199: Switched off modifier still recalculates if there is second one, that switched on from Backlog to Known Issues on the Modeling board.
Sep 21 2020, 1:42 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Sep 17 2020

Sam Van Hulle (sam_vh) added a comment to T77812: Displaying a large image impacts Image Editor and viewport modeling performance.

Thanks, great work @Jeroen Bakker (jbakker) !

Sep 17 2020, 10:08 AM · Performance, EEVEE & Viewport, BF Blender

Sep 16 2020

Bastien Montagne (mont29) moved T74730: Automated performance testing from Backlog to Long-Term on the Platforms, Builds & Tests board.
Sep 16 2020, 11:27 AM · Performance, Restricted Project, Platforms, Builds & Tests

Sep 11 2020

Jeroen Bakker (jbakker) closed T77812: Displaying a large image impacts Image Editor and viewport modeling performance as Resolved.

@Sam Van Hulle (sam_vh), This seems to be better in latest master, IMO good enough to close this issue.

Sep 11 2020, 4:37 PM · Performance, EEVEE & Viewport, BF Blender

Sep 7 2020

Sergey Sharybin (sergey) placed T68740: Mask modifier slow when one of its properties is animated/driven up for grabs.

@Demeter Dzadik (Mets), the idea you are suggesting is not impossible to be implemented, but it requires some deep changes in how the system is currently functions. It might also cause worse performance in "real" cases, because it will be more difficult to keep all CPU threads busy bu requiring to wait while tree of animation/drives is evaluated.

Sep 7 2020, 5:29 PM · Performance, BF Blender

Sep 4 2020

Jessica (jlawheed) added a comment to T76356: Very slow performance when copying rigid body physics.

V 2.83.5. Mac OS 10.15.6/3.2 GHz 16 core Intel Xeon W/128GB memory/AMD Radeon Pro 16GB

Sep 4 2020, 2:53 AM · Performance, Dependency Graph, Nodes & Physics, BF Blender

Sep 1 2020

Germano Cavalcante (mano-wii) added projects to T80232: Viewport response on Mac is lagging as compared to 2.80: Platform: macOS, Performance.

Thansk for the report,
Can you try the latest daily build too?
https://builder.blender.org/download/

Sep 1 2020, 6:24 PM · Performance, Platform: macOS, BF Blender

Aug 29 2020

Peter Fog (tintwotin) added a comment to T70529: Verify ffmpeg and other image and video libraries use optimal build flags.

Compiling FFmpeg with NVIDIA hardware accelerated settings: https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/index.html

Aug 29 2020, 4:57 PM · VFX & Video, Performance

Aug 27 2020

Peter Fog (tintwotin) added a comment to T70529: Verify ffmpeg and other image and video libraries use optimal build flags.

There is a new ffmpeg gui which includes options for all the new HDR 10 bit formats and Nvidia based hardware encoding here:
https://github.com/CineEncoder/cine-encoder
It may be useful to generate test files to detect what codecs currently aren't supported by by the Blender built-in ffmpeg and also compare render times with and without hardware acceleration, in order the check the necessary build flags are being set.
All the new hardware settings in ffmpeg explained: https://developer.nvidia.com/blog/nvidia-ffmpeg-transcoding-guide/#disqus_thread

Aug 27 2020, 11:44 PM · VFX & Video, Performance
Dalai Felinto (dfelinto) edited projects for D8092: Performance: Use GHash for key block lookup., added: BF Blender; removed BF Blender (2.90).
Aug 27 2020, 5:38 PM · BF Blender, Performance

Aug 20 2020

Peter Fog (tintwotin) added a comment to T70529: Verify ffmpeg and other image and video libraries use optimal build flags.

Currently, the VSE ffmpeg lib can't decode AV1. Ex: https://www.youtube.com/watch?v=PVGeM40dABA
Ffmpeg 4.2 includes a AV1 decoder: https://hub.packtpub.com/ffmpeg-4-2-releases-with-av1-decoding-support-through-libdav1d-decoding-of-hevc-444-content-and-more/
And an AV1 encoder: https://trac.ffmpeg.org/wiki/Encode/AV1

Aug 20 2020, 6:31 PM · VFX & Video, Performance
Angad Mishra (angad) added a comment to T79789: Performance regression, macOS viewport FPS slower in 2.83 than on 2.82.

Less than 45 FPS now on 2.83.5.

Aug 20 2020, 3:16 PM · Performance, Platform: macOS, BF Blender

Aug 19 2020

Sergey Sharybin (sergey) added a revision to T70529: Verify ffmpeg and other image and video libraries use optimal build flags: D8627: FFmpeg: Improve multi-threading settings.
Aug 19 2020, 4:30 PM · VFX & Video, Performance
Sergey Sharybin (sergey) added a parent task for T70529: Verify ffmpeg and other image and video libraries use optimal build flags: T78992: VSE 2.0: Performance.
Aug 19 2020, 11:06 AM · VFX & Video, Performance
Sergey Sharybin (sergey) updated the task description for T70529: Verify ffmpeg and other image and video libraries use optimal build flags.
Aug 19 2020, 11:05 AM · VFX & Video, Performance

Aug 18 2020

Germano Cavalcante (mano-wii) added projects to T79789: Performance regression, macOS viewport FPS slower in 2.83 than on 2.82: Platform: macOS, Performance.
Aug 18 2020, 3:26 PM · Performance, Platform: macOS, BF Blender

Aug 14 2020

Bastien Montagne (mont29) removed a project from T60695: Optimized per-datablock global undo: Datablocks and Libraries.
Aug 14 2020, 11:52 AM · BF Blender, Data, Assets & I/O, Performance

Aug 11 2020

Sybren A. Stüvel (sybren) moved T64262: Performance: EditMesh to Mesh on every modifier run from Backlog to Long Term on the Dependency Graph board.
Aug 11 2020, 4:34 PM · Performance, Dependency Graph, BF Blender
Sybren A. Stüvel (sybren) moved T76356: Very slow performance when copying rigid body physics from Backlog to Bugs on the Dependency Graph board.
Aug 11 2020, 4:30 PM · Performance, Dependency Graph, Nodes & Physics, BF Blender
Sybren A. Stüvel (sybren) moved T73199: Switched off modifier still recalculates if there is second one, that switched on from Backlog to Long Term on the Dependency Graph board.
Aug 11 2020, 4:29 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender
Sybren A. Stüvel (sybren) moved T76257: Disabled objects still get evaluated if there is a driver on their hide_viewport property. from Backlog to Long Term on the Dependency Graph board.
Aug 11 2020, 4:27 PM · Performance, Dependency Graph, Animation & Rigging, BF Blender
Philipp Oeser (lichtwerk) merged T79693: Switched off mirror modifier still recalculates, if targeted to empty. into T73199: Switched off modifier still recalculates if there is second one, that switched on.
Aug 11 2020, 11:56 AM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Aug 10 2020

Vyacheslav (hitrpr) added a comment to T73199: Switched off modifier still recalculates if there is second one, that switched on.

@Dalai Felinto (dfelinto) Got it! I thought this was exact the same issue, so I didn`t new report. But if U suggest so, I'll try.

Aug 10 2020, 6:11 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender
Dalai Felinto (dfelinto) added a comment to T73199: Switched off modifier still recalculates if there is second one, that switched on.

Hi @Vyacheslav (hitrpr) - this is already marked as known issue, so although more information can help, the report already has all the information a developer would need to look at it. In your case you can just report your issue as a new bug, and the triaging team can handle the investigation and eventually merge the tasks if it comes to that. Just please refer to this task when opening a new one.

Aug 10 2020, 1:02 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Aug 8 2020

Vyacheslav (hitrpr) added a comment to T73199: Switched off modifier still recalculates if there is second one, that switched on.

Here is another example. Even if you apply Subsurf, switched Mirror will be calculated on every move. You can test it with this file (if lags are not so noticable — increase subdiv)

Aug 8 2020, 6:29 PM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Aug 5 2020

Richard Antalik (ISS) merged T79518: Render result drawing performance in Image Editor is extremely poor compared to image texture drawing performance. into T77812: Displaying a large image impacts Image Editor and viewport modeling performance.
Aug 5 2020, 5:23 AM · Performance, EEVEE & Viewport, BF Blender

Jul 27 2020

Jeroen Bakker (jbakker) abandoned D6093: [WIP] DrawManager: Image/UV editor Drawing.

D8234: Use DrawManager for Image/UV Editor is more complete, so time to abandon this patch

Jul 27 2020, 4:07 PM · EEVEE & Viewport, Performance

Jul 22 2020

Richard Antalik (ISS) merged T79147: Boolean modifier recalculates even with mesh selection into T73199: Switched off modifier still recalculates if there is second one, that switched on.
Jul 22 2020, 4:39 AM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender

Jul 21 2020

Richard Antalik (ISS) merged T79047: Disabled Boolean Modifier still tasks system into T73199: Switched off modifier still recalculates if there is second one, that switched on.
Jul 21 2020, 5:01 AM · Modeling, Performance, Dependency Graph, Modifiers, BF Blender