Linux copperhead 4.12.13-1-ARCH #1 SMP PREEMPT Fri Sep 15 06:36:43 UTC 2017 x86_64 GNU/Linux
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile
OpenGL core profile version string: 3.3 (Core Profile) Mesa 17.2.0
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 17.2.0
OpenGL shading language version string: 1.30
Broken: 2.79 8ef39d5c882
See attached system-info.txt:
Short description of error
Using an array modifier to create ~70 instances of a 12k triangle model results in an enormous delay
before rendering. Blender appears to be "Preparing scene data" but tile rendering still hasn't started
after about ten minutes of waiting.
I use array modifiers heavily in all of my projects and haven't seen any problem like this prior to today, and I very recently upgraded to 2.79, so I suspect an issue may have been introduced there.
Exact steps for others to reproduce the error
Please see "array_append.blend" in the repository at https://github.com/io7m/blender-perf-20170918
Just click render.