[Bf-cycles] Branched PT + Correlated Multi-Jitter & MIS on Background increase rendertimes tremendously!

[ertuqueque]

After more testing, the massive slowdown occurs on GPU render only...

Here's the scene:
https://drive.google.com/file/d/0B9-4MQo-2HDqRnQtYnlUTWI1Mzg/view?usp=sharing

And here are a couple of renders (upper left corner for rendertimes and
sampling pattern).
http://s5.postimg.org/ilrfwfs7r/Sobol.png
http://s5.postimg.org/p0qgt3yxj/CMJ.png

My system:

OS: Linux Ubuntu 14.10 - 64-bit
Processor: Intel Core 2 Quad CPU Q9550 @ 2.83GHz × 4
Graphics: Nvidia GeForce GTX 550 Ti
Blender: blender-2.73-7708012-linux-glibc211-x86_64

Thanks!
tuqueque.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.blender.org/pipermail/bf-cycles/attachments/20150226/d13d9711/attachment.htm