Time reduction of Noise Reduction

[Beep6581]

Originally reported on Google Code with ID 1971

I tried to further optimize Noise reduction, but I don't get more than a 5% speedup.
My experience from past optimizations is, that the reason could be the known AMD 4-way-associative
L1-cache problem. To test this thing, I would be glad, if every developer and tester
could make a test processing the same RAW with the same settings and post the timings
(average or median of 7 pictures) in this Issue. The results could help me to detect
whether it's an AMD 4-way-associative L1-cache problem or not. If it's an AMD 4-way...,
I know where to search and can try to solve it. If I can solve it, I can try further
opts....

Here's the RAW and the settings and to make it easier also a patch with timing-code.

RAW: http://www.i-weyrich.de/rt/DENOISE.NEF

Settings: Default ISO high, but Luminance set to zero in and Impulse Noise reduction
disabled

Patch: attached

Ingo

PS: Reine, you don't need to download the 50 MB RAW. You already have it :-)

Reported by heckflosse@i-weyrich.de on 2013-09-12 20:31:04

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• _Attachment: denoise_test.patch_

[Beep6581]

Johan, thanks a lot for your test!

Reported by heckflosse@i-weyrich.de on 2014-03-12 20:42:13

[Beep6581]

Committed to revision 0128a48ac35e

Reported by heckflosse@i-weyrich.de on 2014-03-14 12:58:12

• Status changed: FixedPendingConfirmation

[Beep6581]

Reported by heckflosse@i-weyrich.de on 2014-03-16 20:36:17

• Status changed: Fixed