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low time performance on Ubuntu 14

Hello everyone,

I have a very unusual issue with OpenCV 3.2 on my Ubuntu 14 machine. Time performance for image pre-processing functions such as CvtColor and remap is a way lower as compared to the Windows version. I'm building my application using cmake (in Release mode), OpenCV is compiled in Release as well... Any ideas what can be wrong?!

Many thanks in advance!

Best, Alexey