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Image scaling performance

From: Michael Zimmermann
Subject: Image scaling performance
Date: Tue, 24 Feb 2015 10:39:08 +0100

Any ideas what could slow down the image scaling algorithm?
The only reasons I could think of would either be slow memory or some
compiler problems. Since my Ram is mapped cachable I don't think the
RAM is too slow.

I even forces using the Nearest neighbor algorithm already. It speeds
things up a lot but it's not as fast as you'd expect.

Some technical info:
Linaro GCC 4.9
MMU setup is done by the previous bootloader(I disabled GRUB's (uboot)
MMU setup - it prooved to be faster)

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