I have an application that render image. When I run this app on PC and use htop to monitor CPU usage. I saw that 2 core were parallel used (because each core load about 30%). But when i run this app on iMX6 board and also use htop. I saw that 1 core load (100%) and the other (3%). I think it not good. Can anyone explain me the reason? Why does only one core work?