NEON: Cortex A7 is 4 times slower than Cortex A8 ?

I'm seeing Cortex-A7 cycle-timing table here : http://hardwarebug.org/2014/05/15/cortex-a7-instruction-cycle-timings/ For example, VADD.F32 Dd, Dn, Dm takes 2 cycles VADD.F32 Qd, Qn, Qm takes 4 cycles...
NEON: Cortex A7 is 4 times slower than Cortex A8 ?

I'm seeing Cortex-A7 cycle-timing table here : http://hardwarebug.org/2014/05/15/cortex-a7-instruction-cycle-timings/ For example, VADD.F32 Dd, Dn, Dm takes 2 cycles VADD.F32 Qd, Qn, Qm takes 4 cycles...
Juno A57 Core Runs Slower Than A53 Core

Hi experts, Recently, I'm trying to evaluate the code execution time when using the A53 core and the A57 core. However, my result shows A53 core is much faster than the A57 core, which does not make...
Juno A57 Core Runs Slower Than A53 Core

Hi experts, Recently, I'm trying to evaluate the code execution time when using the A53 core and the A57 core. However, my result shows A53 core is much faster than the A57 core, which does not make...
PixMap Surface slower and slower, why?

Hi everyone. I am using Mali-400 GPU, on Allwinner A20, under linux. I am using egl pixmap surface. Rendering results correct, but every time when i calling glDraw with the same parameters, the runtime...