Amlogic kernel 4.11 vs 3.14 on S905
Memory perfomance comparison on Amlogic S905 (mainline kernel)


Kernel 3.14: 

	Processor: Unknown @ 1.54GHz (4 Cores), Motherboard: Amlogic, Memory: 2048MB, Disk: 16GB NCard + 32GB 00000, Graphics: OSD

	OS: Ubuntu 16.04, Kernel: 3.14.79-vegas95 (aarch64), Compiler: GCC 5.4.0 20160609 + Clang 3.8.0-2ubuntu4 + LLVM 3.8.0, File-System: ext4, Screen Resolution: 1280x1440

Kernel 4.11: 

	Processor: Unknown @ 1.54GHz (4 Cores), Motherboard: Tronsmart Vega S95 Meta, Memory: 2048MB, Disk: 16GB SD + 16GB NCard

	OS: Ubuntu 16.04, Kernel: 4.11.0-amlogics905x-g2a8c81c-dirty (aarch64), Compiler: GCC 5.4.0 20160609, File-System: ext4


RAMspeed SMP 3.5.0
Integer Add
MB/s > Higher Is Better
Kernel 3.14 . 3791.16 |===================================================
Kernel 4.11 . 4149.73 |========================================================


RAMspeed SMP 3.5.0
Integer Copy
MB/s > Higher Is Better
Kernel 3.14 . 4502.62 |=====================================================
Kernel 4.11 . 4715.15 |========================================================


RAMspeed SMP 3.5.0
Integer Scale
MB/s > Higher Is Better
Kernel 3.14 . 4477.70 |======================================================
Kernel 4.11 . 4661.49 |========================================================


RAMspeed SMP 3.5.0
Floating-Point Add
MB/s > Higher Is Better
Kernel 3.14 . 3790.77 |=====================================================
Kernel 4.11 . 4005.09 |========================================================


Stream 2013-01-17
Add
MB/s > Higher Is Better
Kernel 3.14 . 4052.10 |========================================================
Kernel 4.11 . 3619.95 |==================================================


Stream 2013-01-17
Copy
MB/s > Higher Is Better
Kernel 3.14 . 4133.92 |========================================================
Kernel 4.11 . 3945.70 |=====================================================


Stream 2013-01-17
Scale
MB/s > Higher Is Better
Kernel 3.14 . 4192.48 |========================================================
Kernel 4.11 . 4160.12 |========================================================


CacheBench
Read Cache
MB/s > Higher Is Better
Kernel 3.14 . 2160.05 |========================================================
Kernel 4.11 . 2161.48 |========================================================


CacheBench
Write Cache
MB/s > Higher Is Better
Kernel 3.14 . 3377.58 |========================================================
Kernel 4.11 . 3379.42 |========================================================