performance tests/comparisons on A20-Lime2

I/O throughput using Samsung SSD 840 EVO 120GB on Olimex A20-OLinuXino-Lime2 (cpufreq settings: ondemand/1008 MHz)

a20-lime2_debian_3.4.90_release_1.img:

root@a20-lime2 /data # iozone -a -g 2000m -s 2000m -i 0 -i 1 -r ...K

     KB  reclen   write rewrite    read    reread
1024000       4   43768   44307   171975   174550
1024000      32   43232   43592   158419   157417
1024000     512   42938   43425   153626   154983
1024000   16384   42893   43844   154888   156200

Bananian:

root@a20-lime2 /data # iozone -a -g 2000m -s 2000m -i 0 -i 1 -r ...K

     KB  reclen   write rewrite    read    reread
1024000       4   44838   45076   204687   206614
1024000      32   43844   44796   190840   192428
1024000     512   44148   44020   169103   167532
1024000   16384   44261   43550   173133   175084

root@a20-lime2 /data # grep sda1 /etc/mtab
/dev/sda1 /data ext4 rw,relatime,discard,stripe=384,data=ordered 0 0


Network throughput measured with iperf and some TCP tuning applied (compare with http://forum.lemaker.org/thread-7102-1-1.html for details)

Olimex image on A20-Lime: never exceeding 450 MBits/sec
Bananian on A20-Lime: 470-800 MBits/sec depending on direction
Bananian on Banana Pi: 670-870 MBits/sec depending on direction

Startup recorded via serial console:

a20-lime2_debian_3.4.90_release_1 booting: http://pastebin.com/QSvXiM1j
Bananian 14.09 booting on A20-LIME2: http://pastebin.com/xU9wHBPP

Obviously the Olimex image failed to let U-Boot read uEnv.txt.
Kernel version differs (3.4.104 vs. 3.4.90)
Kernel command line differs (Bananian adds "sunxi_g2d_mem_reserve=0 sunxi_ve_mem_reserve=0")
The kernel Olimex uses seems to origin from Cubietech and contains both emac/gmac stuff
Voltage difference regarding axp20_buck2: 1425mV vs. 1450mV
sunxi WatchDog Timer and I2S enabled in Olimex image