Thanks for the pointer mir, I used fio and the results are not any better that's for sure.
test: (groupid=0, jobs=1): err= 0: pid=19544: Thu Nov 3 18:14:11 2016
read : io=3071.7MB, bw=10929KB/s, iops=2732, runt=287815msec
write: io=1024.4MB, bw=3644.5KB/s, iops=911, runt=287815msec
cpu...