A little RAID experiment

[Stefan Ring]

> At least I have some multi-threaded results from the other two machines:
>
> LSI:
>
> 4 threads
>
> [   2s] reads: 0.00 MB/s writes: 63.08 MB/s fsyncs: 0.00/s response
> time: 0.452ms (95%)
> [   4s] reads: 0.00 MB/s writes: 34.26 MB/s fsyncs: 0.00/s response
> time: 1.660ms (95%)

And because of the bad formatting:
https://github.com/Ringdingcoder/sysbench/blob/master/mail2.txt