MPT inefficency (was: raw/block device disc troughput)

[Edgar Fuß]

> The protocol used to communicate between the CPU and the adapter is 
> inefficient.  Not well designed.  They redesigned it for SAS2.
Unfortunately, when I ordered these servers, NetBSD was lacking SAS 2008
support. Now that's been even pulled-up to 6.0_BETA, I could try a SAS2
controller.