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> EC> That thread starts here:
> EC> http://lists.freebsd.org/pipermail/freebsd-arch/2010-April/010143.html
> Year 2010! And we still limited by MAXPHYS (128K) transfers :(
put
options         MAXPHYS=2097152
in your kernel config.

EVERYTHING works in all production machines for over a year


the only exception is my laptop with OCZ petrol SSD that hangs on any 
transfer >1MB, i've set it to 0.5MB here.